Re: 7RUM reloading problems
I double checked that the resizing die was touching the shell holder. I loaded up a dummy round without primer and powder and it is the one that will not chamber. I did not try one just after resizing without a bullet seated. I can do that tonight.
The thing that bothers me is that, as stated before, when I measure the difference between a round that will chamber and one that will not, I do not notice a difference that should effect chambering the round. If anything, I've found that the round that doesn't chamber is actually a little smaller in most dimensions which should make it chamber a little easier. The one thing that I didn't check was the taper of the round itself, from the shoulder down to the rim. I know that the o.d. at the shoulder is within spec but I did not really check lower that that. Is there any way that if the taper is out of spec it could be causing the problem?
One other note, when I started running into problems I took a marker and painted the bullet, neck, and shoulder to see if I could potentially see what was causing the problem. I then tried to chamber the round and put a little force on it hoping that it would mark up the paint that I had put on the round. When I removed the round I cannot see anywhere on it where it may have rubbed or anything causing it not to chamber. This just confused me greater. I'm thinking about borrowing my uncles RCBS FL sizer die to see if it makes any difference.
Thanks for any input on this matter.