The most shocking thing about this post is the OP's Ruger will put 5 mini mags under a dime at 50 yds. I've never seen a ruger do that .
You've shot one?
I've got a Savage HBAR that'll do the same. You shocked disposition may say more about you than me.
My old Marlin 25 will come pretty close to that accuracy with Mini Mags. And it is almost a piece of junk. Except for the fact that Santa gave it to me as a 10 year old. and it kills way too effectively, I might not have kept it myself for 36 years......
