I've spent several hours reading and searching this but would still like to hear your input about converting a Romy G to this wildcat. I realize it's likely been done but any info for converting a Romy G would be greatly appreciated.
Goal is to use heavy cast bullet and create a slow-moving, low-flash, sort of quiet, 1100 fps projectile for use at night around the home. Wild dogs, coyotes, etc under 75 yds at night. I know it won't be quiet, but I don't want to shoot in the middle of the night and be totally blind and deaf.
Cut 308 case at shoulder and insert 44 bullet.
Headspace on the case mouth.
Resize with 308 die, Expand mouth with Lyman M die, Seat and Crimp with 44 mag collet pistol die?
Can the Romy G bolt be opened up enough to take a 308 rim?
Will the action handle this cartridge? No idea what pressure it would generate, but a 250-300 gr bullet at 1100 is what I'm thinking. Maybe push it to 1500 and try taking a whitetail deer at 100 and under.
Best twist, and will it be possible to find a barrel blank without breaking the bank?
Should look something like the middle round. Bullet is a 45 I whittled down to fit for the mock up.