Hunter501, I hate to be the bearer of what may be bad news, but thought it should be brought to your attention that Mossberg advises against using slugs in their model 835 as the barrel is over-bored to 10 gauge specs and claim the slug may wobble and cause damage to it. Buckshot does work fine though and a few ammo makers offer 00 buck in 3 1/2" with 18 pellets and a powerful kick!