You're expecting silver dimes too much.
Are you finding silver dollars? Halves? Quarters? Half dimes? See my point?
A dime in 65 could buy a loaf of bread. And folks were more reluctant to lose a dime. We're talking a full belly from spending a single dime!
Are you expecting silver dimes because someone else found one , or some? Then duplicate to perfection exactly what they did in/on the same site , with the same people hunting it prior with the same duplicated history.....Not realistic? Then so is comparing someone else's site ,ability, or recoveries.
Being in AZ. my change of pace suggestion would be to research past events and locations where lots of people spent a lot of time , and where they spent a lot of money of the era you seek coins from. Then locate unhunted (far as you know) sites within those parameters.
Outside of known event (or just stubborn returned to over and over sites folks frequented) I would seek out old roads and trails in between formerly popular destinations. Even pre railroad (though don't ignore long gone depots and whistle stops) routes.
Then I would regard every potential shade areas from that era , and water sources. Existing , or merely ghosts of former shade or water. Then scour them slowly ,patiently , and methodically. Not cherry picking. But getting into the era desired by removing the signals above it.
My silvers (no , no wheelbarrow full , yet.) have mostly came with mixed signals. Often iron. Junk on top or near them that others passed by due to , junk signals.
While I sniffing patently with headphones heard that tiny sweet chirp of silver. Nope . Yep. Oh it's just a peep when the coil is moved just so... But it's iron. And something else too , but there's that tiny peep again. Guess I better dig after frogging around a minute on the same targets.
Do you watch other folks detect?
I've watched "speed racers" in a default park I hunt hitting untold numbers of signals and not digging any.
I don't object to cherry picking , hey I do it sometimes.
But that same park I've been cruising along at glacier speed (that is very slow) and again got that faint peep trying to be heard through iron.
That silver dime was below not one , but two old nails. More than a few detectors passed it up prior.
No , I don't have an expensive detector, Nor am I a genius with it.
What has made silver dimes recoverable was first silver dimes. Then , my coil being over them. Then , recognizing they were there.
A dime on edge near max depth of my ability? I better be on my game just right. (Meaning such dimes are often fairly safe from me..)
Please , (Please!) ; no one tell me how many silver dimes I've missed...Not that I've been on un-hunted grounds known to contain many , but knowing I've likely missed as many or more than I've recovered.