Shoot 90 gr of 2F with 535 cast bullet in my .452 Whitworth. Works just fine, no drama at all. Think about all the black powder cartridges that use even hotter loads ? Ballistics about like a 45-70-500 smokeless load.
90 gr also in my .61 Baker flinter with a custom 1.4 ounce pure lead custom maxi ball.
Ballistics about like a Brenneke 16 ga Boar slug load.
Real muzzle loaders don't use 209 shotgun primers........
