I have a mossberg 500c with a slug barrel and reload as well as cast my own bullets. I have worked up loads where a three shot group will come close to touching each other at 100 yards. All is vertical with little off in horizontal. They pack a wallop. ( on the butt end at least!)
I personally wouldn't use it farther than 100 yards, not because of accuracy but because of dwindling energy. Others have used it farther, just not for me.
The only factory ammo I could get to shoot worth a darn was Copper Solids. I cannot even find them any more.
My advice would be to spend some time at the range finding a factory round that shoots well and try to keep your shots under 100 yards.
In the interest of full disclosure, I have never actually shot a deer with it. All of my experience has been at the range. I like to have plenty of ammo around for each gun I own so I spend a lot of time at the range and a lot of time at the bench. Plus it is fun finding these loads that you gun likes.
My .02 cents worth.
Last edited by Crawdaddy; 10-02-2011 at 08:16 PM.