I'd never thought about long range 12 ft lb springers. Till I brought one out (BSA Lightning XL .177)to the hide whilst pigeon shooting on the South Downs last month.

No exact idea of the range, but shot 300 pellets (few pigeons that day) at pieces of chalk out a long way. Seemed to be aiming about 3 feet high for some of them. The rifle shot impressively. Shame I didn't have a target to put out. Must try it a bit more scientifically next time...