Les, As long as they are target loads you should be alright. I'd check that all of your screws are tight on the receiver. RST and Poly-wad make a low pressure shells if you want to go that route. They are a little more $$$ than the standard target load. I'd be careful on what you choose as far as a hunting load goes, RST & poly-wad make a low pressure hunting loads that I've seen several posts about with no complaints. You can also always reload your own target & hunting loads. I'd ask anyone in this forum to post what they recommend.