anytime you increase velocity of a projectile, small forces involved begin to play a greater role.

the reason some of these projectiles are "erratic" (a subjective word, since the "erratic slugs are shooting ONLY 5" groups at 100yds from a SHOTGUN) is because ammo manufacturers cant make a perfect projectile for these shells, that will fly well everytime, without making these slugs even pricier than they already are.

take the "copper solid" by remington, it's a very accurate slug with its fairly low velocity, but is a terribly poorly made slug if you look closely at the construction, especially the hollow point, its very asymmetrical, not flat, etc. Add 500fps to that slug, and it becomes MUCH less accurate because those imperfections cause that much more drag/wobble and reduce accuracy.

With slugs like the hornady's, ballistic tipped, well made/balanced bullets, coming out, i see accuracy getting even better. You cant expect sub 1MOA out of a hollow point, but with good bullets, with considerably higher Ballistic Coefficients coming out, look for accuracy to catch up to where retained energy is getting.


I should post some pics of my "Franken-Coppers" i made, cleaned up, lathed, copper solid slugs, that i added polymer tips to Hornady beat me to the punch though [:@]