Load work up. .308 175 SMK's IMR4064.

[Prophet78]

First time posting in this area. Working on a load for a F-Class match in July.
Up for discussion:

Remington 700 .308. Blueprinted, squared, etc.
Lilja 3 groove 1:10
Timney Trigger
B&C Adjustable stock


IMR4064
175 SMK's
Lapua Brass
Winchester Primers.

On the #7 target, I feel like if I wouldn't have pulled the stray, it would have been a .44" MOA grouping. Anything over 42 grains seems like its going a bit fast. Its probably a bit fast. I do have a pic of the primers. Over 42 and they begin to crater a little. No other signs of over pressure. Bolts opened easily.

 

[rweaver00geo]

Have u tried some different seating depths? I think the numbers look good on the 40.5 load maybee playing with the seating depth might tighten that up. Have you tried the fgmm factory ammo? Thats got 42 to 42.5 grains of 4064 or so the rumor is

 

[pell1203]

Phrophet78, you need to get all posted pictures oriented in the same direction. A big part of the OCW test is to determine if the group centers between adjacent loads land in close proximity to each other and based on your pictures, I cannot be certain the "UP" direction is consistent across the seven images posted.

Some seem upright, some sideways, and others taken at a 45 degree angle.