Trying to find out what size slugs got best results for m4 sniper 700mm. 25cal, there must be a size that shows better results than the regular. 25 ammo ,in .22 everyone knows. 217 or. 218 shows tighter groups and im sure someone have done it and I will love to hear about that also is rare but little bigger also works as .001 bigger, please share your experience and most important your numbers are exquisite in this platform, thank you much everyone shoot tight!