I guess I start things off for you. First you have a real nice rifle in the model 70. The 225 is really designed for varmints as it shoots a 5o-60 gr bullet at 3500 fps. Can it kill a deer the simple answer is yes, is it something most would use for deer hunting nope. Brass for this round I believe has been discontinued for some time now, so you need to either locate used brass to reload and also purchase everything you come across already loaded. I love the past/forgotten rifles and in obsolete calibers and you have a rare one that's become nearly extinct. Glad it's been handed down through the family! I'd invest in a more powerful caliber for deer hunting starting with 243, 300 sav, 270 win, 308, 30-06 280 rem. ect you know all the more traditional ones. Don't ever sell your 225, if however, something ever comes up let me know! Good hunting to you!