Tunneling rats on the hog feed lot. ?22 LR round nose. Oh yeah.
Ca 1966, my college Physics 100 level prof had a 52B iirc that he loaned to me to try out. Went 245 miles upstate to my Uncle's farm for the test run...I really wanted that jewel.
He had feeders on an augur on a long concrete slab, south side of the 3 hog bays. Rats had tunneled to a fare thee well.
I would sneak around the big blue Harvest Store, pieing the holes and shooting the targets through the arc, open Redfield Match sights. Had to open the front and rear iris up to get a sight pick.
One notable terminal result was delayed. I took a quartering shot, rat's front left shoulder, no corpus delecti. Thought it was well delivered. Hmmm, oh well.
The next day, head shot one in same tunnel area. After they all got skittish, I went up to toss'em onto the slab for the protein supplement. Examining the head shot, he also had an entry hole left qtr, exiting out the right haunch!!?? He showed no ill effects when lining him up for the coupe de grace

. Ya know, rereading this, it seems soooo far fetched, but honest injun, not a faded memory.
The 52B? Well, a college student working Work Study, car insurance, dates. . . . I HAD to pass. :/