Onward,
they are definitely shooters. And, be careful with old ammo. split .22 cases can cause powder to shoot back around FP through hole in frame and onto face.
Thankfully I never shoot without glasses.
However, it is the EARLY Sentinel revolvers that didn't have the ejector spring.
I believe by the R-102 configuration, but definitely by the R-103 configuration, they had that spring- and thus not as likely to have scratches you referred to.
This is evident when comparing parts lists for them.
The early JC Higgins and Revelation 88 pistols were like the R-101: No spring, and can gauge the frame.
Also, sometime after the R-101 [by 103?] they got rid of the cool unique ratcheting cluster of dimples on the cylinder and went to the more traditional revolver ratchet design.
The R-106 was the first, I believe, to use a cross grip screw to hold the grips on. Prior iterations used the grips shown in this picture- sliding up over the bottom.
These are probably never going to have the capability of a good 'ol fashioned S&W K22 Target Masterpiece from 1954, or a Colt Officers Model Target/Special/Match from before 1968 [depending on variation- back to 1910s], but they are fun to use, and accurate enough for smiles and 'minute of tin can' shooting.
Precision may not be as good as others- but price is lower also.
Fun revolvers, from an innovative company.
BTW, the designer who worked on the Sentinel design left High Standard and went to Ruger, where he worked on the Speed/Security Six design, that led to the GP100.