Quote:
Originally Posted by Engineer1911
Do you calibrate your watch or car speedometer? Sometimes you have to live with "close enough". It can be tough.
Upon further thought, just read the directions.
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Find the Cop that gave you your last speeding ticket and says we have it on radar. Ask him to go to the range with you and point his radar gun at the bullet.
I use a 22 LR. If it is close to what the box says between 500 and 1200 fps I guess its accurate.
Good question though, I guess I just go by what the manual says it should be (test gun results not a test barrel of 12" or something
) and if it is close I am OK with it.