It will not chamber. I can advance the bolt foward to just short of where the bolt handle should drop into position. I can't withdraw the bolt without knocking the rifle out of the stand. I have to tap the bolt handle with a rubber mallet. Half the time, I have to tap the case out of the chamber with a wooden dowel. There is no in between. Either it will chamber, or it won't. There was no tight chambering. This is Win brass. When shooting my OCW loads with the Win brass, I included a LC brass load that I know is good. Using it as a comparison. These LC loads were made with neck sized brass. Some of them were real tight, and one I had to tap out with a brass rod while at the range. I didn't fire any more of the LC brass loads. I plan to disassemble them and am thankful that I only have a few.