50 yard accuracy with 158 SWC bullets

A little different spin on the 35cal bullets. (no pun intended)

Decades ago (1980's) I cast/shot only 2 bullets for the 38spl/357mags. The lyman 358311 158gr rn and the h&g #50 148gr wc. By the 1990's I got interested in molds and swaging bullets. Did a lot of testing/shooting over the years with different firearms chambered in 38spl and 357mag. Contenders, s&w's, colts, dan wessons, charter arms, rugers. Along with custom 1 in 10 twist and 1 in 11 twist barrels.

Several years ago, I decided to thin the herd and sold off all of my swaging equipment and most of my molds. Before selling everything off I decided to do head-to-head testing with the bullets I cast and swage. I tested the bullets in 38spl cases and 357mag cases. I used firearms with 2", 2 1/2", 4" (2x), 6" (3x), 8" & 10" bbl's. Twist rates were 1 in 10, 1 in 11, 1 in 18 7/8. Only used 6 different powders in the testing, 3 standard powders (bullseye/be-86/unique) and 3 magnum powders (2400/h110/mp-300).

Used these bullets for testing.
0A0Ga7O.jpg

Top row left to right:
Home swaged 158gr jacketed hp using a 380acp case for the jacket.
Mihec 640 series 158gr fn hp
Lyman 358439 158gr swc hp
cramer #26 150gr swc hp
lyman 358156 150gr gc swc hp
Bottom row left to right:
Lyman 358477 140gr swc hp
cramer 158gr rn hp "hunter" bullet
h& g #51 swc hp

ku7lR0W.jpg

I also tested these hb bullets, left to right
lyman 358431 155gr hb swc
raphine 150gr fn hb
Mihec 148gr hbwc

The back of the bus:
Bullets with a bigger/thicker bullet base (bottom drive band) tended to not only have higher velocities for the same load. They tended to be more accurate. Of the 4 different " Keith style swc molds I had, the cramer #26 performed the best velocity and accuracy wise. Sold the rest, still have the #26. As you can see in has the largest bullet base.
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The lyman 358311 has a large bullet base also.

The front of the bus:
Where the front drive band or bullet's shoulder end up in the leade of the cylinders plays a huge roll in accuracy. The bottom bullet is seated out further into the leade improving accuracy.
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Bullets like the lyman 358156 and the Mihec 640 series bullets have a high & low crimp groove/2 crimp grooves. This allows the reloader to set the bullet out further (longer oal) into the leade of the chambers.

Left, that mihec 640 bullet (sized to .358") crimped in the bottom crimp groove loaded in 38spl cases.
Right: The h&g #50 (sized to .357") loaded long/crimped in the middle crimp groove loaded in 38spl cases.
Both reloads have a heavy, consistent crimp. Crimping is subjective & I've always used a heavy crimp on everything I reload. I also use a expander designed for cast bullets, no wasp waist in the reloads/can't see the bullet in the case.
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Try to stay away from too hard of an alloy if you use cast bullets. I use 8/9bhn alloy to cast 99%+ of my revolver/pistol needs. On extremely rare occasions I use a 12/13bhn alloy to stop the cast bullets from "skidding" with hot magnum loads.

I don't do much @ 50yds anymore but I do have plinking/blammo ammo loads for the 357mag and the 44mag.
A mihec 640 series 250gr fn hp in a beater s&w 629/blammo ammo load for 50 & 100 yards. 6-shot group @ 50yds.
eZrMQsG.jpg

More blammo ammo 357mag loads shot with a s&w 686 and garbage mixed brass. Doesn't matter if I use the Mihec 640 158gr fn hp or the cramer 158gr rn hp. Or 5.5gr of bullseye or 6.0gr of bullseye. They shoot +/- 2" 6-shot groups @ 50yds.
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All measurements are outside to outside.

