I just got a Rifled Slug barral for my Moss. 535. it has the iron sights on it but i am thinking about putting a scope on it. But my main question is how much range will the gun have with 3" slugs. i know there are differant types of slugs so please teach me about slugs, range of slugs, and different types of slugs.

I use Hornady SST Sabots out of my Remington 870 with an 18in rifled barrel. I am good up to about 100 yards. I could prob make the shot farther but I'd rather make sure and kill the deer rather than injure it. Best thing you could do is go buy a couple different rounds and try them out at the range and see what does best in your gun. What will do well in ones gun may not do well in yours. As far as a scope I never saw the point on a shotgun.

the rifled barrel is 24" on my gun. with the standard 1 oz rifled slug out ofmy smoth bore did pretty well out to about 75 yds. the reason for the scope is bad eye sight.

no need for 3" shells in the 12ga., the 2-3/4" is more then enough, try different brands to see what works best in your gun, put a 3-9x40 scope on it, you should be good out to 125 yds.

Your barrel has sights on it. That tells me that you will be mounting the scope to the receiver and not the barrel, right? If that's true I don't know if you'll really gain much range by adding a scope. The best pump guns are generally those with cantilevered scope mounts. I've seen guys have lots of trouble trying to sight in pump guns with receiver mounted scopes. The barrel seems to have enough play to cause "frequent flyers".

Still may be a good idea to go to a scope, especially if your eyesight isn't the best for iron sights.

I always recommend Brenneke KO Sabots. They have worked very well for me on deer and they are cheaper than most sabots. These are actual sabot slugs. There is a KO slug that is not a sabot, so be sure to buy the sabot type if you try them.

Generally, most sabots slugs will kill deer just fine out to 100 yds. There are now quite a few that will retain enough energy to kill deer reliably out to 150-200 yds. Your effective range will be determined by your ability and the gun's accuracy.

I agree with unclenorby and it isn't just because we're both uncles. Ha ha

The cantilever slug barrels are a big step over any saddle type or similar scope mount you would put on the receiver.

Food for thought.....you don't see the rear sight on the receiver now - the sights are all a part if the barrel.

Shooting slugs out of a pump shotgun really delivers a wallop of a kick a lot more than any birdshot. I've seen lots of guys barrels become loose and they wind up with very poor accuracy from their saddle mounted scopes. When you fit a call or semi auto shotgun with different barrels you'll never get the tight fit that a rifle has their barrel fitted into the receiver.

I would recommend looking into a cantilever barrel Mossberg make some really nice ones you could probably get into one for about 200 bucks.