.45 Colt Pressure Data

by JimT, Texas, Tuesday, October 28, 2025, 08:06 (22 hours, 28 minutes ago)

I am not sure if I posted this before. If I did just ignore this. :-P

Years back John Linebaugh helped me get .45 Colt loads pressure-tested at Hodgdon's in their pressure barrel. John had built the pressure barrel for them and had access to it whenever they weren't running tests.

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.45 Colt Pressure Data

by Hoot @, Diversityville, Liberal-sota, Tuesday, October 28, 2025, 09:35 (20 hours, 58 minutes ago) @ JimT

Saved and filed. Thanks!

Important ... not shown on the data sheet

by JimT, Texas, Tuesday, October 28, 2025, 09:50 (20 hours, 44 minutes ago) @ Hoot

The 300 gr. #45191 bullet was seated only deep enough to crimp into the top grease groove.

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Ele era velho.
Ele era corajoso.
Ele era feio.

Thanks!

by Hoot @, Diversityville, Liberal-sota, Tuesday, October 28, 2025, 10:43 (19 hours, 51 minutes ago) @ JimT

***

.45 Colt Pressure Data

by Gunner @, St Louis, Tuesday, October 28, 2025, 11:06 (19 hours, 27 minutes ago) @ JimT

Thanks, I love reading pressure data, interesting to see the pressure jumps with slight powder increase. One of the reasons I like older reloading manuals, they included pressure data on the loads.

Gunner

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I am with you Gunner! (nt)

by JimT, Texas, Tuesday, October 28, 2025, 12:19 (18 hours, 15 minutes ago) @ Gunner

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Ele era velho.
Ele era corajoso.
Ele era feio.

.45 Colt Pressure Data

by Slow Hand ⌂ @, Indiana, Tuesday, October 28, 2025, 17:14 (13 hours, 20 minutes ago) @ JimT

Thanks for posting that. It’s surprising to see the bullseye pressure so high, especially for the velocity. MTter fo fact, I don’t see any that are under max pressure for standard 45 colt loads. I know red dot and bullseye are pretty close and ,y standard lighter .45 colt load is 6.0 of red dot under a 454424. I wonder how it is for pressure.

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I never tested Red Dot.

by JimT, Texas, Tuesday, October 28, 2025, 17:18 (13 hours, 15 minutes ago) @ Slow Hand

I use Green Dot in the .45 and it works well. Unique is my favorite but it's kinda hard to find and I don't have but maybe a pound and a half left. I have used 231 also and it works fine, especially for the lighter loads ... which is what I shoot a lot of anymore.

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Ele era velho.
Ele era corajoso.
Ele era feio.

I never tested Red Dot.

by Slow Hand ⌂ @, Indiana, Wednesday, October 29, 2025, 04:15 (2 hours, 19 minutes ago) @ JimT

I have been using red dot for so long thst I can’t quite remember why! I started loading .45 colt with the Lee Hand tool and when I finally bought a press and die’s, 45 colt and acp were my first two I ordered. Red dot worked well in both ad. The only real issue is worry of a double charge in the bigger case. Maybe that fear started me off as a careful reloader many years ago.

I have burned quite a bit of unique but have looked for other options in the past few years with the scarcity of it. I have found 231 works well in many of my cartridges I load for and got a 4lb jug in a deal a few years back. Then more recently found an 8lb jug at a local shop so I jumped on it. I got lucky a few months back and bought big jugs of unique, red dot and promo from a guy who was tapering down his shotgun loading. The promo is only sold in 8lb jugs and is reported to be “red dot without the dots”. I have a few ounces left of a jug I bought years ago and In my testing, it was roughly 10% hotter than red dot, which worked great since I was basically using it for bulk loaded ammo, so I could use 10% less powder for the same velocity! I will have to look up some old loads and try them out with the new jug.

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