450 366'
There is a picture of this rifle posted a few posts down under Big Bore Eye Candy from Bigdoggy. In the 4th picture, it is the green stocked rifle. I have the original stock stock in wood also. Art told me that he has a lifetime warranty on his rifles, regardless of who owns them. They keep all their records by serial number at the plant, so I am sure we will get to the cause of the problem soon. 500 nitro, you are correct about measuring. I just did a quick measure of the brass to see if something was way off to start with.