Gentlemen, I purchased a highwall on Friday that has been lined to 38-55. It shot about 8" high at 15 yards so I changed the front sight to an MVA Winchester style that I had and I am still 6" high at 100 yards. The MVA sets at about .375 to the center of the aperature from the barrel flat and the rear sight is a Marbles that sets about 2.062" off the tang to the center of the aperature. The Marbles is turned all the way in so there is no adjustment left. Any ideas as to what I need to do? This is going to be a hunting rifle and appears to be sort of a parts gun. Thanks Thebear

It's best to do your figuring with a pencil rather than gunsmith an expensive sight or rifle blindly

I don't see your sight radius which you need to figure out how much to raise the front sight.  For 36 inch sight radius .001 is about 1 moa so .008 would make the correction.

I would suspect your sight radius is less so less that .008 would make it zero.

You can go higher but not lower so make any mistake too high. (the rear sight will correct if you go too high)

If you don't want to go the calcuation route just duct tape a higher front sight on out or some easy worked materal. Piece of plastic or cardbord. Then cut it down until she zeros then measure the height from the bottom of the dovetail so you know what you need .

Once you have the exact height required in hand it's simpler to mail order sights.

Boats

Boats,

You're right as far as technique, but you're off by one decimal place. 1 inch at 100 yards is .010 inch at a 36 inch sight radius.

Nice sights.  Anyone know where these can be had that will fit in the 7/16 dovetails of Stevens rifles?  Or to modify them so they will fit?  2520

Gentlemen;
I know that this sounds rather "crude" but have you thought about merely epoxying a shim in place (could also use soft solder). If it is done in a "workmanlike" manner should work just fine.

Dale53

Tried solder with mixed results.  Shims also but never thought about adhesives or epoxy.  These have promise.  Thanks for the advise.  2520

I have some front sights that take Lyman apertures and fit a 7/16" dovetail. They go in without hammering, have a set screw to install and for coarse adjustments.  I had front and rear sights made to fit Sharps rifles, think they're great but few ever sold. Fronts are $35, there's a picture on AuctionArms.com, where I'm trying to sell the damn things and get my money back.
joe b.