I played at QuickPass 3 last summer with my BA at 550 fps.
I didn't hear a single complain about it. In the end, it all comes down to know both your people and your guns.
Actually, I had a few guys lining-up behind my rifle to try it after the game...:P
I am all for it. Realistic respawns are a must too. A single rifleman does not POP out of no where at war. Need at least 4-5 guys, maybe more.