Situation: New to me (inherited from my dad in 1991, I've never fired it) .22-250 Remington 700 Varmint mid-'80s vintage, new Riton RT-S Mod 5 GEN2 4-16x50 scope, WW760 powder, 500 pieces of new Jag brass plus ~200 pieces of assorted brass, Federal primers, 55 grain Nosler Varmagedden bullets. I...