I wanted to get the opinion of some of the experienced guys on here regarding some loads a friend has been developing.
He is comparing these to factory loads and finding a significant recoil difference between the two.
All loads are fired from the same gun.
Projectile weights are either the same or no more than 5gr. difference (they are not the same projectiles).
Muzzle velocities are the same within normal deviation ranges.
Felt recoil is as much as 40% less in his loads compared to some of the factory loads.
What are the contributing factors that would be causing this? Recoil velocity related to powder burn rate is all I could think of.
What do you guys think?