I've been shooting my Remington 700 ML for almost 20years, a lot of shooting. I became enamored with how accurate and repeatable it was. I have taken a lot of deer with it. Since it is a muzzle loader they were all one shot kills. I used to raise hogs and again that 50cal barnes bullet put them down in their tracks. In the beginning I had the click, failure to fire, symptoms. Called my gunsmith. He had me buy 10 cans of carb cleaner, soak the bolt in a coffee can for days in the carb cleaner, then in kerosene for days, then carb cleaner again and blow it out with an air hose. I lubed it up with RemOil and have never had a misfire since. It came with #11 cap ignition but I had my smith convert it to 209 primers. Never experienced any of the blowback problems discussed here. I put a 20 moa picatinny rail on it and a 4-15 Nikon Monarch and regularly hit steel at 450yds. Couldn't do it without the 20 moa rail. It is a tough, accurate and heavy rifle. I've been using 50gr Pryodex pellets in it from Cabela's. I started with 3 pellets, too much muzzle blast, so much it trashed my chronograph. I could have started a camp fire at 25yds with that. Went down to two pellets and have done all my shooting with that combo ever since.