Dear Nitro 400, It would be most helpful if you would post the maker and vintage of the dg that you have personally shot monos and other inappropriate bulets through and ruined. It would be even better to know which mono bullets. Also, what damage was seen on the rifle immediately after the "event". This infomation would help the rest of us without your personal extensive testing know which gun/bullet combinations to avoid purchasing. This would be very, very valuable data. Regards.