I just built my first AR-pistol. I'm still trying to get it to the range but, before I go what is the best range to zero 10.5? Is it still the 50? Thanks!
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I just built my first AR-pistol. I'm still trying to get it to the range but, before I go what is the best range to zero 10.5? Is it still the 50? Thanks!
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I still use the 50yd IBSZ for my 10.5 inchers.
11C2P '83-'87
Airborne Infantry
I use a 4" vital, MPBR zero with stout and chronographed, 55 grain reloads for all of my rifles, regardless of barrel length. (10.3 - 14.5 - 16.5)
Even when shooting 77 grain SMK's I get good vital zone hits at most distances without issue.
YMMV
Last edited by HKGuns; 11-23-14 at 11:15.
Perfect that's what I was thinking.
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Thank you!
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Actually, you don't.
The second point of intersection is generally way short of 200 with such short barrels.
Even with M193, your going to be about an inch high at 100, and 5 inches low at 200, which to me, sounds more like a 100 meter zero than the Santoz IBZ.
Because of the low velocities of 10.3-11.5 inch 5.56 guns they tend to defy convention on zeroing concepts. If you want a 200 zero, I recommend shooting at 200, as a 50 is actually closer to a 100.
I try for 50 or less. I can't think of many real world civilian self-defense situations where I'm going to need to take a 100 yd shot. That's usually called murder. I can always change it up later, but I like to keep it close. I can always adapt by using Kentucky elevation.
Not a good topic to explain in a post. See F2S response for the short answer. An MPBR zero won't necessarily work for everyone. I use it primarily because I do a lot of reloading with a lot of different bullets and charges and it provides a known constant that will be really close at most reasonable distances with a variety of cartridges.
Google Maximum Point Blank Zero for an understanding of what I am talking about. It is typically used by hunters with a grasp of ballistics and the cartridges they are shooting.
Here is a good start for you.
http://www.rmvh.com/MPBR.htm
Last edited by HKGuns; 11-23-14 at 14:25.
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