November 16, 2015, 04:15 PM | #1 |
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40 S&W loads
I need help with finding a safe load using Power Pistol powder and 170 cast bullets. I am having problems finding a load in manuals or online. If anyone can help I would be thankful.
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November 16, 2015, 04:58 PM | #2 |
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If you seek a PUBLISHED load that is safe, scour your manuals and sources for either a 175 or 180 grain cast lead load using Power Pistol and know that you are safely using a slightly lighter bullet.
There may not be these loads however (sorry, I am away from my load bench & sources) because Power Pistol has never been a "popular" propellant choice for cast lead slugs. May be worth noting that .40 S&W is also not a popular choice for pairing up with cast lead bullets either.
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November 16, 2015, 05:07 PM | #3 |
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Lyman lists a 175 grain cast bullet with PP:
Start 5.9 908 fps Max 6.6 998 fps |
November 16, 2015, 07:29 PM | #4 | |
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November 17, 2015, 08:25 AM | #5 |
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No barrel leading in my .45 Colt or .38 Special with Power Pistol and cast bullets (or swaged Speer SWCHP 158's in the 38). Works great, and since I use it in all my autoloaders, I have a lot on hand.
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November 17, 2015, 11:54 AM | #6 |
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I gave Power Pistol a try back when it was very difficult to get any of my other "regular" pistol powders and eventually settled on a load of 6.5 gr of PP under a Magnus 180 gr TCBB bullet (their No. 101). Works great in my Sig 229 - no leading, no other problems.
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January 28, 2024, 06:26 PM | #7 |
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I loaded 4.0 grains of Titegroup today on a 180 grain lead laser cast bullet. Velocity was 932 fps with S.D. of 10 on 5 shots . Groups were great at 15 yards. Shot out of a CZ P09. Going to try 3.9 grains later. No problems. No signs of over pressure.
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January 29, 2024, 02:05 AM | #8 |
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I don't understand cast bullet problems with Power Pistol. I've used it to successfully push 45acp hard cast.
I would certainly start with 180gr loading and see if you like the feel of ~1100fps 170gr fodder. |
January 29, 2024, 11:24 PM | #9 |
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Yes, just use 180 fmj load data for power pistol. A jacketed bullet is harder and produces a bit more pressure than lead bullets of the same weight so substitution of a lead bullet using jacketed data is pretty safe. Also as others have stated, substitution of a lighter bullet for a published load is perfectly safe. The only potential problem is if you push the bullet too fast and it leads up your barrel. It's very hard to do with 40 S&W. Much more common in 9mm and 357 mag with typical muzzle velocity above 1100fps where you really should be using a lot of bullet lube or a jacketed bullet. At 950 to 1000 out of a 40 or 45 auto leading isn't usually a problem.
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February 3, 2024, 02:44 PM | #10 |
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Loaded 3.8 grains of Titegroup on 180 grain Laser Cast bullets today. Groups were great at 15 yards. Velocity was 886 fps. CZ P09 .40 S&W . No signs of pressure. S.D. of 17. Various brass ..PMC, Remington, Blazer, Federal
Last edited by sdrnavy91; February 3, 2024 at 08:05 PM. |
February 5, 2024, 08:03 AM | #11 |
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I'd start with published 180gr data and work up from there.
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February 5, 2024, 01:21 PM | #12 | |
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Both have data with Power Pistol powder . It is safe to use the starting data for the 175 gr. bullets to work up loads with a lighter 170 gr. bullet ... those weights are very close to each other and will give you similar results with the some what lighter 170 gr. projectile . Gary |
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