I shoot rock on a regular basis with an M2, one handed occasionally(just for fun) and I have never had an ftc. The only time I've seen an M2 or SBEII not cycle properly is if they are dripping with oil, or they are using shells less than 3 dram before the gun is broken in.you have to hold on to them tight(ie. stock to the shoulder),if not, it won't cycle properly.
no joke? so my 12 gauge with slugs will be able to take down a deer if i aim properly? this will save me a lot of money if i dont have to buy a rifle for deer. (this season is my first season ever im going deer hunting, and we all )know guns aint cheap.)I sold my buddys son a Mossberg 500 for $10 I had won at a banquet. His dad bought him a slug barrel and last season he shot a whitetail at 265 yrds. Imagine that. Those 20s are deadly for whitetails.