I like you gun, but its a pain to propery clean, anyway about you loads. I'd step down a little in bullet weight unless you're hunting elk or moose or if you're hunting tight cover where range is not much of a factor. I have a MDM Buckwakka .50 cal I use a 245gr powerbelt bullet with a gas seal and shoots very flat and decent out to 175yd. If I had a good reason I'd be confident but careful at 200yd. I've killed elk with 180gr. so why use 348 unless you're only shooting 60-90 yds and want to hammer something. Another thing, try different loads and settle on a heavy (slower, less range, but tremendous wallop) and a flat shooting lighter load for range. Still plenty of killing power down range....