Thread: Can twist rate be too fast?

Yep, what he just said! I have seen phenomenal accuracy out of quick twist barrels using light for caliber bullets.
Main thing is bullet quality, if the bullet is made with "lesser " quality jackets (meaning bullet metals used & variation in jacket walls thickness) it creates effectively an out of balance wheel effect.
Faster it is spun the worse the wobble from the balance, just like an out of balance car wheel. Faster you drive the worse it gets.
Top quality bullets counter this problem.
Good quality bullets are fine in quick twist barrels in other words.