I have used 23.5 grains H 110 under 240 XTP’s for at least 30 years for my revolvers, Ruger (original style) Carbine,and a friend’s 77/44 with great success.
Edit to add: CCI 350 primers and Starline brass.
Also, with my brass for magnum revolvers, when I get a new box of 500, I first trim them all to uniform length, then just hit the case mouths with the chamfer tool enough to take the burrs off. This makes it possible to put firm, consistent crimps, halfway up the cannelure.
Last edited by cra1948; 05/12/23.
