So far as I know .45 is the largest commercially available caliber ammunition available. Muskets are like antique cars they would fall in an entirely different status and the rules would be unique to them.Any line would be arbitrary but the next step up from a .45 is a ma duce and that is over the top.gun - no fully automatic weapons nor any with a caliber over .45
This is quite ignorant. I have a .338 caliber rifle that will drop a polar bear in one shot, or a Cape buffalo. So why the arbitrary .45 caliber limit, please explain.
Why? Is this just your personal opinion or do you have some logical reasoning behind this? Black powder musket balls can be .50 to .70 caliber.