It sounds like you are using Remington Cyclones which are a 36 grain HV HP. Try a different brand or stick with solids. Hollow points dont work that well in short barrels anyway. Not enough velocity to properly expand. I have good luck with Federal 525 bulk packs which are similar to your Cyclones for cheap shooting. Check your magazines to see if they are clean and the follower is not sticking. Also make sure the magazines are seating properly.