Recently I've been kicking around the idea of buying a chamber insert for my mosin nagant, purely as a novelty thing. Does anyone have any experience with these? Also If I end up deciding to get one, which caliber should I pick? I know there's a couple you can pick from, like 7.62x25, .32 acp, and others. The main reason I am asking which caliber to pick is because I've heard that specifically with the 7.62x25 one, the round can get stuck pretty good inside the insert, not sure if this is true or not.