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The .38 SWC

By: Glen E. Fryxell

     The .38 Special is the most reloaded handgun cartridge in the United States. The semi-wadcutter (SWC) bullet is the most versatile and popular handgun bullet design. It logically follows that we shoot a lot of .38 SWC in this great land of ours. Ah, but "Familiarity breeds contempt"! We don't tend to think about this load much because the .38 Special and the SWC have been around longer than most any of us have, and we just plain take them for granted. Well, let's stop for a second and take a closer look at what we have. What is the history of this valuable combination? Which design features appeared when and who designed them? And perhaps more importantly, are all .38 SWC's pretty much the same, or are there some that are superior to others? Let's take a closer look at this old friend...

     The first bullet that modern shooters would recognize as a SWC was the 150 grain Ideal 360271, which was designed by B. F. Wilder just after 1900. This bullet had a reputation for accuracy and for cutting clean, full-caliber holes in targets, and was recommended by the United States Revolver Association for target work. A few years later, J. B. Crabtree designed the 358345, a 115 grain wadcutting bullet for the .38 S&W Special cartridge. It too was widely regarded as an accurate short-range target bullet. Neither of these bullets had a crimp groove, and each two lube grooves. Both were intended to be seated deeply, and if a crimp was deemed necessary, the case could be crimped lightly over the forward driving band.

Early semi-wadcutters: The 150 grain Ideal 360271 (left) and 115 grain Ideal 358345 (right)

     The first bullet that we might call a SWC that had a separate beveled groove specifically for crimping the case mouth into was the 311316, the GC-SWC for high-velocity loads in the .32-20 rifle. In this case, the crimp groove is probably the result of this bullet being designed for rifle use and the need for crimped bullets in tubular magazines. This bullet also came out shortly after 1906 with the introduction of the GC. All of the other pistol bullets of this era that vaguely resemble SWC's have no provision for crimping, other than the forward driving band's shoulder. This was to change.

     In 1928, Elmer Keith commissioned Lyman to make moulds for revolver bullets that he had designed. The third in this series of Keith's moulds was the 358429, a 173 grain bullet that he put together specifically for heavy loads in S&W N-frame revolvers (so-called ".38/44 loads"). This was the first .38 SWC that incorporated a beveled crimping groove (he took his inspiration from the round-nosed 358311), and a large capacity "square-cut" lube groove.

The Ideal 311316, the first SWC suitable for handguns to have a beveled crimp groove.

     Originally his .38/44 loads consisted of this long bullet seated over 12.0 grains of DuPont #80 powder for over 1100 fps. Later, in 1933, when 2400 was introduced, he switched to using this powder and increasing the velocity of these loads to 1200+ fps. Interestingly, as near as I can tell the first use of the term "semi-wadcutter" didn't come about until the early 1950s, and came into fashion with such target bullets as the Lyman 452460. Today however, the term is most closely associated with the bullets of Elmer Keith (and those inspired by the Keith design features), even though the term was not originally applied to his bullets upon their introduction.

     Keith made the 358429 to be the same length as his .44 SWC (which he designed first). The weight on his .38/44 bullet came out to 173 grains. In later years, Keith would admit that a lighter bullet (150-160 grains) was better suited for use in the .38 Special, but he remained steadfastly faithful to his 173 grain bullet for the .357 Magnum.

The Keith SWC, loaded in .38 Special (.38/44 loads)

     In my experience, this bullet needs to be pushed hard for best accuracy, which is not surprising since, after all, EK designed it specifically to be pushed hard. Should one desire to re-visit Keith's .38/44 Heavy Duty loads, this bullet can be loaded over 12.0 grains of 2400 in a .38 Special case for approximately 1200 fps (this load should only be fired in N-frame .38s, or .357 Magnum revolvers). The most accurate .357 Magnum load I've fired using this bullet is powered by 14.5 grains of 4227 for about 1250 fps.

