No4 Mk1 - Sporter Front Sight Adjustment

Ruger 308

Member
Rating - 0%
0   0   0
Location
Calgary
After a great afternoon at the range it's obvious my No4 Mk1 sporter is shooting to the left a few inches. It has the Parker Hale blade front sight. How do you adjust this sight? Just tap it with a hammer or is there a better way?

I assume if my rifle is shooting left, I move the front sight to the left? Is that correct?
 
Yes - you want to move front sight in the opposite direction that you want the group to go - you move the rear sight in the direction that you want the group to go - up/down/left/right. In your case, you want the group to go to the right - so move the front sight to the left (or rear sight to the right) - likely will be a tiny amount - like part of width of the blade, if you are looking for only a couple inches at 100 yards. Distance to move your sight can be calculated - 100 yards is 3600 inches - have to know how far between your rear sight and front sight - is same ratio - how many inches to move at 3600 inches is same ratio as how many inches to move at distance between your sights - your answer will likely be in thousandths or hundredths of an inch.

Of the few times that I've done that, I used a brass punch or a block of wood (something non-marring) and support the barrel or barrel ramp (if it has one) well - apply taps to the base of the sight - not to the blade of the sight. Apparently, there was a gizmo that an armourer or gunsmith would use - screw pressure - a LOT more control over how far it would push that front sight in it's dovetail - but I've never owned or used one - just trial and error with flat faced "punch" to tap front sight one way or the other.

Not certain if recommended, but is possible to drive centre punch directly DOWN on the dovetail "flap" of the barrel or ramp - to "lock" the front sight in place. Not certain how your rifle behaves using different ammo - different ammo may go to different place on target - may need or want ability to re-adjust that front sight in the future - or not. Is entirely possible to "aim off" to hit something, if sights and ammo not perfectly in synch - although most of us would prefer to "sight in" and get the sights pointing to where the bullets are going. If front sight is very loose and wobbly in it's dovetail - is possible to "tighten it up" by putting "pin pricks" with centre punch - down directly onto the flat bottom of the female dovetail - if the faces on the female dovetail are not obviously bent "out".
 
Last edited:
Back
Top Bottom