Lil red...If ya look at a bore that has shot a fair amount of the old style slugs..without cleaning after...you can often see a streaky area in the choke region. A good bore brushing with a lead and copper solvent will clean it right up...and it'll be good as new again. Might be a way for ya to buy an older shotgun a bit cheaper next time.. ask if it has shot slugs...and then act a little put off if they say yes...but buy it anyway if it is cheaper
Whoo Hooo if ya get it a good bit cheaper.
Now as to shooting slugs in the woods on running deer. The average shooter thinks he is shooting a rifle when using slugs...and of course he will usually shut one eye like they think they should... The wrong way to shoot a shotgun slug on a running animal. Shoot it like a shotgun...both eyes open and swing the gun like you are shooting shot. The key is to not look at the whole deer. Look at where ya want to hit it..like behind the shoulder. If you shoot a shotgun at all well, Your slug will go where you look. Buckshot too. The problem I have with buckshot isn't the buckshot itself..it is the shooter. Most will shoot at too long ranges. And to tell ya the truth..60 yds is too far for clean kills consistently with 00 Buck. You need multiple hits to kill cleanly at that range...and most buck shot loads just won't do it.. And there is an awful lot of brush and trees in the way of that load of pellets..so you have a better chance of hitting a deer with one or two pellets...but not too much chance of killing with such a hit. Much better chances at 40 yds and under. Not advocating stopping the use of Buckshot..just being practical in it's use. And I know that deer have been killed at much longer ranges with buckshot. Heck I saw a deer killed at a range of almost 400 yds with a 410 slug. That deer had almost as much chance of getting hit by lightning as being killed by that tiny little slug.