     The 1930s were a fertile time in terms of .38 bullet design; catalyzed by the .38/44 loads of Elmer Keith, and later by the introduction of the .357 Magnum in 1935. However, the nose on the 358429 was too long to be seated and crimped in the crimp groove when loaded into .357 Magnum cases -- it stuck out in front of the S&W .357 Magnum's cylinder and prevented rotation. Phil Sharpe sat down with George Hensley (this was shortly before George teamed up with James Gibbs) and took Keith's design and shrunk it to 5/6 its size. Thus was born the Hensley's #51; this was the original .357 Magnum bullet. Loaded on top of 14.0 grains of 2400, the H&G #51 tops off a superb .357 Magnum load.

The 160 grain Hensley # 51 ("Sharpe solid"), the original .357 Magnum bullet.

     Now it's not that Hensley didn't have similar bullets available that could have been loaded into these cartridges, it's just that they didn't have the full compliment of features that Keith and Sharpe wanted in their bullets. For example, there's Hensley's design #48, another 158 grain .38 SWC. But this one did not have a beveled crimp groove and the lube grooves were notably smaller (and remember what a reputation the .357 Magnum had for leading in the early days, more lube was definitely viewed as an important feature!).

     The level of performance that the roaring new Magnum provided had lots of makers supplying moulds for similar bullets.

The H&G # 48 158 grain SWC (no beveled crimping groove)

     For example, in the late 1930s Cramer cataloged their #12 and #26 designs. Both of these bullets are similar to H&G #51, differing primarily in the location of their lube grooves. The nose on 156 grain Cramer #12 is midway in length between the Keith 358429 and the H&G #51 (#12 is similar to the SAECO #382 that would come along later, and since SAECO bought out Cramer in 1951 this is a likely pedigree for this design). The 153 grain Cramer #26 has a similar length nose to the H&G #51 In fact, the Cramer #26 is basically identical to the original Lyman 358477 (which would come later, in the 1950s), with a fatter base band.

     Ideal was not just sitting on their hands while these other companies were bringing out their new .38 SWC's. The first bullet that Lyman designed explicitly for the .357 Magnum is the Ideal 357443, perhaps the most enigmatic member of the .38 SWC family.

Photo of the Cramer # 26 (two bullets on left), Cramer # 12 (mould, center) and the H&G #51 (two bullets on right) for comparison.

     Designed for both the .38 Special and the .357 Magnum, it was listed as early as Ideal Handbook #32 (1936), but interestingly not in the regular line of moulds, but rather farther back in the specialty mould listing.

     This unique 160 grain bullet has 3 grease grooves and a miniscule crimp groove in the middle of the front driving band. I suspect that it was most commonly crimped using the top grease groove, only filling the bottom 2 grease grooves with lube, as that dinky crimp groove is virtually useless. The 357443 stayed in the shadows for its entire production life, being quietly dropped from the catalog in the 1960s.

     Starting in Ideal Handbook #33 (published in 1939), Lyman touted the 160 grain plain-based 357446 as  "the standard bullet for the Magnum", and continued to promote it as such for many years. This bullet is similar to the H&G #48, except that the forward lube groove had been converted to a beveled crimp groove. It also represents a natural evolution of the homely 357443 -- the upper grease groove converted to a beveled crimp groove, the miniscule crimp groove eliminated, the meplat/ogive filled out,

The Lyman/Ideal 357443 (note the unusual crimping groove in the forward driving band).

  the base band fattened up slightly, with a bullet nose short enough to function in the S&W .357 Magnum. While the 357443 wallowed in obscurity, the handsome 357446 was a well-received and popular bullet for the .357 Magnum. It served equally well in the .38 Special. In the late 1930s, between the H&G, Cramer and Ideal designs, the shape, weight and function of the preferred form of the .38 SWC was coming into focus.

     The GC was introduced for various rifle calibers in 1906 by John Barlow (the head honcho of Ideal). Pistol shooters had noticed the advantages of the GC for high velocity .32-20 and .44-40 revolver loads, so it's no surprise that when the spectacular velocities of the .357 Magnum were reported (1500-1600 fps), shooters naturally started to think about adding a GC to bullets for the magnum.

