Yep, the 55t has got to be one of the best break barrels ever, so long as you dont expect silly power levels. Interestingly the modern hw99s has the same trigger and cylinder dimensions as the 55 and an articulated cocking link as well, but the breach from the 95 so no latch and a bloody great spring (for such a little rifle). I have run my 99 with a cut-down oem spring and it shoots much like a 55, definatly an option if you arent lucky enough to own the real thing, you can even buy a tyrolean stock from maccari and make a modern 55t from a 99!
At the moment my 99 is full power with a vmach kit and it works well enough, but would run better at lower power levels.