The point of your experiments is???? If you want to shoot a 460 Rowland or a 357 Mag why not buy one? All you are doing is proving weaker cartidges can be made to blow up, and that has been well proven long ago by many others.
An old Air force saying I'm fond of is "metal has a perfect memory". Just like with airplanes, the metal in your guns remembers everything you are doing to it, and some day it will remind you of past abuses. You should have your remaining guns examined by a qualified gunsmith to see if they are still safe to shoot.
Tom
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Clark:
So I worked up past 45 Super to 460 Rowland and beyond in a 45. I tested lots of 38 specials to see which ones could take more than 357 mag loads. Now I am in pursuit of the knowledge about 9mm. Life has risks. It's great when we get to choose our own.[/quote]