"The Standard Bullet for the .357 Magnum" for many years, the Lyman/Ideal 358446.

     As near as I can tell, the first GC .38 SWC's were the Cramer #13 and #14 (cataloged in 1939). These bullets are very similar to the more familiar 358156 GC-SWC that we have today. The two Cramer bullets were designed by Ross Sernow of Los Angeles, and had 2 crimping grooves so they could be loaded and crimped to .357 Magnum OAL in .38 Special cases (.357 Magnum brass was hard to come by in those days so shooters would load up .357 Magnum loads with .38 brass and seat these bullets long and crimp in the bottom crimp groove). The #13 was a 158 grain bullet that was "specially  adapted to hunting" (although it was not explicitly referred to as a hollow point in the catalog), and the #14 was listed as a 169 grain "solid point version of #13" (alloy unspecified).

     After WW II, Ray Thompson designed a series of GC-SWC's for Lyman in the early 1950s. The 160 grain gas-checked Lyman/Ideal 358156 was specifically designed for the .357 Magnum and was similar to the Cramer designs just discussed, right down to the dual crimping groove concept. The Thompson 358156 was also quite reminiscent of the old 358446, ("the standard bullet for the Magnum") with the addition of a GC and a second crimping groove. The 358156 has spent the last 50 years as what is likely the most popular cast bullet for the .357 Magnum, and I see no reason for that to change any time soon. It is a superbly accurate bullet. My favorite load for this bullet in the .357 Magnum is 14.0 grains of 2400 for about 1350 fps (or 1750 fps from a lever-gun). Every .357 Magnum that I have owned has shot this load very well.

     The mid-1950s were another fertile period for the .38 SWC with the introduction of the K-framed S&W Combat Magnum and the Ruger .357 Blackhawk. Velocity was the selling feature of the cartridge and Lyman chose to capitalize on that feature, while simultaneously capturing those features that Keith and Sharpe had espoused in their designs, with the 150 grain 358477 (cataloged in 1957).

     With this bullet it was easy to achieve 1500+ fps from the .357 Magnum and 1000 fps from a .38 Special, and do both with superb accuracy and no leading.

     For my money, the original 150 grain 358477 is the finest .38 Special bullet ever designed. Loaded over 5.4 grains of Unique, it generates 982 fps from a 6" K-38 Masterpiece with exceptional accuracy.

     Gordon Boser was an active handloader and wildcatter of the 1930s, '40s and '50s. He also designed some very interesting bullets. Basically, the Boser SWC's (Lyman/Ideal 357453, 401452, and 429360) were similar to the Keith SWC's, except that they had rounded grease grooves, the forward driving band was smaller than the back two driving bands, and the ogive was straight instead of radiused. It's not uncommon to hear the uninitiated refer to these Boser bullets as "Keith SWC's" but to do so is to ignore the contributions of both men. The Boser .38 SWC (Lyman/Ideal 358453) weighs about 150 grains. The straight ogive SWC was resurrected by Lee in the 1970s.

A portion of the Cramer catalog (circa 1939); of particular interest are the GC-SWC's #13 and #14 (scan taken from the excellent reference resource "Castpics Research and Development"

     Jim Harvey brought an interesting twist to the .38 SWC concept in the mid 1950s with this "Harvey Pro-Tex Bore" line of bullets. These bullets were designed without lube or crimp grooves and were cast through the hole in a zinc washer, permanently imbedding the washer into the bullet.

     Not having to size and lube these bullets was a selling feature. The hard zinc washer allowed soft lead alloys to be used to promote expansion. Extravagant claims were made about "the solid lubricating ability of zinc", and how this lead to unprecedented velocities, etc. Some pretty eye-popping velocities were reported, but top accuracy was generally limited to moderate velocity loads.

