I am extremely new to reloading, and would like to get into loading shot shells first. I especially want to load .410 because what they cost is insane. I'm interested in 20 and 12 as well, but just more so with .410 due to economics. One thing I've been exploring is different ways to do slugs. I'm not talking anything like Demolition Ranch, but just something different than the hollow core lead slugs. I can't find any info on people trying to load pistol projectiles as slugs. Now of course safety is my #1 concern and would always get exact measurements of the muzzle diameter and go under that for projectiles. For example, my M6 Scout with a full choke measures right at .375 at the muzzle. Could you safely load a cast lead .357 or similar bullet and fire it (or even jacketed)? I know tumbling is a concern, but could that be a danger of happening within the barrel due to the bigger gap that exists prior to the choke constriction? Is this whole concept something that should only even be attempted with a cylinder bore? Alternatively, what about round balls? Obviously there is buckshot that functions just fine, but does spread. I believe 000 buck is a .36 ball, would a single ball perform differently than a stack of 3 or 4? For that same barrel, how could a .375 lead round ball (pretty sure those exist for muzzleloaders) be used? How about steel? I am able to roll a .36 steel slingshot ammo ball through the barrel with no problem at all, but could it bang around and damage the barrel when fired? I'm sure I'm not the first person to think of this and I image if some of this worked very well people would already be doing it. I'd love to hear any thoughts on the above, or other similar ideas. Thanks.