.45 Colt Pressure Data
I am not sure if I posted this before. If I did just ignore this. 
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.
![[image]](images/uploaded/202510281306186900bfca0c478.jpg)
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.45 Colt Pressure Data
by Hoot 
, Diversityville, Liberal-sota, Tuesday, October 28, 2025, 09:35 (1 day, 8 hours, 25 min. ago) @ JimT
Saved and filed. Thanks!
Important ... not shown on the data sheet
The 300 gr. #45191 bullet was seated only deep enough to crimp into the top grease groove.
![[image]](images/uploaded/202510281449216900d7f12a24b.jpg)
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Thanks!
by Hoot , Diversityville, Liberal-sota, Tuesday, October 28, 2025, 10:43 (1 day, 7 hours, 18 min. ago) @ JimT
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.45 Colt Pressure Data
by Gunner , St Louis, Tuesday, October 28, 2025, 11:06 (1 day, 6 hours, 54 min. 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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41 Mags rule, Baers rock!
.45 Colt Pressure Data
by Slow Hand 
, Indiana, Tuesday, October 28, 2025, 17:14 (1 day, 0 hours, 47 min. 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.
I never tested Red Dot.
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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I never tested Red Dot.
by Slow Hand , Indiana, Wednesday, October 29, 2025, 04:15 (13 hours, 46 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.
You did well!
I am starting to eat into my Bullseye, Unique and 2400 powder and now I see Bullseye and 2400 coming back on the market ..
at $60+ a pound!!!
https://www.precisionreloading.com/cart.php#!c=103&s=in&l=PDR
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Red Dot and 2400 available
https://www.precisionreloading.com/cart.php#!l=PDR&i=RED1
https://www.precisionreloading.com/cart.php#!l=PDR&i=24001
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Ouch!!
by Slow Hand , Indiana, Wednesday, October 29, 2025, 08:25 (9 hours, 35 minutes ago) @ JimT
I can’t recall exactly what it was when I first started but it seems most pistol/shotgun powders were around &12-15 a pound.
I do remember the ACE hardware store where I bought my reloading supplies has Winchester primers for $1.75 a hundred or $15 for a brick of a thousand. I remember at the time thinking “who in the world buys a whole thousand primers at a time?!?” Ha ha; if I only knew…