The Lyman 358156 GC-SWC; probably the most popular cast bullet ever for the .357 Magnum

     Lachmiller was an active player in the bullet mould field in the 1950s, and like most other mould makers they had a 158 grain SWC for the .38 Special and .357 Magnum.

     This bullet, perhaps best of all the moulds discussed here, captures the design features that Keith and Sharpe promoted -- 3 full-size driving bands, a full-size flat-bottomed grease groove, a beveled crimp groove and a functional ogive/meplat that would work in all guns.

     This is an excellent bullet and one of my personal favorites. Lachmiller was bought out by RCBS in the late 1970s.

The 150 grain Lyman 358477 SWC; a fine bullet for both .38 Special and .357 Magnum.

     Ohaus started making bullet moulds in 1972 and later that decade RCBS bought them out and took over mould production. These moulds are well thought-out derivatives of proven designs. In terms of .38 SWC's, RCBS makes 2 particularly well designed moulds, the 150 PB SWC and the 158 grain GC-SWC.

Gordon Boser's SWC design.

     The GC 158 is very similar to the 358156 (having a somewhat larger grease groove and lacking the second crimp groove), and like the .358156, is a superb all-round .357 Magnum bullet.

     Lee started making bullet moulds in 1973, and not surprisingly, they also included various .38 SWC's in their line. The first bullet mould I bought, when I started casting, was a 6-cavity Lee .38 150 SWC. I used that mould to make a lot of bullets. Lee not only offers PB and GC designs, but also came out with their novel tumble-lube (TL) designs. Their affordable 6 cavity moulds allow a budding young caster on a limited budget to make a pile of bullets in a hurry, but in general, their lube grooves are too shallow for my taste.

The Lyman 357500 Harvey Pro-Tex Bore SWC mould (the slot at the base of the bullet is where the zinc washer fits into the mould prior to pouring the molten alloy into the cavity; the conical rivet below that is what holds the washer in place).

     In the late 1980s, a new handgun game had come to national prominence and Lyman brought out its 215 grain GC-SWC (#358627) to address the silhouette market. This bullet is basically the Keith SWC with a GC shank added onto the base and an extra crimp groove added up front. While this husky bullet shoots fine in both the .38 Special (800 fps) and the .357 Magnum (1100 fps), it was really designed for the .357 Maximum. 1400+ fps is no problem with this heavyweight from a .357 Maximum, making this the hardest hitting member of the .38 SWC clan.

     Bevel bases are popular in cast bullets designed for commercial production. This is due to the fact that the BB bullet releases more readily from the casting machine moulds used by these outfits, and therefore production rates are higher when using BB moulds (there's no significant difference for the home caster).

Lachmiller 3-cavity 358 158 SWC mould.

     In addition, the commercial caster wants to provide a product that is going to generate the fewest number of complaints, and well to be honest, there are some handloaders who are a little rough during load assembly, and if the BB bullet slips into the case more easily and with less damage, then those customers aren't going to whine as much.

     However, in some guns, BB bullets can lead to increased leading in the forcing cone area, as the throat/bullet seal is broken while there is lots of exposed lead in the cylinder gap (this problem is most commonly encountered in guns with a large cylinder gap). The bottom line is that, as far as the shooter is concerned, beveled bases on cast bullets are

The RCBS 150 SWC, an excellent bullet for both .38 Special and .357 Magnum.

  kinda like earrings on professional football players, some folks may think they're fashionable, but they provide nothing in terms of actual performance.

Lyman 358627 SWC loaded in .357 Maximum.

     There have been a number of other designs with long noses (e.g. the H&G #73), small meplats, or minor variations on these designs. In an effort to sharpen the focus of this discussion, I will draw the line here.

