45 colt sammi spec 255 lrnfp and 231 powder loads

Dane Burns · 09-19-2009, 09:17 AM

With finding powder an issue these days what are the best loads you have come up with for the old Colt?

I am using only 250 or 255 gr bullets and want something close to 850 or 900 fps.

I have used 2400 which I think sucks. 231 which is OK...but not great. And my two favorites to date are Unique...but a pain to load as the Dillion hates it. And surprizingly Bulls Eye......

Knock on wood. I don't get a case detonation with the small powder charges.

JohnnyT · 05-03-2010, 09:28 AM

Dane...If you're still following this...you can get what you're lookin' for with 250 grain cast bullets and 8.5-9 grains of Unique. It's a classic .45 Colt load that doesn't top SAAMI spec pressures for the cartridge. If your gun is a Colt or an Italian clone, I'd hold that at 8 grains for about 850 fps from a 4.75 inch barrel. They're not quite as durable as the New Vaqueros, and they'll do much better if the ammo is downloaded a bit.

If the gun is an original Blackhawk framed Vaquero...it'll take whatever a Blackhawk will.

09-19-2009, 09:17 AM	#1
Dane Burns Senior Member Join Date: Mar 2001 Location: Issaquah, WA Posts: 3,831	45 Colt loads With finding powder an issue these days what are the best loads you have come up with for the old Colt? I am using only 250 or 255 gr bullets and want something close to 850 or 900 fps. I have used 2400 which I think sucks. 231 which is OK...but not great. And my two favorites to date are Unique...but a pain to load as the Dillion hates it. And surprizingly Bulls Eye...... Knock on wood. I don't get a case detonation with the small powder charges.

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05-03-2010, 09:28 AM	#2
JohnnyT Senior Member Join Date: Apr 2010 Location: North Carolina Posts: 724	Dane...If you're still following this...you can get what you're lookin' for with 250 grain cast bullets and 8.5-9 grains of Unique. It's a classic .45 Colt load that doesn't top SAAMI spec pressures for the cartridge. If your gun is a Colt or an Italian clone, I'd hold that at 8 grains for about 850 fps from a 4.75 inch barrel. They're not quite as durable as the New Vaqueros, and they'll do much better if the ammo is downloaded a bit. If the gun is an original Blackhawk framed Vaquero...it'll take whatever a Blackhawk will.