Sounds like your going to have a project too.
As far as weight, our light guns at the Williamsport 1000 yard club must be under 16 1/2 Lbs as fired. One of the restictions are that the muzzle MUST be no more then .950".
With a Remington action, 30" Hart (tapored to .950"), McMillen (Tooley Design) stock, Leupold LR scope and mounts, my two rifles weigh in at 16 lbs.
Your stock should be a tad lighter (?) then the McMillen and if you went with a longer "Darryl barrel" and tapored it to .900" or .850" I'm sure you would be under the limit you have set for yourself.
I have seen Tooley stocks Barrel blocked in the light gun class and still make the weight limit.
The longer barrel would probably have to be bedded (under the barrel) further out for added support.
Ray Romain (Romains Custom Guns) would be able to do what you want and the turn around time is great. He does NOT like to keep the guns in his shop too long. He does a fine job on KDF muzzle brakes
He and I have always furnished the food for the Fathers Day shoot, by the way.
His number is 814-265-1948 and I'm sure he is at home now. He is a retired manchinest.
Good Luck in your project.
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