It's been so long since I used any factory ammo in any of my firearms I couldn't tell you but the 26" barrel on your A-bolt should make it closer than most 24" barrels. More important are the exact chamber/bore dimensions that determine whether you have a "fast" or "slow" barrel. The only factory ammo I've fired is federal blue box Powershok .270 that I bought to zero a buddy's gift rifle and I didn't have need to cronograph it.
Last edited by stalkingbear; 07-22-2009 at 05:52 AM.