     The design elements espoused by Keith and Sharpe (full diameter forward driving band, beveled crimp groove, large grease groove, moderately large meplat and radiused ogive) are just as valuable today as they were back in the 1930s. Which of these bullets best capture these features in a form most usable in the .38 Special and .357 Magnum cartridges? That is a question of weight, bearing surface, balance and nose length. All of these bullets have given me fine accuracy when launched from properly assembled, well-balanced loads. OK, so which of these .38 SWC's provide the best combination of velocity and accuracy from the .38 Special and the .357 Magnum? For somebody who is just starting out and may not have the connections to find moulds that were made 50+ years ago, what is currently available and what would be their best choice? Having fired many, many thousands of these bullets, my votes fall thusly:

Best SWC for the .38 Special

     Putting a GC on .38 Special bullet is kinda like putting a frilly lace dress on John Wayne -- it just doesn't belong there! As mentioned above, my personal favorite bullet for the .38 Special is the original 150 grain version of the Lyman 358477. Any number of good loads will generate 950 fps with this bullet, and do so quite accurately, but my favorite is 5.4 grains of Unique. As far as what is available today, the RCBS 38 150 SWC (they call it a "Keith" but it's doubtful that Elmer actually designed it) is an excellent mould and gets my vote for the best bullet currently available for the .38 Special. The lighter weight of these two bullets allows the sixgunner to get optimum performance out of a .38 Special revolver.

Best SWC for the .357 Magnum

     The higher pressures and higher velocities of the .357 Magnum make a GC much more at home in this cartridge. While GC are by no means required for this level of ballistic performance, they can make a contribution and fit in nicely here. The Lyman 358156 is probably the most popular cast bullet of all time for the .357 Magnum, and is certainly one of my own personal favorites. The very similar RCBS 38 158 GC-SWC serves with equal distinction, it just doesn't have as long, or as colorful, a history behind it. Both of these bullets are currently available for the new caster just starting out. I also shoot a number of plain-based cast bullets in my .357s, my favorites being the H&G #51 (H&G moulds are currently available through Ballisti-Cast), the Lachmiller and Cramer SWC's; excellent .357 bullets all. For all of these bullets, my preferred powder charge is 14.0 grains of 2400.

Best .38 SWC All-round

     As an all-round cast bullet for both .38 Special and .357 Magnum, my own personal choice would be for a plain-based bullet of 158-160 grains, with the driving bands as close to one another in size as possible, with a flat-bottomed grease groove, and a beveled crimp groove. These features are captured in the 160 grain H&G #51, the Lachmiller 38 158 SWC, and the Cramer #12.

Best All-round. the H&G # 51, the Lachmiller 38-158 SWC, and the Cramer # 12.

 SAECO # 382 150 Grain PB.

 All of these bullets perform beautifully in both the .38 Special and the .357 Magnum. Currently available moulds in this class are the H&G #51, which is available through Ballisti-Cast, and the SAECO #382 (which, as discussed

  earlier, can trace its heritage to the Cramer line). All of these bullets are versatile, accurate and deadly.

     The .38 SWC was born at the dawn of the 20th century. Elmer Keith took some of the ideas captured in some of the early target bullets and incorporated a beveled crimping groove and a larger, "square-cut" grease groove.

     Phil Sharpe shortened Keith's design to make it function in the original N-frame .357 Magnum. Others, like Ray Thompson and Gordon Boser, added their touch to this basic design, massaging it slightly for each successive generation of .38 shooters. As a result of these men's efforts, the .38 SWC is a refined, versatile and highly useful bullet design. If the value of a bullet can be judged based upon the gross tonnage of that bullet design sent downrange each year, then the .38 SWC is clearly one of the most valuable handgun bullets of all time!

- Glen E. Fryxell

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Warning: All technical data mentioned, especially handloading and bullet casting, reflect the limited experience of individuals using specific tools, products, equipment and components under specific conditions and circumstances not necessarily reported in the article or on this web site and over which The Los Angeles Silhouette Club (LASC), this web site or the author has no control. The above has no control over the condition of your firearms or your methods, components, tools, techniques or circumstances and disclaims all and any responsibility for any person using any data mentioned. Always consult recognized reloading manuals.