I mean i don't know specifically I know its so close the deer wouldn't know the difference and with a lot less powder. I've already ordered a scope to try that'll go on my 357 Mag till I get the max and I believe I figured out why my Mag was stringing seeing as the rear scope mount was so lose the locking piece would move when I touched it and the Leopold on my 45/70 barrel suffered a whack at some point apparently and the adjustment cap won't come off so I got a tool and gently turned it and the whole dang turret unscrewed so im not using it soon lol