550 Plain base, #2 alloy, lube allox,215 Fed,45gr/XMP5744,no lead in barrel 1 1/2"@100y mild load Vel:+- 1200ft/s ??

Same bullet,straight wheel weight water hardened,allox lube,100gr /IMR 7828,6.5gr brann fiber,compressed,vel.1900ft/s.
No lead in barrel, bran acts as a gascheck.

Some like cotton or dracon for fillers,fillers are needed on the plain base bullets at the higher speeds.

Hope this helps Martin

Fill it up with IMR-7828 and/or RL-22. Use H-4831 and leave a little space, maybe 10-15 grains less than a full case under the bullet. Using 575 grain bullets and a full case, slightly compressed load, I get about 2200fps.