thanks for the quick reply ed.

i got a toy gun from holts auction, in 12 gauge with an action that was so overbuildt that it looks like a 12 with 20 tubes. so i wanted to monoblock it anyways but then i saw your tread again and got a bit hot under the collar, i will do the mesaurments when it comes home and see about barrels etc it looks so fun i think dieter horneber could do a few cases as well, allthough i dont think i will do a full 3.87" a nice 3" would do nicely .
something like a paradox on steroids.

best regards

peter