Thread: Powder recommendations for short barrel 308?

Originally Posted by John Duxbury

Basically the powder that gets the highest velocity in a long barrel will get the highest velocity in a short barrel. This idea that shorter barrels benefit from a faster burning powder is not really a thing.

This means use 2208 or 2206H. Either will work well. I use 2208 in my .308 for what its worth.

Using the faster powders often means you will get near complete powder burn before the bullet leaves the barrel. Might not mean much for velocity or accuracy, but not having all of that unburnt powder meeting an oxygen rich environment in your suppressor is always a bonus.
I bought a second hand 10" 308, and the poor suppressor on that was in a poor state after only 100 rounds of factory ammo. Shooting without the suppressor would invariably show a massive muzzle blast.