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The 100 yard elevation zero is made up of two parts: Compensation for bullet drop from muzzle to 100 yards; and the mechanical offset of the line of sight over the line of bore. With a .308 the bullet drop is about 2.7 inches. Assuming a sight height of 1 3/4 inches, at 100 yards that's about 1.7 MOA. Add them up: 4.3 MOA.
Feb 11, 2010. 797. 10. Mar 18, 2014. #14. shovelstrokeed said: Get a transit and a pole marked with 6' between two marks When the difference between the 2 marks is 1.145 degrees, you are 300 feet away. Same idea, and you already have a measuring device on your rifle, or SHOULD. Ten mils is 36" at 100 yards.
A 100 yard zero only needs about 5 minutes to reach out to 300 yds with a 20 inch barrel. The 100 zero is easy to adjust and calculate out to 1,000 yds - I have all the numbers memorized for those ranges. Any decent scope will have enough adjustment from 100 yds to 600 yards or even 1,000 yards (especially with a 20MOA base).
Many hunters zero at 200 because the drop is less at 100 yards than it would be if zeroed at 100 and shooting at 200 yards. For example, a .308 with a 26" barrel shooting 2745 fps with a 100 yard zero will drop 3.1" at 200 yards. The same rifle with a 200 zero will have 1.6" of drop at 100 yards. The thought behind this is that if zeroed at 200 ...
Zero at 100-yards or 100-meters (~109-yards), it really doesn't matter for most CF rifle cartridges as it won't make a difference. The drop at 100 +/- 9-yards is a very small insignificant amount, which is not noticable. My backyard range just happens to line up perfectly at 100-meters because of the terrain, and that's what I zero at.
Out to 100 from a close pistol target. You're making me 2nd guess it now... will have to verify. I'm zeroed with cci SV (and its pretty close with other similar rounds, such as sk std+ etc) at 50 yards. I'm certain at 75 its .9 and at 100 its 2.1. Thought I might be going crazy for a second and checked my dope lol.
If your scope is IPHY adjustments- there is a quick equation. Distance/100 * adjustment value = total inches of adjustment at given distance. Example- 530 yards, Scope with 1/4 adjustments. 5.3 * 1/4 = 1.325" @ 530 yards. 875 yards, Scope with 1/4 adjustments.
There are several LOW quality .22LR rifles that can shoot MOA out to 100 yards, real competition .22 rifles can do much better. I've seen several low budget combinations make it, cheapest one I know of is a Norinco JW-15 with BSA 36x scope in Leapers 1-piece rings/base shooting Wolf Extra. (Probably less $150-200 invested in that whole kit at ...
Nov 21, 2012. #17. Re: The 1,000 yard .22 rimfire challenge? A variation of 3 yards in distance or 9 fps in velocity cause over a 30" shift in theoretical point of impact at that distance. And that is on top of the other host of problems you have - one of which it finding a 5.8 Degree base.
Moved to 100 yards, took some shots, and made some fine tuning adjustments - and hit the bullseye. I left it there and moved back another 100 yards, expecting to shoot low by about 1" if I didn't move the turret (calculator said to move up 0.34 mrads when moving to 200 yards).