cobalt327 you stated that your ultimate 499 would be a multi shot. If you look at the evolution of the Daisy avanti 499 one of its predecessors the daisy model 99 had a 50bb shot tube similar to a Model 25. This is not the Daisy model 99 champion which was a single shot front loader like the 499. Found out that before there was a specialized Daisy 5m target gun 4h clubs would buy multiple Daisy model 99s and find the best barrel out of the bunch. This resulted in Daisy making the 99 champion then the 499. Thought I'd pass along the info. Doing my own build now and looking for a Model 99 but having trouble finding a site with one for sale that imports into Canada. SIGH!!!!!