I inherited a S&W 45 from my grandpa. I also got 2 boxes of OLD bullets w/ it, they're Winchester .45 Auto Rim Lead (according to the box). Are these OK to use for target practice? Or should I buy new? Just seems a waist not to use them, I have about 80 or more. These were stored in a dry area and the bullets look fine w/ no visible corrosion, just FYI.