Gary Reeder
the length is what the problem is. I would think any
Friday, February 28, 2020, 11:00

cartridge the length of the 357, 41 or 44 mag would be ok but you would be very limited on what bullets you can use.
In the pics the stainless cylinder is the Super Blackhawk size while the blued cylinder is the mid frame size.

In the pics with the bullet noses showing a standard lightweight bullet in 45 Long Colt the bullet is fairly close to the end of the stainless cylinder while a 250 grain bullet comes almost to the end of the cylinder.

In the mid frame a standard fairly long nose 158 grain bullet in 357 mag comes all the way to the end, so some bullets wouldn't work at all.