Not saying its impossible to have a crack but I've only ever heard about one other Mosin having a catastrophic failure. Where did you get the T53? Can it be returned? How long have you had it? How many rounds have you put down the tube? Did you have it ultra sound or dye penetrant inspected? Are you sure the gas leak isn't a head space problem or a bolt problem? Pictures Pictures Pictures ! Show us.
"War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling, which thinks nothing is worth war, is worse. A man who has nothing which he cares more about than his own personal safety is a miserable creature, and has no chance of being free unless he is made free and kept so by the exertions of better men than himself" John Stuart Mill
A government which robs Peter to pay Paul can always depend on the support of