A 29-3 does not have the endurance pkg which includes additional heat treatment to the yoke for additional strength . The endurance pkg included quite a few changes . Will your Smith take shooting those 300 grainers at full throttle . Well -- for a short while . I just wouldn't make a habit of shooting them only . A 240gr swc cast bullet over 20 grs of 2400 , 22 grs of H110 or 22 grs of IMR 4227 will be all you need for sure . 10 grs of Unique will get you close to what you need for power if that's the only powder you have . You should not run out of rear sight adjustment with the above loads . I understand your dilemma , I have ran into a few " ornery critters " a time or two in the past . , Regards Paul
Last edited by cowboy4evr; 02-03-2020 at 10:23 AM.
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