By your own admission it has already been shot. Shooting a 22 has little or no effect on the life of the barrel. Handling will but it was made to shoot. Enjoy it as your Dad did. Keep it clean and well maintained and its value will only increase.
"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