Hi,

I just bought a Mosin Nagat 91/30 from Westrifle, and from my inspection, it looks excellent. No cosmoline, smooth action, good bore. Thank you very much for a quality rifle. As for questions:

1) Should I buy a headspace gauge? If so, is the field gauge enough or should I splurge on all 3? (Go, No-Go, Field)
2) Is hot water enough to clean off corrosive ammo? I've heard mixed things about ammonia-based solutions
3) Does FrogLube have good results on the Mosin?

I'll post more if I can think of them. I'm new to firearms in general, and this Mosin is my first gun, so please forgive my newbie questions.