Just put bull barrels on my 2 sons 10/22s A adams & Bennett on one and a carbon fiber butler creek on my 9 year olds both are jamming bolt is only closing half way with the Adams and the butler creek is slicing the lead on one side on the way in and only works about 70% of the time I am using CCI Blazers and CCI Volocerters any advise is apreciated Thanks Keith