Heya 500gr-

About barrel time and burn rate...

Doesn't the burn rate --and so the relationship between the intensity and druation of the push or recoil impulse *before the bullet leaves the muzzle*-- affect the placement of the group print too?

Have you ever found in your work with your doubles that with different powders that at similar velocities and bullet weights, different burn rate powders cross or not and/or shoot above or below the point of aim?

Just curious here.

--Tinker