Load for a 6mm Grendal

[JohnO]

I recently acquired an AR15 upper chambered for the 6mm Grendal.
I am getting some 95 grain Sierras but I don't see much loading data for it. I tried out the gun yesterday at 100 yards with some Hornady 87 hpbt bullets and H4895 and it was extremely accurate.
Thanks, John

 

[JERRYHM]

Some info on the 6mmAR

6MMAR ---------- July 02, 2007 6.5mm Grindel necked down to 6mm.

Head Space using,B) tool NEW = 1.205” FIRED = 1.212 T0 1.216” RESIZED TO = 1.210”

CASE LENGTH = 1.514” MAX. L = 1.525”
Case weight is about 111 grains.

Bullet OAL to touch the lands is --- SR OAL --- LR OAL --- LOAD ------------ SEATER
Hornday 87 gr. --------- 2.179” --- 2.160” --- -------- --- 27.5 --- H4895 –,-140)
Berger 90 gr. BTs ----- 2.246” --- 2.230” --- -------- --- same --------------,-90)
Berger 95 gr. BTs ----- 2.299” --- 2.250” --- -------- --- same --------------
Berger 95 gr. VLD ---- 2.323” --- 2.250” --- -------- --- same --------------,-160)
Berger 105 gr. VLD--- 2.318” --- 2.250” --- 2.330” --- 28.5 --- RE 15 --
Sierra 107 gr. ---------- 2.315” --- 2.250” --- 2.300” --- 27.5 --- H4895 – HOT LOAD need to drop ½ grain
Berger 108 gr. BTs --- 2.290” --- 2.250” --- 2.270” --- 27.0---- H4895 –,-120 SR) –,-100 LR)

Maximum OAL to fit in the Magazines is 2.250”

Neck size is loaded = 0.270”, Fired is = 0.273”, resized is = 0.2675”

200 – 300 yard Loads
Berger 90 gr. BTs Good for both OH and Rapids
Hornady 87 gr. Use for OH only

600 yard loads
Berger 105 VLD

Bullet ---load --- OAL ----Seater --- Group size ------------ Comments

B105 --- 27.0 ---2.330 ---,-90) ----- 9” ---------------------- X ring elevation
B105 --- 27.2 ---2.330 ---,-90) ----- 7 5/8”------------------ Under X ring elevation

B108 --- 27.0 ---2.270 ---,-100) ----- 7” ---------------------- Good group
B108 --- 27.2 ---2.270 ---,-100) ----- 4 ½” ------------------- Best group--- more groups in 27.2 to 27.5 range

S107 --- 27.0 ---2.300 ---,-80) ----- 7+” ---------------------- X ring elevation
S107 --- 27.2 ---2.300 ---,-80) ----- 4 in 3 ¾” 5 in 5 1/8”— more groups in the 27.2 to 27.5 range