I bumped the rear sight out and used a Weaver mount. I picked up a Simmons 22 mag scope from my local dealer, (fixed 4 power), and it's great for this usage, and under $40.00.
I used a lazer boresighter, and luckily got it close enough to hit the black the first few shots, (unusual for me). That made me think I was not on the paper.
I just got this barrel from Wreckhog on this forum, and if it wasn't brand new it had been kept new. I'm "tickled pink" with it.
These groups were shot with Eley ammo. The Remington bulk I have is not as accurate, but is good enough for plinking. The grandson can do away with ammo in a hurry, even with a single shot....

So far I've not let him near my repeaters...
He doesn't know it yet, but eventually he will get a Marlin I have stuck back for him. I'm setting up the Handi's for me, all else will go soon to my grandchildren.