Buffalo Bore and Undewood .38 Special +P

IMO that's not right. The 40 years there was no +P designation because before 1972 SAAMI didn't recognize +P ammo. You can't mark a gun +P if there are no +P ammo ratings.

Its a little like finding an ancient coin. It can't be real if the date stamp is 1025BC. How could they know?


There have been test with a S&W M15 where ammo was tested in it that was above the standard 158 Lwc at around 890fps and a 125 gr JHP at 945fps .

These test in that 4" revolver had a 125 JHP Super Vel doing 1089fps
and a lead 158 gr bullet doing 930fps.

I think they knew about the fps and high pressures;
maybe they though that their revolvers were up to the task,
of shooting it?

However, these loads were tame, compared to the 38-44 loads
with their beefed up frame.
 
Pretty sure I have loaded 12 Grains of 2400 in 38 cases.
With 150 and 160 Grain cast bullets. Lyman Molds, Elmer pattern.
Shot them in 357s.
 
I don't personally intend to shoot a lot of the Underwood or Buffalo Bore load, which should probably be marked +P+, but it is not a bad thing to have some in reserve. I tend to load my own .38 special ammo with 155 to 170 grain SWCs at 900 to 990fps. If I want milder ammo I have a good bit of older mild factory loads. These were purchased by the Case with free shipping and no taxes during better times. My M – 15–3 usually has a couple of my hand loads and at least one heavy fmj and a couple +P SWCHP hand loads in the cylinder. It's nice to know that by loading six of the Underwood Loads my M-15 can stand in for a .357.
 
Post I did on another Forum:

Was looking at a 1948 SHOOTERS BIBLE last night. In the factory cartridge section it has listed the loads that were available in .38-44.

Remington and Peters:
158 grain Lead
158 grain Metal Piercing
110 grain "SPL" (Highway Patrol Metal Piercing)

Winchester:
158 grain Lead
158 grain Metal Piercing
150 grain Metal Piercing

Western:
150 grain Lubaloy Coated
150 grain Metal Piercing
200 grain Lubaloy Coated

In the Factory Ballistics section they list all the Remington and Peters 158 grain loads (Lead and MP) at 1115 fps.

Western 150 grain (MP and Lead) at 1175 fps

Winchester 150 MP at 1175 and the 158 Lead 1115

All were listed from a 5" barrel. It also states that the .38-44 loads were now DISCONTINUED probably because the .357 was introduced.

...a shame that the other Highway Patrol loads were not listed...would have been interesting.

Found a S&W Factory brochure probably from just before the .357 was introduced, as it was not listed as a factory round. The listed velocity of the 158 grain .38-44 was 1125 fps, 444 ft. pounds of energy and penetrated 12 7/8" pine boards spaced 7/8" apart. It did not list a barrel length. By comparison the .38 Special 158 grain bullet was 847 fps with 252 ft. pounds of energy and penetrated 8.5 boards. The .44 Special 246 grain bullet was 767 fps and 323 ft. pounds and penetrated 7.5 boards...

These velocities correspond with the loads in the old Lyman Reloading Manual I have. The Buffalo Bore Outdoorsman and LSWC-HP loads are just a little faster than these old factory 158s and the same as the 150s.

From the BB Website:
Item 20A: 158gr., very soft cast, semi wad cutter, (Keith) hollow cavity, with a gas check. This bullet will mushroom violently on impact and will penetrate roughly 14 inches in human flesh. Again, this bullet is gas checked and will not lead your barrel.

➤ 1,040 fps (379 ft. lbs.) -- S&W mod. 60, 2-inch
➤ 1,059 fps (393 ft. lbs.) -- S&W mod. 66, 2.5-inch
➤ 1,143 fps (458 ft. lbs.) -- Ruger SP101, 3-inch
➤ 1,162 fps (474 ft. lbs.) -- S&W Mt. Gun, 4-inch

ITEM 20H

PRESS RELEASE FOR BUFFALO BORE 38 SPL +P 158gr. HARD CAST OUTDOORSMAN

This load was designed for those who need a deep penetrating 357 mag. or 38 SPL load to be fired from lightweight alloy 357's and any 38 SPL revolver. Lightweight alloy 357's develop multiple problems when firing our 180gr. 357 mag. hard cast turbocharged (Item 19A) ammo or any make of full power 357 ammo. Yet many folks want a deep penetrating "outdoor" type of load for their lightweight pocket 357's, so here it is. Whether you are shooting gators or bears in the head, this load utilizes a hard flat nosed bullet, at sufficient velocity, even from 2-inch barrels, to fully penetrate either.

This load is safe to shoot in all 38SPL and 357 magnum firearms of modern design that are in normal operating condition. In the super lightweight alloy revolvers (around 11-12 oz.) the bullet will not jump crimp under recoil provided you do not subject an unfired round to more than 5 or 6 firings. In all steel guns, even short barreled ones, crimp jump is not an issue as all steel snub-nosed revolvers are much heavier than the alloy versions.

This load utilizes a flash retardant powder that will not blind the shooter in low light conditions, which is important as wildlife and criminals get much more active when darkness comes.

This bullet is hard cast and properly lubed and as such will not substantially lead your barrel. You should find no degradation of accuracy when firing many cylinders full of this ammo without cleaning.

We never use extra long laboratory barrels to produce our advertised velocities, which we feel is dishonest to the customer as those extra long barrels produce extra high velocities, which you cannot duplicate with stock revolvers in the real world. Instead, we use stock firearms and you can see the velocity results below.

➤ 1255 fps -- Ruger GP 100, 6 inch barrel, 357 mag.
➤ 1186 fps -- S&W Combat Masterpiece 6 inch barrel, 38 SPL (circa 1958)
➤ 1146 fps -- S&W Mt. Gun, 4-inch barrel, 357 Mag.
➤ 1167 fps -- S&W Mod. 15, 4 inch barrel, 38 SPL (circa 1968)
➤ 1112 fps -- Ruger SP 101, 3 inch barrel, 38 SPL
➤ 1043 fps -- S&W Mod 66, 2.5 inch barrel, 357 mag.
➤ 989 fps -- S&W Mod 340PD, 1 & 7/8 inch barrel, 357 mag.
➤ 1027 fps -- S&W Mod 642 (pre-dash), 1 & 7/8 inch barrel, 38 SPL
 
I believe they have confused the Model 15 with the Masterpiece. A Model 15 is a Combat Masterpiece and has a 4" barrel. A Model 14 is a K-38 Masterpiece and has a 6" barrel.
 
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