All my life, until a couple of years ago, I shot pretty well, including qualifying as expert with a HG in the USMC (which actually did not seem to be quite that high of a bar), but I switched from the Weaver to the Isosceles stance a couple of years ago (after reading the book "Surgical Speed Shooting" and after my brother said that the tecniques in it helped him out, and he's a better shot with a handgun than me to begin with). I wonder how most others shoot and how it helps or hurts. Today, when shooting my 10mm, I was wondering why my group size was opening (essentially doubling). Then, I realized I had canted my body into the Weaver without thinking after reloading. I moved back into the Isosceles stance, and I started hitting nearer to the bullseye again. That was the first time I had accidentally switched back to the Weaver, and thought the results were interesting. I wasn't rapid-firing, but wasn't taking more than a second or so between shoots. Am I alone on this one, or do any others out there shoot significantly better in one stance than the other?