Pablo:
I have one similar to that in a .218 Mashburn bee. I assume the breach block has been bushed? If you have any trouble with primes flowing into the pin hole, try CCI #41's thats the prime used in USA military 5.56, its the hardest small rifle primer cup made. Mine's a tack driver, I'm sure you will have fun with it. The only problem with going from a hornet to the bee is brass availibity. Hornets are easy to get here, Bee brass is a bugger to find. The manufactures only make it once a year.
Those are fun guns and the triggers can really be honed to a crisp break, mine breaks at about 3 1/2# and I put a set screw through the rear of the guard for over travel.
Bob