Normally I would agree 100% with limiting the distance with the maxi. I also limit my shots with it to 125-150 from the muzzle... BUT, IF I needed to use the Maxi for 200 to say 225 yards, I would absolutely, load it with the XTP FP bullet in 158g with the highest vel with accuracy I could load to. With this, I would be very confident in bringing home the venison.
1:20 huh... Wow thats quite a a bit slower than the "norm"... Wonder what was his thinking... As we know the gen accepted standard is 1:14, but some makers use 1:18 with others 1:14 or even 1:12! Also, we all know the standard 357 mag loading is 158 grains...
Even the factory chambered Maximums reflect the same twists with 1:14, 1:16 and 1:18 for Dan Wesson.
Please start a range report once you get to shooting it!