300 PRC W Berger 220 LRHT with H1000

[Max_The_Phoenix]

Hi everyone
Currently working on my 300 PRC rifle

Build:
Defiance Ruckus Tactical
MdT Acc elite
Bartlein 28” 9t
Cortina tuner at 0

Lapua 2x fired
Cci br2
Berger 220 LRHT
15thou off
After 250 rounds down the barrel I meticulously prepared the 2x fired brass for consistent neck tension.

Ran a ocw from 77.2 to 80.8 in 0.3 increments.

What I see is that the obt node in QL is 1.430ms which was giving me consistent POI from 77.8 to 78.1 in 3 different range days around 2850fps

This is the target from last month

I ran this test yesterday I see some differences in Poi and I don’t know what the heck happened to 77.8. It might be me?!

77.2 2815fps
77.5 2837fps
77.8 2851fps
78.1 2857fps
78.4 2880fps
78.7 2886fps
79.0 2903fps
79.3 2910fps
79.6. 2915fps
79.9 2931fps
80.2 2947fps
80.5 2963fps
80.8 2969fps

Bolt at 80.2 bolt was heavy but nothing that scares me.

I ran a seating depth test at 79.3 and didn’t like it at all.
What do you guys think about running seating depth in the middle of 78.4-78.7?
Or Even 79.3-79.6
POI is the same.
Velocity is flattened with ES of 8

 

[375fan]

I'd load up a bunch of 79.6 , 20-30, and stretch them out at 1000 yards to a mile (if possible)and see what your vertical is like.

 

[Maurygold]

I like 200 yard targets for load development much more. The increased resolution from groups is very helpful in trying to split hairs when you get a gun like this which shoots a bunch of very small groups at multiple loads