Airforce Airguns has a .45 cal that they call the Texan and a suppressed model, the Texan SS. I've had a Texan that we turned into an integrally-suppressed model before they came out with their SS...AWESOME. Fill it from a scuba tank. The heaviest pellets I've shot are 400 gr....packs a punch and the hogs don't like it! Before the .45 cal, we killed a ton of pork with their .25 cal Condor fitted with one of our screw-on silencers. We mainly use them in areas where there are firearms ordinances, for hog control, but they are a lot of fun to plink with too!