There is no most powerful airsoft sniper rifle that you can just buy. But, Iv'e heard of guys tuning them over 800fps with custom parts. My most powerful is 600fps.
The most powerful sniping rifle currently would probably be the RH-Alan RT20 rifle (Croatia) and Denel NTW 20x110 (South Africa). Both fire a 20x110mm cannon cartridge, which is significantly more powerful than other rounds used for anti-material and long range sniping, such as the 14.5x115mm, 12.7x108mm, and 12.7x99mm (.50 BMG) cartridges.
plain and simple.yes. but not the most accurate.
You will have to define "sniper rifle". There is no meaning to that term, other than an accurate scope mounted rifle. That includes most hunting rifles.
the SNIPER rifle that does the most would have to be, from my knowledge, the Barret m82 (otherwise know to gamers as the 50 cal) but the most powerful rifle that is not sniper that borders on being artillary is the PtRs41. this has something of a kick and can take out anks, which is what it was desighned for. a scope can be mounted, and the barrel is rifled, and if it is used by a "sniper", than technically, it is a sniper rifle, but its portrayal on one video game is unrealistic, as attempting to shoulder fire this weapon, especially when walking, would rip off limbs. it is impossible to feel happy after shoulder firing a PtRs41 Actually, the 14.5x115 cartridge used by the PtRs41 is quite powerful - substantially more so than the 12.7x99 (.50 BMG) cartridge, sniper rifles have been manufactured which surpass it in power. The Croatian RT-20 and South African Denel NTW 20x110 both use a 20x110mm cannon cartridge.
Most guns come in black.
A sniper rifle is simply a rifle used by a military sniper. Just about every gun shop will carry hunting rifles. The type will vary depending on what you are hunting- squirrels, rabbit, deer, turkey, bear, elk or elephants. What you are calling a "sniper rifle" is simply a bolt action center fire rifle with a telescope.
All are equal in this regard.
50.Cal.
It is often accepted the Heckler and Koch PSG-1 is the most accurate sniper rifle in the world.
The most commonly used sniper rifle in the Marines is the M-40A3. It is a standard bolt action rifle with a Remington 700 action that fires the 7.62X51 NATO round.
The correct term is cartridge- which is the cartridge case, primer, powder, and bullet. A sniper rifle is simply an accurate, long range rifle that is used by a sniper. It may look exactly like my long range hunting rifle- since most military sniper rifles BEGAN as a civilian hunting weapon.