Ah, but it isn't just clearing the hammer that is the problem. I just took Quick or Mac's advice from a year ago about using higher rings to get a more consistent hold. My problem was that the stock just doesn't fit me. I have an awesome 223 barrel with a Simmons ATV but when I shoot I have to hold the bottom of the butt against my collarbone (had part of the collarbone removed in a shoulder surgery so my right shoulder is lower than my left, don't ask). The point is that a long eyerelief shotgun scope (Simmons 2.5x20) on my 44 barrel with Med rings doesn't bother me. The ATV scope with High rings on the 223 just doesn't line up. Putting Extra High rings on the scope looks goofier, but it is more comfortable.
You may have to tinker a little is my point.