OCW 155g scenar help please

[Dacam]

Here is my ocw attempt.
I had some really good velocity numbers 2850's fps to 2970's fps, but not really sure if Im in the ballpark or not.

As you can see, I went from kinda scattered in Grp 1 and 2, tightened up a bit in 3, then vertical spead in 4 and 5,

then went to horizontal spead in 6 and 7. Should there be a node between 46.9 and 47.3?

No pressure signs with any of these loads but I do feel that I was at the ragged edge of maximum.

AIAE MKIII 308, 24" Lothar Walther 1/12 twist

Load - 155g Lapua scenar
Win brass
210m primer

 

[Deerhunter28]

How far are you shooting?
100 yards???


PSE EVO 60 Lbs.
Blacked out

 

[Dacam]

Yes, I shot it at 100yds.

 

[WildBill3/75]

46.5-46.9 looks like the area to focus on to me.

 

[sps tac]

I'd have to take 47.5. Dead center of that high node.

 

[Tactical]

Shoot some ten round groups and see what extreme velocity spread is and get a larger amount of ammo to see what potential is. Three rounds is just to check if its safe

 

[Dan Newberry]

If that's Varget there is a high node with 155's just under 48 grains... maybe as you're seeing, 47.7 or there about. Next node under that should be at 46.5 to 46.6 grains. And that's looking correct as well. Scatter at 45.8 points to 46.4 as a node... so either place should work fine. Just check velocity and shoot for the tightest spread of velocity, as Tactical advised.

Dan

 

[jsthntn247]

47.5 and rock out

 

[Dacam]

If that's Varget there is a high node with 155's just under 48 grains... maybe as you're seeing, 47.7 or there about. Next node under that should be at 46.5 to 46.6 grains. And that's looking correct as well. Scatter at 45.8 points to 46.4 as a node... so either place should work fine. Just check velocity and shoot for the tightest spread of velocity, as Tactical advised.

Dan

Yes, its Varget. I was thinking the high node was in the high 47's but I'll just run the 46.5 node. I was in the high 2970-2990fps with 47.7, it was very hard on my rifle and my brass...lol
Also, I ran an ocw on the 175g SMK with IMR4064 and you were fricken dead nutz with the node of 42.3 with winchester brass. Awesome!
Thanks, Dan

 

[ChrisGarrett]

You make beautiful targets.

46-47grs of Varget and do 15-15-20 of X, Y and Z weights between that spread, shooting five shot groups and see.

Chris

 

[peaceatwar]

I found my happiness at 46.5 you may want to try shooting these multiple times. My 46.2 looked better at 100 but at 300 46.5 was the clear winner.

 

[Dacam]

I found my happiness at 46.5 you may want to try shooting these multiple times. My 46.2 looked better at 100 but at 300 46.5 was the clear winner.

Thats kinda what I was thinking, it just may group better at longer distance than 100yds.