Only shoot bird shot out of the 835 standard barrel. The barrel is overbored and ANY slugs have enough play in there to where they can cause a barrel obstruction and blow up your gun. Read your manual to double check. The model 500 will handle slugs just fine through the smooth bore.

You should buy a slug barrel for shooting foster or sabot type slugs out of your 835. I bought one used for $85 from B&M specialties. Dominic is the guy to talk to. Their number is 317-291-6558. I bought three used barrels from them for different guns, all just fine.

Expect accuracy with open sights to be within the 2-3" range at 75 yards. Not outstanding, but certainly good enough to get the job done.