Just finished a 300 Blackout build but have nothing to shoot out of it. 
WTB 300 Blackout supersonic ammo, preferably Remington 115 or 125 gr. No suppressor yet so not looking for subsonic loads.
Willing to pay a premium, but less than $3/round.
Don’t need much, just need enough to check function for now.
TIA.
EDIT (4/3/2013): Between this and TOS I am set for now on 300 Blackout ammo. Thanks.