adg 300 wsm part three ?

[6bra1k]

so i have weight sorted prepped brass and fire formed over 100 pcs.
i have a working load with norma brass and now need to figure a powder adjustment for the difference in case volume between the norma and the adg.
this is a brmxd 600/1000 yard br rifle at a mere 32 lbs.
at 100 yards, i shot 6 three shot loads in .3 grain steps looking for the velocity of the norma load.
i think i found a sweet spot..yes only 3 shot groups, vapor trail 204's........0.071"

 

[FURMAN]

Awesome! H4350?

 

[6bra1k]

Awesome! H4350?

naw rl23 has been since day one of this rifle. i burn up i4350 in my fire forming rifle with 208 and 175smks.

 

[FURMAN]

What charge, speed, barrel length?

 

[Ranger188]

Where did those Vapor trail like to be off the lands?

 

[6bra1k]

What charge, speed, barrel length?

my gun, my reamer less than 65, 32" 2900-2960////2930 for the .071

 

[6bra1k]

Where did those Vapor trail like to be off the lands?

i am about .010 off of TOUCH

 

[Orr89rocz]

Nice. Rl23 is my fav. I find between 65.3-65.5 seems to work well in norma cases with 208 berger or 210 vld.

How much case volume diff is there with adg?

 

[6bra1k]

Nice. Rl23 is my fav. I find between 65.3-65.5 seems to work well in norma cases with 208 berger or 210 vld.

How much case volume diff is there with adg?

my lots of brass fired and sized for my chamber
norma 79.5
adg 80.80
so the sdg has 1.3 grains more vol in my case

 

[6bra1k]

in this case the vol diff showed that even with .3 grain more powder, i got 10 fps less velocity,
but in a single test when more powder is added( another .3) velocity came back, but added vertical.
more testing to do. some where between 64.5 and 65.3 in the match brass. it is plus or minus a tenth.

 

[SKWERLZ]

Looking forward to your report on brass life.
I have 20 loads on some of my adg 7 saum brass.
I’m really happy with it.

 

[6bra1k]

group size bump