After trying these 240gr Acme powder coated LSWC bullets and reaching max loads with Universal (1337fps) and HP-38 (1419fps) that still won't cycle the action, I dipped into my stash of precious Blue Dot. All 3 loads cycled just fine but but holy tumbling keyholes at 25 yds.
The highest load, 16.2gr, had 2 that didn't tumble but 3 that did. The Xring shot got my hopes up.
gun cal load avg SD notes
Ruger 44 carbine 44 Mag 240 gr Acme LSWC 14.2 gr Blue Dot 1477 12 All shots tumbled, keyholed
Ruger 44 carbine 44 Mag 240 gr Acme LSWC 15.2 gr Blue Dot 1548 17 All shots tumbled, keyholed
Ruger 44 carbine 44 Mag 240 gr Acme LSWC 16.2 gr Blue Dot 1605 34 3 out of 5 shots tumbled, keyholed
All told, I fired 15 rounds and the barrel leaded up pretty well, even with powder coated hard cast bullets.
The piston had a nice layer of lead deposited.
After cleaning.
The culprit.
I will start working back down the Blue Dot loadings to try to find middle ground between bullet tumbling hot loads and fail to cycle weak loads. One thing is for certain, Blue Dot produces a lot more gas than Universal and HP-38.
Gringop
PS. I know that JHP bullets will probably perform well with these loads, my goal is to get a general practice load that will work the action and still have enough penetration for hogs and deer. I've got some gunshow JHP reloads that do 1630fps. I just need to get a load that works for the 150 of these ACME bullets that I have left.