The very first double rifle I ever bought was one of these; I shot a lot of deer with it. Eventually, I traded it for part payment on a Westley Richards in same caliber, and more eventually I "acquired a few other makes in same caliber, including one rather mint hammer rifle, but I still missed my first one, the Cogs. & Harrison, so when I found another one not long ago, I bought it--odd, but in the past year or so, I have seen several of them floating around on the American market. My "new" Cogs. is same as all of them I have ever seen, tight as hell, solid as a rock, plain, but stout enough to last another lifetime. What can't you like about these? Last deer I shot, the largest blacktail deer I had ever seen, with my Cog., I shot at about 70 yards, directly across a canyon (he was climbing up other side of a very steep canyon wall). I saw the bullet hit the dusty dirt on other side of deer, with dust flying up as bullet hit ground, so I thought that maybe I shot over him slightly, but when he got to the top of canyon, about 50 yards or so, after he was shot, he rolled over and died. The bullet passed through his body, heart area, and hit the dirt on other side. Good penetration, good bullet performance, for 270 grain bullet @ 2,000 fps. Some of these caliber double rifles were regulated for 270 grain bullets, and some were regulated for 300 grain bullet (my hammer gun is regulated for the 300 gr. bullet).