6.8mm SPC 150 grain round nose experiments

[Float Pilot]

6.8 x 43mm Remington SPC REPORT FIVE Jan 18, 2009
150 grain jacketed round nose soft point bullets.

Conditions:
Rifle: Stag 16 inch flat-top, 1 in 10 twist SPCII chamber, A2 buttstock with Tubbs flat spring
Sights: Fixed 6 power Leupold. FXIII 42mm Heavy Duplex
Range 100 yards
Temp: 32F to Positive 35 degrees F , Pos 2-5 C average
Light: Bright light on snow.

STARTING LOADS: I will try some more next weekend
A:
Bullet: 150 grain Winchester Round Nose, flat base
Powder: 24.0 grains AA 2230
Primer: CCI-400 small rifle, hand seated
Brass: SSA
COL: 2.255 inch Lee Factory Crimp
Velocity average: 1,800 fps 28 fps ES
3 inch group. OK primers

B:
Bullet: 150 grain Winchester RN, flat base
Powder: 27.0 grains, WW-748
Primer: CCI-400 small rifle, hand seated
Brass: SSA
COL: 2.255 inch Lee Crimp.
Velocity average: 1,920 fps 39 fps ES
2.0 inch group Some Pressure Signs,

C:
Bullet: 150 grain Winchester RN, flat base
Powder: 22.0 grains H-322
Primer: CCI-400 Small Rifle hand seated
Brass: SSA
COL: 2.255 inch Lee Factory Crimp
Velocity average: 1,766 fps 22 fps ES
1.2 inch group, Some Pressure signs


D:
Bullet: 150 grain Winchester RN, flat base
Powder: 22.0 grains RL-10x
Primer: CCI-400 Small Rifle hand seated
Brass: SSA
COL: 2.255 inch Lee Factory Crimp
Velocity average: 1,845 fps 30 fps ES
2.75 inch group, Clean, Some Pressure signs,

 

[UniversalFrost]

did you do any additional testing with teh 150 or even 130 grain bullets?

interesting results so far.