Thanks Lee. That sounds like great projectile speed. In your post, you typed, "50/40 blue sabot, Shock Wave 200gr.... gives both the sectional density and BC".

Newbie questions:
1. what is "sectional density" and
2. what is "BC"?

And, a 3rd question: Iowa DNR regulations for legal muzzleloaders reads as follows: "Muzzleloaders: Flintlock or percussion cap, muzzleloading rifles or muskets between .44 and.775 caliber shooting single projectiles".

If I'm shooting a 50 caliber muzzleloader, but use the blue sabot with a 40 cal. Shockwave projectile (like your friend did), will I be legal for killing deer in Iowa with this combination?