36yd zero

[Exo]

alright stupid flippin question...i think i know the answer...but wanted someone with more knowledge to verify.

took a patrol rifle course with my AR, instructor said: "36yd zero has an "effective combat range" of 300yds with irons or a red dot" ok, i understand that...

will this same "zero" (36yard) work on magnified scopes as well. I have a bushnell laying around and was thinking perfect for small game or plinking out to about 300 yards. I would of course get the zero at 36 and then verify at my intended ranges, but is this train of thought correct?

Thanks...

 

[Wheres-Waldo]

Re: 36yd zero

This is 110% completely dependent on your trajectory, and your trajectory is dependent on a lot of variables.

But I'll answer you question specifically... If your trajectory was so that a 36 yd zero also printed at 300 yds, then yes, regardless of your optic, you will keep that same trajectory.

Don't think you can zero specifically at 36 yards and be spot on at 300 though, or your in for some ass-pain.

Edit To Add: Does effective combat range = grazing fire?

 

[Exo]

Re: 36yd zero

yeah, I know its just going to get it on target (not pinpoint accuracy)...but thanks for this...i was thinking regardless of whats on top of the rifle, the bullet is going to do the same thing.

"effective combat range" = shots on target (center mass)

Travis Haley does a fantastic job of showing this:

Adaptive Carbine <-- click link

 

[patsim]

Re: 36yd zero

Cool video link. Good information; well presented.

 

[The Mechanic]

Re: 36yd zero

Zero for 300. Shoot close 20 to 50 until you hit the bull. You now have your close range zero.

your welcome.

 

[Postal0311]

Re: 36yd zero

The 36 yard zero is meant for a 300 yard zero when sighting in M16A2 and M16A4 rifles firing M855.

Other setups may find the 36 yard zero close, however other zeros may be better for different loads and firearms.

 

[Grason]

Re: 36yd zero

great video, that was very informative.

 

[jasonk]

Re: 36yd zero

That was a great video, really helps to see it all laid out like that.

 

[K_4c]

Re: 36yd zero

I've been running this zero on my T1 and a couple 1-4X's.... hasn't let me down yet.

 

[Chiller]

Re: 36yd zero

Useful info. Has me rethinking my carbine

 

[Skeld1]

Re: 36yd zero

I recently figured this out myself as well that this is how the military usually zeroes rifles...makes sense, with iron sights, you won't be precise enough for zeroing at long distance I wouldn't think? I did a ballistic chart on a .308 and came up with roughly 35 yards for a 200 yard zero. Close enough for my red dot sighted gun that I probably won't be firing at anything much over 100 yards.

 

[Yama Arashi]

Re: 36yd zero

I greatly prefer the 36 yard zero for the 7.62/.308 using irons or a red dot optic.

Contingent on the particular load of course, from 147gr up to 175gr, the trajectory is 3.7" high at the most, and 7.1" at the lowest, at/out to 300 yards.

I still prefer the 50 zero for the 5.56/223