Paul5388
US Veteran
Since my last post, I've acquired a .45 Colt, but it's a H&R BC Carbine with 20" barrel.
I don't have any .45 Colt dies yet, so I used some Lee .45 ACP dies and a Universal Decapping Die. That way, I only "neck size" the cases.
The RN seating stem is a little hard on SWC, but it does work.
Here's what they look like with a slightly rounded nose.
They were loaded with 13.0 gr of Blue Dot that produced 1270 fps MV and 970 ft lbs of ME with a WW LP primer.
When I used 23.0 gr of H4227, I got 1455 fps MV and 1275 ft lbs of ME, again with a WW LP primer.
The 13.0 gr of Blue Dot load with a RCBS 45-255-SWC (270 gr) produced about 5 fps more than the longer nosed 270 gr bullet.
19.0 gr of 2400 gave me 1450 fps MV and 1263 ft lbs of ME.
Remember, I shot these out of 20" of barrel and there may be an OAL problem with longer bullets. I seated to the crimping groove on all of these loads.
As I mentioned before, I shoot 960 fps and more with 270 gr bullets out of a 5" M625 in .45 ACP. In fact, it seems like I had them over 1100 fps with no ill effects.
I don't have any .45 Colt dies yet, so I used some Lee .45 ACP dies and a Universal Decapping Die. That way, I only "neck size" the cases.
The RN seating stem is a little hard on SWC, but it does work.

Here's what they look like with a slightly rounded nose.

They were loaded with 13.0 gr of Blue Dot that produced 1270 fps MV and 970 ft lbs of ME with a WW LP primer.
When I used 23.0 gr of H4227, I got 1455 fps MV and 1275 ft lbs of ME, again with a WW LP primer.
The 13.0 gr of Blue Dot load with a RCBS 45-255-SWC (270 gr) produced about 5 fps more than the longer nosed 270 gr bullet.
19.0 gr of 2400 gave me 1450 fps MV and 1263 ft lbs of ME.
Remember, I shot these out of 20" of barrel and there may be an OAL problem with longer bullets. I seated to the crimping groove on all of these loads.
As I mentioned before, I shoot 960 fps and more with 270 gr bullets out of a 5" M625 in .45 ACP. In fact, it seems like I had them over 1100 fps with no ill effects.