When my dad passed away 2 1/2 years ago, I got his old Savage 840 bolt action rifle in 30-30 Win. We're dealing with a box magazine instead of a tube magazine, so I'm wanting to do a little experimenting and load some 150 gr. Hornady SST bullets. I want to play with the charge a little (keeping everything safe, of course) just to see how it performs. Anybody else done anything like this?