Does anyone have experience with a red dot sight, or similar on a shotgun?
If so, what would be the best type to use and how do you mount such a thing on the rib of your gun?
I intend to use this for hunting driven wild boar in (dense) cover at close distances with slugs.

All the turkey hunting forums have extensive discussions of these sights. An example is the NWTF site. You will also find the holosight discussed.

As for me, I put a Leupold 1X4 scope on my turkey gun. At the 1X setting, it has a 75 ft field of view.

Eotech holographic sights are definitely worth a look. They allow both eyes open shooting and they are about the fastest sights I have ever seen for acquiring a target no matter what your head position may be.

All the guys around here use Aimpoints on their 12 gauge guns.I use a Pentax 2X LER pistol scope set up in the forward position. Hell , I think I even invented it before Jeff Cooper !!! I've been running that set up since the early 70's.

reindeer,

What type of shotgun, single barrel pump/semi-auto, O/U or S/S?

Since you mentioned the rib I am thinking you do not want to mount on the receiver?

I have an older Richland 12 ga SxS. I had it drilled & tapped for a basic Weaver Mount. I mounted a BSA 42mm red dot on it for Turkey and Coyotes. I also covered it with Camo tape.

It kicks the crap out of me with 2 3/4" turkey loads and the red dot has not busted yet.

My nine year old shot his first turkey last weekend. It was 17 pounds, had an 8.75" beard and 3/4" spurs. He is hooked. I was about to stroke out while he was sighting in on the bird. I rigged him up a remington 1100, with a 21 " barrel, super full choke, nikon monarch red dot in a bsquare mount (he is right handed and left eye dominate), and a synthetic youth stock. He was shooting off my long homemade oak shooting sticks and smacked the bird at 31.5 yards with a 2 3/4" load of #6s. I shot a 9.75 inch 21 lb. bird with 1 3/8 spurs at 15 yards with it. I was impressed.

I have a Remington 870 that I built in the 1980's
with a Hastings rifled barrel (before they offered a cantilever mount) and an Aimpoint2000.

I consider a scout mounted aimpoint the ultimate tool for jumping deer out of their beds in dense spruce, laurel and rhododendron thickets.

For wild boar? probably ideal for that too.

AllanD

I have a 20" 870 with an old Pro Point on a
B-Square recevier mount. It works very well.