MOA help

ascorb said:

RIP my head has exploded

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Biggfoot44 said:

ANNND , I have opposite view to impressive sounding MPBR .

Most shots will still be taken at typical distances . Extreme MPBR will have you hitting 3-5 inches high where you typically shoot. This will require significant offset in your aim , or else can result in a fringe hit , or even a miss .

I think POI should be close to POA out to distances usually fired . When shooting at long distances you will generally have a moment to think about hold over, while short to (average deer distances ) are more likely to be quick, and you instinctively place crosshairs on vital area / desired POI .

To my thinking , I want plus 1.5 or most 2.0 high , and 5 , maybe 6 inch low . Hold where you want to hit out to zero distance, and beyond until drop 1.5in or so . For drops up to 5-6in holding on spine/ top of back will still give center chest hits .

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Major03 said:

Biggfoot44, respectfully, I disagree. The whole point to MPBR is that you DON'T have to offset your aim and that POI and POA are within a set distance of your POA within distances of "what you would reasonably shoot). The idea being that +/- 3-5 inches will get you meat in the freezer provided you don't exceed ranges where the bullet drops below your acceptable variance from POA...and THEN you have to start offsetting. Or are you saying that 3-5 inches is beyond your comfort zone in terms of what's "close enough?"

Pinecone...I think we're actually in agreement. I think of 50/200 zero as a "typical" MPBR for a 55 gr .223 bullet, and where the POA = POA within a couple of inches. Your suggestion just ups the acceptable variance in POA/POI a few inches more in order to gain more yardage in range. Nothing wrong with that at all. In both cases, the goal of that zero is to minimize the consideration of bullet drop by the shooter and to be able to quickly place rounds onto target that will have "effect" out to a certain range before the shooter needs to start offsetting or adjusting his turrets. Perhaps semantics, and the 50/200 zero isn't really a MAXIMUM point blank range...but the concept is the same. Point, shoot, and expect the bullet to hit "close enough for business" to where you aimed within a set yardage. What constitutes "close enough" can be determined by the shooter's comfort level and goals.

How does one know what to set their zero at for a given bullet and velocity, within what that shooter wants to have as their acceptable trade off for variance in POA/POI and range? I know I'm preaching to choir for most here, but that's where the ballistic calculator comes in. Jump online and just plug in the bullet weight, the bullet's ballistic coefficient and velocity and you can experiment with different zero's and where that would put the round at what yardage vis a vie bullet drop. Confirm on the range. This is also an invaluable tool if you are shooting different bullet weights, especially if they vary a lot like switching up from super sonic 300 BLK to subsonic 300 BLK.

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