Some more questions.

Given the standard bullet weight of the cartridge seems to be a 90 gr projectile ...

What sort of twist rate do the barrels have?

Secondly if the twist rate is designed for a 90 gr projectile, how do you think a 60, 70, and/or 75 gr projectile would perform in it?

Thirdly as above, but with reduced power loads?

Assume for the moment, a single barrel rifle, then also answer if the rifle was a double barrel?

Thanks.