here is an update on this rifle now that it is finished and i have fixed any issues with it. i installed screws that adjust the trigger weight so i have the first barrel (right) set at 3 pounds and the second barrel (left) set at 5 pounds to make it easier to pull the right barrel first without moving your finger off the triggers.

i made the butt plate and installed it, since the pics i clocked the screws vertically opposed to horizontally

i have shot a few hundred rounds with this and shot a bunch over the shooting chrony and the bullets say 1080 fps 29gr bullet, both barrels are the same speed, the lowest i saw was 1125 fps and the highest i saw was 1160fps the other 18 shots were in between those numbers

to check regulation and leave the shooter out of it i clamped the rifle in a vice and fired 10 shots (5 each barrel) at 33' (10m)

in one pic you can see the first 2 shots, they are each barrel with no cross over.
in the last pic you can see the 10 shot group below the ammo boxes (i think the vice moved a bit left to right based off the group shape.)

i know this build isn't quite up to standard for the rifles posted on this forum but it was a fun build and shoot and handles very well. I'm very pleased with it

some specs now that its finished

7 pounds bang on
OAL 32.5"
barrel length 18 3/8"
LOP 13.25"
chambered in 22 short
regulated for 29gr bullet at 1080fps @ 10m