Stan
I am as dumb as it gets when it comes to this math but from exsperience a .410 is very humbling, to me it was because of the lite weight of the gun as well as the load, but you need to order the book Sporting Guns and Gun Powder by Frederick Toms. It was reccomended to me last week by someone on double gun.It is an awesome book full of all this useless info you are talking about.Numerous experiments!


monty