Any tool to help zero the scope?

Bushnell has an inexpensive bore sighter you simply slip into the end of the barrel with a collet.

Personally, I prefer to remove the bolt where possible, and simply bore sight it on a plumb string. Helps to get the scope reticle perfectly vertical after leveling the gun. After that, its time at the range anyhow.
 
But regular bore sighter only works for the bolt action, doesn't it? If I have a semi auto like M305, then it won't work. But the laser sighter will do the job for both of them, right? Please correct me if i'm wrong.

BTW, after using the sighter, usually how much more click need to be adjusted?
 
IF the spud will fit the bore and the flashider, a bore sighter would work with a M305.
I rarely use a bore sighter. Don't care for the little sharp spring fingers tight against the bore. But I did use one on my Ruger .44 the other day. First shots were over a foot high at 100. Was using a large target backer, so it caught the rounds. I would never assume that sights aligned using a bore sighter are any more than approximately zeroed. The alignment achieved with a bore sighter has little to do with actually firing the rifle.
 
Regular piece of 8x11 scrap paper with a small X mark from a pen, costs a few cents. Set it up about 10-20 feet in front of your gun, fire 2 rounds, adjust your scope. Then set up a proper target at the range you want your firearm zeroed for, fire 2 rounds, look where they hit, fine tune your scope, fire 2 more rounds for confirmation, you're done.
 
It is not possible to "Zero" a rifle with an external aid. You can "Bore site" but you can not zero. The lazer ones are OK but not good. The best in my experience is the Bushnell that puta an adjustable spiget into the muzzle end and adjusts for the correct bore diameter. These seem to centre better than the ones with the little spring thingy on them that have a large # of spigets in the box each for a partictular calibre.
Scott
 
I have a Leopold bore sighter that sticks on the end of the barrel with a magnet. Doesn't matter how high, it works.
 
If you are trying to bore sight a bolt action you can take out the bolt and look through the bore at a target while the rifle is supported then look through the scope and adjust. aim throught the bore at a 25 yard mark and you should be on paper at 200. If you can't see though the bore due to action type use the paper method mentioned above and save the bore sight device money to buy bullets!
With the looking through the bore at a 25 yd mark method I have a pile of confidence. once your sighted look throught the bore at a known distance and the scope to come up with a refrence sight picture, that allows you to "check your zero" in the field or camp (after a fall etc) with out firing a shot.
 
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Regular piece of 8x11 scrap paper with a small X mark from a pen, costs a few cents. Set it up about 10-20 feet in front of your gun, fire 2 rounds, adjust your scope. Then set up a proper target at the range you want your firearm zeroed for, fire 2 rounds, look where they hit, fine tune your scope, fire 2 more rounds for confirmation, you're done.

I've used a bore sighter for years, but I have to say that I agree with Rob. Getting it on paper from close up and then moving the target out further really is the best way. - dan
 
you use the expandable largest spud and it'll fit inside the flashider on the 305-yowever, i found that there wasn't enough hieght on the rangefinder itself to see it in the scope
 
you dont need a laser boresighter for bolt actions, or anything you can sight down the bore on.
like grizzlypeg said, first use a plumb line to get the scope reticle perfectly vertical. (i use a plus sign i made on my wall with a pen and a level for this, heh).

remove the bolt.
then lay the gun out on a stable surface so it isnt moving. can be a gun vise or just on stable bags.
look down the bore and center it on something in the distance, like your target, a pumpkin in a field, a bale of hay, whatever.

now, without moving the rifle look through the scope and zero it on the target. you can look back and forth between the bore and scope at the target till theyre both centred. this will easily get it on paper at 50 yards (or further). then just sight in as normal.
 
Leupold's Magnetic Bore Sighter is easy to use and will work with any firearm, even ones with muzzle brakes and flash hiders.
 
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