Hi freom Taranaki

Hi.  Stratford shooter here and a member of the Eltham Small Bore Rifle Club where I and others shoot air rifles twice a week.  Some of us own relatively expensive PCPs, but nearly all of us own at least one Weihrauch springer - and that's for good reason.

My 2 cents worth would be (and I think all of my shooting buddies will agree) is to forget about the Gamo no matter how much the salesperson raves about it - you'll probably be disappointed.  

For the same price as the one you mention you'll be able to purchase a new Weihrauch HW50 in .177 cal plus a Nikko Stirling scope, a combo that will give you a very high level of accuracy, lots of dead rabbits and years of service.

PLUS, you would be competitive if you wanted to join our little club (we have a member who travels down from NP) as the springer shooters are now getting very close to the PCPs - especially on our 25yd indoor range!

PM me if you'd like more info.

What sort of range are you shooting? 

.177 flies faster and flatter, somewhat easier to shoot at varying ranges - .22 has a larger arch so more holdover to account for. 

high power .177 will tend to drill holes through things at close range - arguably .22 will dump for energy into the target for more efficient kill..

Rabbits really arent too tough of an animal, unlike possum, so either caliber would be fine. .22 may be a safer bet as a good allrounder