These bullets are RNFP 250gr. hard cast with a red lube ring. Gun is a Blackhawk.
I'd like to push these bullets to +P velocities but am unsure of the safety/accuracy aspect to doing so. One "gun buddy" told me to keep them under 1000fps or they will "lead up" the barrel. Which I guess is a mess to clean up. Primary reason to reach 1200, 1300 or more is to improve accuracy past 50 yards. I'm not Cowboy shooting.
So can I push these type bullets past 1000fps safely? Or am I trying to do more than they were made to do?
My powders are H110, Longshot, AA #7, and HS-6. Any of those powders better than the other with what I am doing?