Superformance in 30-06

[Varmit]

I picked up a box of this ammo in the 150 grain GMX and was amazed at the accuracy. The federal premium was grouping about 2 1/2 inches at 200 yds and the hornady stuff at 1 1/8 inches at 200! It kicked more too.

On the Zeiss rapid z calculator most factory loads require the 3x9 scope to be set at 7.5 power to make the yardages line up, but with the superformance it requires 9 power because of the increased velocity.

I've heard good and bad about the superformance but the bad reports seems to be a few years ago when it first came out. Any other reports on this ammo?

 

[manitou210]

It works great in a 30.06 with 165 gr Accubonds but man its a dirty powder.

 

[Varmit]

It was the factory loads I used.

 

[sheephunter]

Haven't tried the 150 but have run the 165 grain through quite a number of animals including 9 last week. With a Rapid Z 600 on a 3.5-10 scope, our magnification setting in 9.3x. Velocity is impressive as is GMX performance.

I dug out a few bullets for comparison here. These are three .308 GMX bullets fired from a 30-06. From left to right:

250 yards on an axis deer, impact 2450fps, .568 diameter

300 yards on a zebra, impact velocity 2300fps, .582 diameter

530 yards in test medium, impact velocity 1900fps, .510 diameter

 

[contaucreek]

I found the freshly spent cases smelled like amonia ?? a new propellant maybe ??

 

[Varmit]

I found the freshly spent cases smelled like amonia ?? a new propellant maybe ??

I did notice it didn't smell anything like H4350 (after the recoil)