NRAA 308 ammo specs

[darke_peak]

I am new to the sport of target shooting and just getting my gear together for F class standard. In the meantime I am trying to get an understanding about ballistics and to start keeping records. I plan on hand loading my own ammo in the future, but in a quest to build up a stock of brass I purchased some Winchester SuperX in 308. It is the NRAA load with Sierra 155gn PALMA match projectiles. Anyway, I would like to find out a bit more about this "off the shelf" load, in particular:

- Which powder do they use (I assume 2206 or 2208)?
- How much powder?
- What expected muzzle velocity?

All things I should have asked when I bought it I suppose.

Any assistance or direction would be appreciated. Thank you.

[Guest]

G'day darke_peake,

Welcome to the best sport in the world--F class.

In answer to your questions,

Powder is 2208,
Load varies with the batch--I have seen it as low as 45.4gn and as high as 47gn---The factory load according to what will give them around 2920fps in their test rifle.

This speed will vary dramatically depending upon the barrel you use and it's length.

Nowdays, factory ammo is $1 per round, you can reload for about half of that.
Currently the factory load with Sierra projectiles, but I believe they will shortly change to Dyer projectiles,---the performance is slightly different

To get the ultimate performance from your equipment, reloading is the way to go, then you can tune your load to suit your barrel.

Barry Davies

[darke_peak]

Thanks Barry for that info, all I needed to know.


Regards,
Mark