OCW help please

[09cs]

Here were my first loads shot
Powder: Varget, Bullet: 175 SMK, Federal Brass. Rifle: Remington 700 AAC-SD, 20 inch barrel, 1:10 twist.
Some one telling me (dif. forum) try 43.2-43.5 (but 43.5 gave about 1 inch group) and 44.3-44.7. Just looking for more input and thought I'd see why you guys think. Thank you for all your input and help!

 

[shoot4fun]

not able to tell much from your jumbled up pics. You need to be able to see all the test on one target for clarity IMO.
I will say that my normal "sweet spot" is 44.7 gr Varget with the 175SMK. I load to a COAL of 2.80" but you may play with seating depth for your rifle. As for group size, I wouldn't put much stock in making really small ones but look for the really big ones. That is where the scatter node is. ALso, watch for where impact is on the target as you progress up the charge weights.

 

[09cs]

not able to tell much from your jumbled up pics. You need to be able to see all the test on one target for clarity IMO.
I will say that my normal "sweet spot" is 44.7 gr Varget with the 175SMK. I load to a COAL of 2.80" but you may play with seating depth for your rifle. As for group size, I wouldn't put much stock in making really small ones but look for the really big ones. That is where the scatter node is. ALso, watch for where impact is on the target as you progress up the charge weights.

Here is one with both targets next to each other

 

[shoot4fun]

do another test with 44.3 to 45 in .2 increments. I think your seeing something at 44.5 grains. You did shoot round robin with cooling in between didn't you?

 

[09cs]

do another test with 44.3 to 45 in .2 increments. I think your seeing something at 44.5 grains. You did shoot round robin with cooling in between didn't you?

No I didn't give time for the barrel to cool for the most part. Probably shot two groups, waited a min at most. Didn't think of that :/

 

[BLDTYLRY]

You might want to re-read the OCW process.

 

[09cs]

I was just excited that everything was going well, I didn't even think about giving time to let the barrel cool between groups

Should I rerun each of those groups?

 

[waveslayer]

Yes. Shoot round Robin. The. I shoot out to at least 300 to confirm my groupings

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[shoot4fun]

Round Robin and at 100 yards to begin with. 300 yards won't provide initial data needed because of the environmental conditions. Once you have the node and the seating depth then go longer for confirmation. It is all in the OCW procedure outlined on Dan Newberry's site. As offered above, read the procedure outline again.