Originally Posted by MagnumManiac
H110/296 should be used with near max loads and a very heavy crimp!
Have you fired any factory rounds through your gun?
If so use them as a comparison to your primers, other than that you can only guess at what pressure you're getting.
24gr of H110/296 is what I load with 240gr pills, this has been a very safe load in numerous pistols and lever rifles.
The crimp was what I would call middle of the road, hard to quantify with a roll crimp. I did not start
below book loads, but with a load right in the middle of what a couple different books recommend the primers were flattened, dished, and generally looked like WAY to much pressure.
In addition, the gun shows pressure early with every powder I have tried. These include: 800X, 231, Clays, and HS-6 (All powders I had on hand)
I used to load and shoot 25-30,000 rounds a year worth of 9mm, 40S&W, 45ACP, and 38spl. when I was shooting USPSA and IDPA regularly so loading for a handgun is not new to me, but I have never seen a handgun behave this way.