Boresighter arbors = death to crown?

[WhiteKnight]

Does using a boresighter with arbors basically require you to damage your crown and rifling? I don't see how you could use one without doing so. Even if you're super careful, a single slip seems disasterous (especially since all of the arbors I've seen are steel!).

 

[scythefwd]

whiteknight - depends on how hard the steel is. You might not be able to damage the bore if the bore is heat treated and the arbor is just soft steel.

 

[browningguy]

No it does not.

It is ridiculous to think that a bore sighter (usually a very soft pot metal or aluminum) arbor is harder than the barrel steel. And if someone is not capable of installing a bore arbor without damaging the bore they probably have no business owning a firearm.

 

[jerkface11]

Bore sighters are pretty pointless anyway. I can zero a gun without one as fast as you can with one.

 

[Horsemany]

Bore sighters are pretty pointless anyway. I can zero a gun without one as fast as you can with one.

Yep. And anodized aluminum does have a much higher surface hardness than steel. Why bother with a boresighter on any rifle you can pull the bolt on?

 

[fireside44]

Bore sighters are pretty pointless anyway. I can zero a gun without one as fast as you can with one.

Hear that.

That being said, a lot of guys are pent up in the city and don't have easy access to a range, in which case, a bore sighter is a plus.

 

[Horsemany]

That being said, a lot of guys are pent up in the city and don't have easy access to a range, in which case, a bore sighter is a plus.

Any distant object seen through a window will work. Even at 50 yds you'll get closer than a spud type boresighter.

 

[WhiteKnight]

Back to my original question: do spud type boresighters harm the crown?

 

[Horsemany]

Back to my original question: do spud type boresighters harm the crown?

There is no clear cut answer. It depends how much care is used in the installation of the spud. I would never put one in my bore. I'm sure there are thousands of crowns unharmed from spuds. This is not a Yes/No question. Many variables. I'd suggest you skip spuds since you cared enough to pose the question.

 

[browningguy]

Bore sighters are pretty pointless anyway. I can zero a gun without one as fast as you can with one.

Well, lets take 2 of my BAR's, or the HK SLB, and see who can get it sighted in fastest. It will take me 40-50 seconds to get the boresighter installed and the scope adjusted, then 2-3 shots to have it zeroed. It will most likely take you hours of trying to spot the rounds hitting downrange and fiddling around.

I'll admit I just take the bolt out of the action on bolt guns, but I also have quite a few scoped semi autos, and it's not so easy then. In over 45 years of shooting I have never heard of a bore being damaged by a bore sighter.

 

[panrobercik]

I find bore sighter very useful , especially with semi autos or lever .
If I lived somewhere in mountain or in the country where I can just go and pop a few rounds for sighting at any time than I would have cared less .
Since I live in the city and have to drive 4 hours to get to the range, I find $40 bore sighter very useful.
Back to the question, mine is made of aluminum and I don't see how it could damage the crown.

 

[wishin]

I refused to buy a bore sight laser since I've always done it for years without one, but my old eyes let me down when I recently boresighted my AR... took me 6 or so rounds to get on paper.