Polish the feed ramp, just for clarification which bulk pack did you buy? Cuz if the have a good point and shallow taper they should feed well-i.e. federal bulk pack
Our local range started a .22 practical pistol league and I decided I wanted to use my AWC Amphibian S (really just a suppressed Ruger MkIII). As with any pistol, one must break them in and, ideally, with several types of ammo. After much trial & error I decided on CCI Selects. They work the suppressor the best and are the cleanest, most accurate ammo I have found for my Amphibian. What to do with the other thousands of different .22 rounds I bought during the first few years of the Obamanation, shoot them in all the rest of my .22 rifles & pistols! What a "blast!"Save whatever you bought for your bolt action & buy CCI for your simi autos-