This is a question that my neighbor is asking, I havent had a problem with my mosin, hopefully someone can answer this for him. Went to the range today and ran into a problem. See if you have any idea how to fix this one. Mosin Nagant M91/30 firing a 7.62x54R I have not checked it with a caliper yet, but it appears that the neck is swollen on two pieces of brass that I saved today from the range. One came out with a little coaxing, the other casing would not come out at all and the cleaning rod is too short without jag on the end of it, so I had to take it home. I installed a second cleaning rod on the end of the original and the brass came out, but not as easy as it should have. These were factory loads. FMJ Brass with brass case. If they are swollen, what can you do to fix that problem. Maybe look for a steel case like these military rounds I have for my 7.62x39 ?? Never run into that before, but the bolt was hard to open after both rounds were fired. Both pieces of brass stuck, but only the first round ejected after some coaxing it out. So, where do I go from here?