Hi, "my older eyes" also require some help spotting hits at 100 yards with the 22's. I found a solution by buying bright colored card stock -pink /orange/ green- about 24 x24 inches- buck a piece at the dollar store. I draw thick felt black circles, one or two inches for rimfire( 22 and 22 wmr) and 3- inches for hi power sighting, and have no problem spotting hits to about 100 yards, even further with my leupold rimfire scope set at 7x.
Thanks, I will give that a try. Wonder if I could run that through my printer, hmm. - dan