Anyway, I'd be looking for bullets:
with large bases
soft alloys
multiple crimp grooves or the ability to crimp them out in the leades of your cylinders
bullets that don't have sharp shoulders or if they do have sharp shoulders they have a large/long front drive band like these swc's. They also have a generous crimp groove.
MGkzk5b.jpg
 
Even today ... Elmer Keith's bullet designs just Keep On Trucking ...
Maybe the old guy did know a thing or two ...
About two years ago I bought a reprint of his 1936 book " Sixgun Cartridges & Loads " except for loads with Hi-Vel #2 powder about 98% of the book is still relevant , casting and bullet alloy's haven't changed a lick . The reprint is still available on Amazon fo $10 to $15 ... and if you reload ... and want to read exactly what loads Elmer Keith used ... snag one ... best $15 reloading book I ever bought !

Note ... This is not his later book "Sixguns" ...
... but "Sixgun Cartridges & Loads" 1936 , this is the $15 Reprint by Silver Rock Publishing ... don't get em confused !
Gary
 
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Forest has some great information there. I would add that Lyman cherry makers did not always follow the same pattern. I have a 358477 with a thick base that I sot for years with the 5.4 gr of Unique that came with most Lyman manuals in the 70's to 90's, It is now labeled as way to hot but 5 gr Unique does a nearly equal job.

I recognize that you are buying bullets but consider that you don't build a line of racing cars by buying off the shelf parts. I would find a small one man casting shop, call him and tell him what you want and offer to buy a lot at a slight premium.
 
Forest has some great information there. I would add that Lyman cherry makers did not always follow the same pattern. I have a 358477 with a thick base that I sot for years with the 5.4 gr of Unique that came with most Lyman manuals in the 70's to 90's, It is now labeled as way to hot but 5 gr Unique does a nearly equal job.

I recognize that you are buying bullets but consider that you don't build a line of racing cars by buying off the shelf parts. I would find a small one man casting shop, call him and tell him what you want and offer to buy a lot at a slight premium.

What is wrong with casting your own? Been casting for my handguns for the better part of 50 years.
 
Even today ... Elmer Keith's bullet designs just Keep On Trucking ...
Maybe the old guy did know a thing or two ...
About two years ago I bought a reprint of his 1936 book " Sixgun Cartridges & Loads " except for loads with Hi-Vel #2 powder about 98% of the book is still relevant , casting and bullet alloy's haven't changed a lick . The reprint is still available on Amazon fo $10 to $15 ... and if you reload ... and want to read exactly what loads Elmer Keith used ... snag one ... best $15 reloading book I ever bought !

Note ... This is not his later book "Sixguns" ...
... but "Sixgun Cartridges & Loads" 1936 , this is the $15 Reprint by Silver Rock Publishing ... don't get em confused !
Gary

There's nothing wrong with a swc, they're my "go-to" style bullet in the 45acp's and for plinking in the 44cal's (the +/- 245gr hp pictured in the above post).

Note the 44cal swc is for plinking.

The difference is all I have to do is marry the oal/throat in the 45acp bbl to the shoulder of the swc bullet and the magic happens. 3 lite bullets for the 45acp. Two of them are swc's, with the 5f cramer being 175gr instead of the standard 200gr because it's has a hollow base.
WyNKQjP.jpg

Same 4.3gr load of clays (excellent load for any +/- 200gr bullet in the 45acp/1911's). 5-shot groups @ 50ft.
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With a revolver it's a little different. There's freebore in the cylinders then the leade. After that there's the bbl gap and then the forcing cone. There's a lot of jumping, reshaping, distortion happening.

A swc with a sharp front drive band/shoulder is more susceptible to this type of distortion. If any distortion happens the nose of the swc follows and this upsets the yawl of the bullet.

More chicken scratch targets. Earlier I showed 50 yard targets using a 640 series & a rn bullet. This was the 25yd targets using the same loads (5.5gr and 6.0gr of bullseye). But also in the 25yd targets are a swc, namely the cramer #26.
9YSO2RC.jpg


The #26 bullet was tested @ 50yds with the other 2 bullets. It didn't end up in the picture.
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That's because it (the swc bullet) fell out @ 50yds. The other 2 actually did better @ 50yds then @ 25yds. Groups are not linier when target shooting with pistols/revolvers. If I'm getting 1" groups @ 25yds I expect to get 2 1/2" or 3" groups @ 50yds. I chalk it up to old age & a deuterating skillset.

