OCW at 200 yards?

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Last time I did an OCW at 100 all the poi were very close (within .1 inches). I did a ladder test, and am now going to test 77-78.2 grn H1000 in my 300 WM, was thinking about shooting them at 200 yards.

 

[Dan Newberry]

Do you have a picture of the target where the POI's were all within .1 inches at 100 yards? Group shape can also come into revealing the OCW... but at longer ranges, you'll get subtle influences from wind. Many do ladder tests and disregard the horizontal, but that assumes (incorrectly) that all horizontal dispersion is from the wind. Sometimes it's just the way the barrel threw the shot.

 

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Here's my 200 yard shots, not that happy with how they grouped but I know that doesn't matter. All kind of the same impact so I'm thinking number 3.

Berger 190, .01" off, H1000
1. 76.4
2. 76.7
3. 77
4. 77.3
5. 77.6
6. 77.9
7. 82.2

 

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77 grains was also the OBT

 

[gvanhyning]

Here are the OCW instructions: http://optimalchargeweight.embarqspace.com/ocw-instructions/4529817134 .
IMHO 200 yards is too far. Groups will be easier to identify at 100 yards. I strongly suggest you read the instructions for the OCW. Good luck.


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