Maverick223
Member
I agree...but good luck in convincing them to do it...optics doesn't have a SAAMI spec. and you're not likely to be injured or killed if the scope is too high or low. 
Why don't scopes & rings come with witness marks???
- Thread starter AKElroy
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jim147
Member
While I understand the OP's point, the tolerance stack could be huge. So there is no profit in it to add a witness mark.
The receiver is drilled at the factory, the bases being brand A are made in China. The rings being brand B are made in Korea, and the scope is made in Japan.
Now the receiver is drilled slightly off, one of the bases in tightened down to the point of smashing it slightly and the rings were never really meant to fit those bases. Now the scope is being blamed for being off because the witness marks don't line up right.
Set it up the way you want it. Then learn to shoot it that way out to any distance you feel you may need to shoot.
IIRC, Tubbs cants his scopes because that is the way he shoots. I don't think I can outshoot him. I have three rifle that make tiny groups. I have only put a level on one of them.
jim
The receiver is drilled at the factory, the bases being brand A are made in China. The rings being brand B are made in Korea, and the scope is made in Japan.
Now the receiver is drilled slightly off, one of the bases in tightened down to the point of smashing it slightly and the rings were never really meant to fit those bases. Now the scope is being blamed for being off because the witness marks don't line up right.
Set it up the way you want it. Then learn to shoot it that way out to any distance you feel you may need to shoot.
IIRC, Tubbs cants his scopes because that is the way he shoots. I don't think I can outshoot him. I have three rifle that make tiny groups. I have only put a level on one of them.
jim
Uncle Mike
Member
The effects of canting is simply because of design form.
A bullet or a barrel does not know which way is up or down, or at what point it is oriented to... If you could fire a bullet from a barrel that was just 'sitting' there, in space, and this barrel had no receiver, bolt or stock, and there was no outside force acting upon it...
That barrel could be rotated around the bore center line axis, stopped at 'any' point around this axis and fired... the bullet will act the same, no matter at what point around the bore center line axis the barrel was fired.
Only the center of gravity offset(arm) at certain points(stations), the holding of the firearm by the shooter and the acting forces of recoil(force vector) will cause the act of 'canting' to have an effect on the bullet.
A bullet or a barrel does not know which way is up or down, or at what point it is oriented to... If you could fire a bullet from a barrel that was just 'sitting' there, in space, and this barrel had no receiver, bolt or stock, and there was no outside force acting upon it...
That barrel could be rotated around the bore center line axis, stopped at 'any' point around this axis and fired... the bullet will act the same, no matter at what point around the bore center line axis the barrel was fired.
Only the center of gravity offset(arm) at certain points(stations), the holding of the firearm by the shooter and the acting forces of recoil(force vector) will cause the act of 'canting' to have an effect on the bullet.
chevyforlife21
Member
good point this problem has made me take a scope off one of my guns and not even use it cuse it frusrates me too
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