Russell,

I only have one dead Springfield slide to my credit ;^( The frame is still in use, as well as the barrel. I have wrecked my fair share of brass over the years, and my kinetic bullet puller has seen some use ;^) So all in all fairly lucky, or at least methodical enough to catch a few of my own goofs.

You might find the 300 starts to hit in the brass case web before any hope of a load. I have only been as high as 250-255. I did try and seat a few heavier bullets last week in acp brass to get a feel for feeding and nose profile, and few got into the case web. Them be some goofed up rounds, but I did not loose any powder or primers.... The nose profile is gonna be the deal breaker there.

Craig