Shooting high BC .458 rifle bullets in HPH sabots

[KMG]

Has anyone ever experimented with .458 cal bullets with the MMP sabots for that cal bullet in a .50 muzzeloader? Looking at bullets in the 300-450 grain range. The 458 Barnes Original 400 grain semi-spitzer flat base has a .389 BC & a .272 SD. The Barnes Triple Shock X in 450 grains has a .488 BC & a .306 SD Those numbers are hugh compared to anything that is offered specifically for a muzzeloader. This would be a serious big game bullet & that being said the higher BC & greater weight of these bullets would also aid in longer range trajectory & down range energy. Don't know if the 1-28 twist would be enough to stabilize these pills in a sabot or not, but this will be a summer project for the Encore. Your thoughts, experiments & experiences?

 

[LouBoyd]

Has anyone ever experimented with .458 cal bullets with the MMP sabots for that cal bullet in a .50 muzzeloader? Looking at bullets in the 300-450 grain range. The 458 Barnes Original 400 grain semi-spitzer flat base has a .389 BC & a .272 SD. The Barnes Triple Shock X in 450 grains has a .488 BC & a .306 SD Those numbers are hugh compared to anything that is offered specifically for a muzzeloader. This would be a serious big game bullet & that being said the higher BC & greater weight of these bullets would also aid in longer range trajectory & down range energy. Don't know if the 1-28 twist would be enough to stabilize these pills in a sabot or not, but this will be a summer project for the Encore. Your thoughts, experiments & experiences?

Firing a bullet from a sabot doesn't change the twist rate needed to stabilize it. Temperature, elevation, bullet shape and velocity all affect stability. The only way you'll know is to load and shoot some groups at the distance and conditions you plan to hunt and check for acceptable accuracy. Winter is a good time to do the tests. If they work in cold air they'll be ok when it's warmer.