I have been happy with my 10 stack on 35 whelen. i have called and talk to CS a couple times and they seem to have good familiarity with the product. Asked about a 45 cal can and they said, maybe, but only rifle not pistol. That was the hangup, they didnt want people to buy a big 45 cal rifle can then use it for pistols or smaller calibers as it wouldn’t work well. i have a banish 46 in jail, but would like something lighter for 45-70.I have very high hopes for my 10 stack w/ 3" reflex. If I like it that much, it might be worth getting another one in the 6 or 8 stack configuration. Fingers crossed that any day now I will get that email.