BruceB
05-12-2005, 01:58 PM
Looking up and down the list of forums here, it seems this one's the most-logical place for a thread about rifle sights.
I have a substantial number of rifles and likewise quite a few scopes, and in the past few weeks I've been really shuffling the deck by switching scopes around from rifle-to-rifle (for what seemed to be good reasons at the time).
My old Bushnell boresighter has a grid pattern in the field of view. It occurred to me that if I recorded a boresighter reading BEFORE removing a scope from a given rifle, then I MIGHT save some hassle and re-zeroing time and ammunition by adjusting the "new" scope to the same boresight reading as the removed scope.
In short, for the four rifles involved, it worked quite well. The WORST result was with my #1 Tropical in .416 Rigby. I swapped off a Bushnell Trophy 3-9x and installed a Leupold fixed 4x. The first group at 100 yards was about 5.5" high and left, but very nicely on-paper, which meant that the final zero was a snap. The other three were better, and my wife's M77 .270 (Leupold 2-7x installed in place of a Tasco 6-24x varmint model) was just about perfectly zeroed on test-firing.
Seems like this is a useful shortcut, as long as one's boresighter has some kind of calibration which allows adjusting to the same reading.
I have a substantial number of rifles and likewise quite a few scopes, and in the past few weeks I've been really shuffling the deck by switching scopes around from rifle-to-rifle (for what seemed to be good reasons at the time).
My old Bushnell boresighter has a grid pattern in the field of view. It occurred to me that if I recorded a boresighter reading BEFORE removing a scope from a given rifle, then I MIGHT save some hassle and re-zeroing time and ammunition by adjusting the "new" scope to the same boresight reading as the removed scope.
In short, for the four rifles involved, it worked quite well. The WORST result was with my #1 Tropical in .416 Rigby. I swapped off a Bushnell Trophy 3-9x and installed a Leupold fixed 4x. The first group at 100 yards was about 5.5" high and left, but very nicely on-paper, which meant that the final zero was a snap. The other three were better, and my wife's M77 .270 (Leupold 2-7x installed in place of a Tasco 6-24x varmint model) was just about perfectly zeroed on test-firing.
Seems like this is a useful shortcut, as long as one's boresighter has some kind of calibration which allows adjusting to the same reading.