Let me start off by saying it's a wonderful thing that Tony is making these barrel sets available. I am considering a 16-ga. 0-frame set to mate up with my 20-ga. 0-frame Repro. Initially, I had thought a set of .410 barrels would be cool for one of my 28-ga. Repros, but Dean may have underestimated when he mentioned this:
The bad news is, that set of .410 barrels could add 1/2 lb. to the weight of a Repro 28 ga. This additional weight could enhance the swing or it could alter the balance point and make the gun feel like a club. I'd like to heft one that's had these .410 barrels fitted before I commit any serious cash.
Another poster who currently owns an original 28/.410 bi-gauge Repro set mentioned on another site in a similar topic about these Galazan offerings stated his 28-ga. 26" gun with BT forend weighs 5 lbs. 8 1/2 oz., with the 26" .410 barrels and a splinter forend weighs 6 lbs. 4 oz.---for a difference of nearly 3/4 lb. With these Galazan .410 28" barrels and the same forend you would probably be looking at these barrels adding close to a pound of weight--which obviously is significant and would undoudtedly change the handling characteristics and dynamics of the gun.
At $1895 and what could turn out to be about a pound of weight I'm going to live with my Po' Man's 28/.410 Parker--a 28-ga. Repro 2-bbl set with a set of 28-.410 Chambermates (which weigh only a couple of ounces) until I can get a test run of the Galazan .410 tubes mounted on a 28-ga. Repro.