Hello to all:

I had a formula for mathmatically determing the front sight height at a particular range. It required you to measure the distance between the front and rear sights and know how high or low you were hitting.

It was a very usefull formula to use when filing an existing sight or purchasing a new one.

I think it was in Muzzle Blasts magazine.

I have lost it. Does anyone have it?

Thanks, Jim

The formula that I have used is to measure the space between the front and rear sight and divide that into the distance to the target. So if it is 24 inches between the sights and the target is set up at 50 yards (150 ft. divided by 2 ft = 75) each change in the sights would be magnified 75 times at the target. So 1/10 inch change in the height of the sight would equal 7 1/2 inches on the target. Hope this helps. All the best...
Gil

The formula that I have used is to measure the space between the front and rear sight and divide that into the distance to the target. So if it is 24 inches between the sights and the target is set up at 50 yards (150 ft. divided by 2 ft = 75) each change in the sights would be magnified 75 times at the target. So 1/10 inch change in the height of the sight would equal 7 1/2 inches on the target. Hope this helps. All the best...
Gil

Gil:

Thanks for the info.

Jim

I've seen a chart somewhere- I think in Brownells's book Gunsmith Kinks (can't recall which volume). Anyway, it was a reprint from Marble's Sight Company, I believe. Might try Marbles website?

The Brownells catalog has a chart for that.