With a 9 twist you may not be able to stabilize the 75 gr. The note on the end of the 75gr A-Max's I have says "for 8 twist barrels" as does the Berger 80gr and the SMK 80gr. If you want to shoot the heavier 22 cals you might want to go to an 8 twist, if you go to 90gr you will want a 7 twist.
Dave
With a 9 twist you may not be able to stabilize the 75 gr. The note on the end of the 75gr A-Max's I have says "for 8 twist barrels" as does the Berger 80gr and the SMK 80gr. If you want to shoot the heavier 22 cals you might want to go to an 8 twist, if you go to 90gr you will want a 7 twist.
Dave