they work with my medium bore stock barrel... probably work with large too
Strengths:
*batch after batch without dimples!
*breaks on target, not in barrel (ran 3 bags of 500... no break!)
*VERY CHEAP!!!!!!!!!!!!!! (like, 25 bucks for 1K)
Weaknesses:
*dont fit my friend's small bore boomstick (it's small to fit his phantom)
Conclusion:
RPS made another great product when they made flash. My friends are doing great with their RPS Premium and Big Ball, and I'm hitting lucky with my Flash. I reccommend these to anyone looking better buy with a smaller wallet.