To get a close ballpark estimate that will give the distance the sights on your gun will need to be moved, multiply the distance between the front and rear sight times .0044.
For instance, if the distance between the front and rear sight is 15 inches, multiply 15 times .0044.
That equals .0667 or just a hair over 1/16"
If the distance between the front and rear sight is 25 inches, multiply 25 times .0044.
That equals .111 which is slightly less than 1/8".
As Mooman76 says, if you don't want to move just one sight that far, you can split the amount into something less and move the rear sight the smaller distance to the right. Then, move the front sight the remaining distance to the left. (aft looking forward).
Said another way, lets say the distance between the sights is 22 inches.
Multiplying 22 times .0044 we get .098".
That's a hair more than 3/32 but if we moved just one sight that far it would look bad.
After looking at the gun it seems moving the rear sight to the right 1/16 of an inch (.062") wouldn't look too bad so we can subtract the .062" from the .098" we need and that leaves .036".
.036" is just a hair more than 1/32 so we decide to move the sight 1/32" to the left.
Give it a try. I think you'll be pleased. :grin:
Oh. For folks wondering, that .0044 number came about by dividing the distance we want the shot to move at the target (4 inches) by the distance to the target (25 yards = 75 feet = 900 inches).
That looks like 4/900 = .0044
If the range or the distance we want the shot to move are not 4 inches at 25 yards, the answer will be something different.