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View Full Version : Bore-Sighting a Bolt-Action Rifle



TAREEN
21-07-2009, 09:32 AM
Bore sighting is a popular technique that helps set the scope "in the ball park" very quickly. Still one need to fire a few shots to get sighted in perfectly, but it will always adjust the bullet impact within a few inches or less. The person who demonstrated this process used a 25 yard pistol target located 100 yards away. This provides the perfect view for best results.
http://www.postimage.org/aV1ulxCJ.jpg (http://www.postimage.org/)
Start by removing the bolt, then using a good rest, position your rifle so that you can look through the barrel and see the target. Be sure that your rifle doesn't move after it is positioned.

Remove your bolt, and position your rifle so that the target
appears centered when looking through your barrel.


http://img11.imageshack.us/img11/9248/29564866.jpg (http://www.postimage.org/)

Bore sighting is an easy preliminary method of sighting in that doesn't require any special equipment. It's an easy procedure, and all you need is a rest that can hold your rifle steady, while you make the scope adjustments. I've seen many new shooters that would have saved lots of time and ammunition, if they just knew how to bore sight their rifle.


http://img31.imageshack.us/img31/3015/74587351.jpg (http://www.postimage.org/)
The crosshairs might look like this . . . . so the steps to adjust this difference is as follows:

Now that your barrel is perfectly lined up with the target, you know that your crosshairs also need to be centered. However, this is where shooters often get confused. You don't want to move the crosshairs LOW and LEFT according to the turret markings, because that would move your bullet impact right off the target.

The markings on scope turrets indicate the direction of bullet impact, not the direction of crosshair movement. In this case, you need to adjust your scope UP and RIGHT according to the turret markings, until the crosshairs are centered on the pistol target. Remember to not move your rifle at all when making these adjustments.

Have fun.

Thanx to Larry W.

Abu Al Hawl
21-07-2009, 10:20 AM
Tareen Bhai, good one, i will try this technique soon

Sohail
21-07-2009, 05:36 PM
tareen: you have righlty enunicated, nowadays i daily bring out my scoped rifles and try to aim with different techniques. good points

regards

MIdreesTaj
21-07-2009, 07:39 PM
bore sighting a newly fitted scope is a must thing on boltaction rifles. saves alot of time and fatigue and u get ur hits at paper quickly without wasting a lot of ammo..

Abu Al Hawl
21-07-2009, 09:23 PM
sohail you mean rightly *Enunciated*;)

TAREEN
22-07-2009, 09:12 PM
This technique is simple and useful that last time when I changed scope on my 22lr and bore-sighted it, it was accurate on 3x6 inch target @ about 25 yds. Minor tweaking and it was as accurate on 60 yds.

MIdreesTaj
22-07-2009, 09:27 PM
This technique is simple and useful that last time when I changed scope on my 22lr and bore-sighted it, it was accurate on 3x6 inch target @ about 25 yds. Minor tweaking and it was as accurate on 60 yds.

it is advised to set the aim 1" to 1.25 inch low to bullseye @ 25 yards, due to bullet trajectory, mostly in 7mm class rifles.. they hit approximately dead on 150 to 200 yards.. thats for people who dont have much space to zero in their scopes ..

TAREEN
22-07-2009, 09:56 PM
Brother i didn't say it was a bullseye @ 25yds. It was on the target and thats what was required initially.

Moreover for 22lr the trajectory compensation is usually adjusted at 50 yds for the bullet to hit at 1 - 1.5" above bullseye so that the bullet travels within +2 to -2" from the line of sight throughout 90 yds of its best travel path.

Turumti
25-07-2009, 03:40 AM
Brother i didn't say it was a bullseye @ 25yds. It was on the target and thats what was required initially.

Moreover for 22lr the trajectory compensation is usually adjusted at 50 yds for the bullet to hit at 1 - 1.5" above bullseye so that the bullet travels within +2 to -2" from the line of sight throughout 90 yds of its best travel path.


@TAreen:

Excellent advice. Its best to zero scopes using the method you have advised. Its also known as the MPBR mehtod.

TAREEN
25-07-2009, 11:15 AM
@Turumti.........Thanx for the reinforcement. ;)