I agree I'm not sure it's worth the effort. Unless you have loose scope bases, bad scope or other problems that jug of 409 will sight in your rifle and still give you more than enough for a few hunts (30 rounds or so). Should take a couple of rounds at 25 to get close, 4-6 @ 50 to get closer, 10 @ 100 to fine tune. I shoot a bunch so a jug don't last me at all but if all you want to do is sight in and hunt it's plenty. Now 56 gr(by weight) is = to 80 by volume and BH web sight says that should give you 1700 MOL. I shoot a lot at 65 by weight and find it much more pleasent to shoot that any more than that