I would get it just for something different Sounds interesting.
Dont assume that extra 4 1/2 FPE will extend the distance much though mate, it'll be a whole other world in hitting a 10 pence coin with a 16ft/lb springer, even though it maybe smooth. It'll have some movement in the shoulder, no doubt. As you'll understand, power is nothing without accuracy.
I would assume its in one of the larger calibres too. No point with 177 or even 20.
But yeah, f'kin do it. Sounds mint.