Get POWERMAN in here! He's our resident 10mm-ophile.
Just got through testing out some longshot and 800x w lee 175 tl swc as well as some 180 jfp mag tech. 7.5gr 800x made a good load behind the lee 175 and 8.5 gr 800x made great load behind 180gr jfp mag tech. Both loaded to 1.26 functioned great in 4.5”xdm. Not the max loads but respectable till I chrono in spring. Also 7 gr longshot behind 175tl swc was decent group lighter load. For generic plinking i is 180gr hsm plated over 5.4 gr titegroup. Hits ok and cheap to loadWhat powders to you like for the 10mm? For light to moderate, and heavy loads? I have AA#5 and #9. I here a lot about Longshot and Blue Dot ... Thanks from a newbie to 10mm.
That’s really good data. My Hornady reloading manual shows up to 13.5 gr #9 but I had about same results as you. 12.5 gr #9 gives me 1250fps w Hornady jfp 180 gr out of my 4.5”. I kept thinking no way I’m a grain below and still getting that much velocity. I use all those other powders to shoot w but for bear defense I’ll be working that # 9 up a little more but it’s super accurate and consistent