I don't think this is too bad a time to bring up a mossy old BPCR homily,..."The Law of diminishing Returns"
Given bullets of equal WEIGHT,.....and of the same caliber, and driving em' with Black Powder,....at a certain point one achieves absolutely NO more velocity, and just starts inducing more violent recoil.
Inarguable and proven fact, this.
I've been amused and somewhat baffled at the insistence in mind numbing , body wrenching, abusive recoil, for a LONG time.
STAY with heavy bullets,....just back off on your charge weights a bit, ....and enjoy life.
GTC