When you pull the trigger the initial pressure/short start pressure pushes on the bullet's base. Anything under pressure goes to the least point of resistance. This is why hb bullets, long bodied bullets (wc's) or bullets with large bottom drive bands/bullet bases tend to do better accuracy wise/stay strait.

That's only 1/2 the accuracy battle. The front of the bullet is bouncing/sliding into the leade of the chamber of the cylinder. And then again into the forcing cone. Any skidding/flattening/canting of the front drive band of a swc causes the nose of the swc to follow. A wc bullet has no nose and will straiten any initial distortion out with it's long body. This is where the faster twist/spin comes into play. A fn bullet is affected more then a wc bullet by this distortion. But it does better then the heavy nosed swc's.

fn style bullets became popular in the silhouette competitions for a reason.

Keith designed an excellent bullet. But he also had a custom revolver made to shoot them in. I have a beater 629 truck gun. It will put 5 shots in a group and have 1 flier consistently.

If I were to recommend a bullet for the 38spl/50yd line I'd go with a type 3 wc like this 160gr version.
160 Grain Wadcutter (.359)-359-160-WC
 
The most accurate cast bullet from all my 38 specials and 357 magnums is Lyman #358432 the 160 gr, version plain base wadcutter .
I don't know why ... but it just works .
Lyman has dropped this mould ... I found a single cavity Lyman on Ebay and when I discovered how accurate it shot , in all my revolvers ... I discovered NOE makes it in a 4 cavity aluminum mould ... I ordered one so fast it made my head spin ... and now this is just about the only bullet I cast and load !
If you haven't tried it ... you need to !
See post #35 for a link for this bullet at Matt's Bullet's .
Not many reloaders / shooters know about this neat bullet ...
...It's a Sleeper !
Gary
 
I used to shoot a ton of NRA Action Pistol in the late-'80s until the early 2000s. My primary bullet for practice and local competitions was the Bull-X 158gr RN and SWC bullets, and I had zero problems with X-ring accuracy out to 50 yards with them. Unfortunately, they went out of business years ago, but I probably have 20,000 of their bullets still laying around. I just coated them with Alox and had no issues with leading.

As for large matches/Bianchi Cup, I moved to Remington 125gr SJHP bullets. Accuracy was a bit better, and surprisingly the point of impact with my 158gr practice ammo was the same.

Is it possible that your barrel just doesn't like 158gr lead? Have you tried those bullets in other .38s just as a test?
 
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Change to 357 mag.,158 lswc, Alliant 2400 @ 13.0 grs. Starline brass.
 
50 yd shots…do it all the time out here…my 7.0 grs BE-86 357 Magnum load using generic 158 gr cast SWC's (12 bhn) bounces around empty gallon plastic water jugs with regularity. 1,125 fps avg from Ruger 4 5/8 inch Blackhawk…statistically, equivalent to 7.0 grs Unique (my old load with old data, don't use it…hot loads using Unique will erode that forcing cone rapidly…1K rounds).
 
People tend to relate accuracy with a revolver to bullet design / powder etc . Yet there is the factors of cylinder throats being too small and barrel choke , tight spot where the barrel threads onto the frame . These factors affect accuracy more than most realize . Do you have to pay $4K for a revolver with correct dimensions internally , NO ! Last year I purchased one of the new Colt Pythons and none of the above factors were evident . It was as it should be , cylinder throats sized correctly and NO choke where the barrel threaded onto the frame . Most of my S&W revolvers have had one or both of the mentioned problem areas . I opened up the cylinder throats to the proper size , some required " fire lapping " the barrel . The end result was a substantial improvement in accuracy / no more leading the barrel from cast bullets . This has been my experience , yours may be different . Regards , Paul
 

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