RE: best brush gun
I use either a Marlin .44 mag rancher lever action with open sights, or a 7.62x39mm SKS with open sights and a folding stock. .44 mag is short light, doesn't kick too bad, lots of energy with heavy bullet to go through little branches and stuff in the way. SKS is semiauto and quick on relocation. 7.62 is a .30 cal but it's short case, supped up shells can almost match my .30-06, nice short gun, inexspensive ammo and gun, folding stock is great, it's durable, and really good on second shots even though it muzzle hops a bit, the sights are made for relocating targets.