shotgun scope?

Recoil resistance? Whatever the difference is it doesn't count for much if you are seated at an awkward angle practicing for turkey hunting and crawl up the stock just a wee bit. With 3" turkey loads that sucker will bite your eyebrow so hard you'll try to push it back in place by putting your hand behind your head and pushing forward. That's recoil resistance! My face staying in one place while the scope tries to recoil through it. If I'd have had a hammer or could have found a rock I'd have very unceremoniously cleaned that SOB right off the gun right then and there. As it was I took it off and gave it too some other guy who had the bright idea that a scope belongs on a shotgun.

Not trying to discourage you but if this is to mount on a shotgun, pay enough for the scope that it's got a ton of eye relief. RD

I think you're right mule - parallax seems to be about the biggest or only marketable difference.

On my Rem. 870 12 ga. slug gun I have a Bushnell Elite 3200 3-9X (really a rifle scope), and on my Winchester Super X2 3.5 in. 12 ga., I have a Leupold VX1 1-4X for turkey hunting (also a rifle scope).

I aint had no problems with them.  I figure the biggest requirement for a shotgun to be mounted with a rifle scope is finding glass with the proper eye relief just as Rocky suggested!

Mule, I think you are correct on the recoil part.  But the way scopes are built, most manufacturers use the same parts on lots of models; so they probably have the same internals.

I've gone to red dots on my shotguns.  One for turkeys and one for NY state deer season (shotguns only).  Red dots give you lots of eye relief, and great field of view (in 1x).  In addition they are great for early morning (turkeys) and late evening (deer).  I also use red dots on my x-bow for deer and turkey...same reasons.

I believe on either a x-bow, 22 rf or shotgun, you need to have a 50 yard max focus to avoid fussy crosshairs and parallax.