my 400 fps R-hopped AEG went head to head with a CA m24 R-hopped BASR shooting around 450 fps at the distance of about 85m.
He was almost lobbing at me, and I was lobbing at him. The difference in range in terms of 50 fps difference? he had about 30 feet more range before the BBs started dropping. Mine were hitting the ground 30 short of his posistion while his would just be starting to drop when they got to me.
When both shooters can see each other, it's a pretty boring fight, you can see the rounds coming in at you from that far off, you can see them visibly slow down and drop. Also when we recounted after the fight to compare notes, we both had each other dead to rights in sights but the BBs would be deviated off the flight path by as much as 3 feet on both rifles.
We were both using .3s
The difference really wasn't all that much, honestly. And to give up full auto for that extra 50 fps in velocity is a handicap more than a benefit.
So you must REALLY want to play sniper if you go that path. Willing to crawl around or wait on your belly for half the game to get that 1 or 2 kills. Meanwhile all the other folks with AEGs are running around and racking up the kills.
I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.