Home Forums Hunting & Shooting Long Range Hunting Smaller dispersion at longer range than at close range.

First, some background:
There's a common discussion topic based on the observation that some rifles seem to shoot smaller angular groups at longer ranges, for example, 1 inch groups at 100 yards, and also 1 inch groups at 200 yards. This could also be expressed as 1 MOA at 100, and 1/2 MOA at 200. I'll refer to this as non-liner dispersion, which is anytime a rifle groups smaller MOA at farther range.

We have a logical dilemma: "we haven't observed non-linear dispersion in any of the testing that we've done, but we still can't claim with certainty that it doesn't happen because we haven't tested every possible rifle and combination". There are still many shooters swearing they see it on a regular basis.

It's disappointing that we haven't reached a more decisive conclusion, but I'm not giving up yet. So what's the next step? Well, certainly it must be something dramatic, and involve live fire! So here it is.

The Applied Ballistics 'Shoot Thru Target' Challange
I'm inviting any shooter who has a rifle which exhibits non-linear dispersion to the Applied Ballistics Laboratory in Michigan to demonstrate the effect. I'll pay your travel and hotel stay (If you successfully demonstrate the effect, I'll even pay your *return* travel as well ) The objective is to produce a repeatable example of this phenomena so it can be studied and hopefully we can learn what's going on.

This is a friendly challenge with the objective of learning. As much fun as it is to discuss all the theories online, I'd really like to actually solve this one.

Any takers?

-Bryan
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Bryan Litz
Ballistician