Will this peeprib work on a factory 7mm-08 barrel with factory front sights.

I'd like to have a back up irons with a scope if possible.

Probably could use scope rings that have irons built into the top half of the ring. Use to be rings available that had iron sights like this. Not sure they are still available.

That peep sight you've linked would probably do the trick as well.

It look as though it sits up pretty high.

I think the sight itself is made for the muzzle loader barrels, but you can get an adjustable aperture for it.

I see where your thought in this is. You want to have Irons in case something happens to your scope. (If I am in left field let me know.)

I wonder if they make a rear sight that will clamp on your weaver style base? Take the scope off, put the irons on...

Your principal is sound. If you miss a shot while hunting and loose all confidence in your set up it is nice having the ability to change and know what you have in your hands is usable.

Have you thought about having a second scope, or an extra scoped set up, in case something happens to your primary?

Another thought in a different direction. They use to make a set of rings that had a set of iron sights on top of the rings them self's. Once you found your load, you would file in the rear groove and then file down the front/rear to acquire elevation. I am just talking out loud here...

Duane