Bore Sighter Arbor Advice Needed

capecod

October 05, 2002 13:13

I recently purchased a new BSA Boresighter complete with a considerable selection of arbors. I'm very pleased with it but the one problem I have is that the arbors do not seem to have the strength to hold the boresighter firmly in place. There's a brass or copper spring type mechanism on each arbor to secure the arbor inside the barrel but it seems the boresighter itself is so heavy that it will cause the arbor to shift within the barrel and after several adjustments my blood pressure is also on the move - upwards. Seriously - is there anyway I can make the arbors more secure within the barrel to keep the boresighter from moving. Any tricks of the trade would be appreciated.
Thanks
John
John

John in PA
jmknaut@juno.com

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  groundhog devastation

  October 05, 2002 18:09

  Yea, Why don't you spread the spring out as far as it will go then slide it into the bore with force if necesarry! That does wonders for the lands in the barrel! Ask competition shooters if they place things in the muzzle of their match barrels!! Probably opened another can of worms with that reply!!! GHD

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  capecod

  October 05, 2002 18:21

  Thanks for the help....
  
  John in PA
  jmknaut@juno.com

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  Guns & Glass

  October 06, 2002 10:13

  That style can put scratches in the bore. Some tips.
  Be careful ,and gentle.
  >Keep the arbor clean, especially the spring area.
  >Lube it before inserting.
  >Clean muzzle end before insertion.
  >Do not twist!! It might move a little as you insert it (hooked a groove).
  >Gently push in till bore sight base touches muzzle. Sometimes it will keep it from tilting.
  >Upon insertion and vertical squaring, tape the bore sighter to the barrel. When done remove tape carefully, and clean up with oil.
  
  Also, might check the OD of the spud. Can be undersized.
  
  Happy Bullet Holes!
  
  Edited by - Guns & Glass on 10/07/2002 10:07:19

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  daddo

  October 06, 2002 10:26

  Don't know if you have a bolt action or not, but if you remove the bolt and look down the barrel at 25 yards at your target and set the scope for 1" below that, it should get you on paper at 100 yards. (*You can check ballisics on that rifle to get the real rise.)
  For a semi., line up the barrel on the target (as if it has iron sights) at 25 yards (using a gun holder w/ clamps) and when you hit zero on your target, set the scope 1" below this, and this should get you on paper at 100 yds. I hope this has helped.
  I've never used a boresight before and this method has always worked well for me.

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  capecod

  October 06, 2002 15:38

  Thanks guys - I really appreciate the info. I learn something everyday on this forum - now I wonder how I ever did without it.
  Thanks Again
  John
  
  John in PA
  jmknaut@juno.com

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