The Browning SA-22, also known as the ATD (automatic take down). When John Browning designed it in 1914, it was the very first self loader in .22 LR. Nowadays Browning makes a few other .22 autos, so maybe calling it the ATD would be better.
Although I've owned maybe 60 different .22's in the last 5 decades, and shot many other types that friends owned, I had never shot, or even handled an ATD until 3 years ago. My aunt has a big Ranch in Montana, and for years guests visiting would buy her a new .22 or shotgun in appreciation of her hospitality whenever they arrived. She now has quite a collection, and while going through them I saw she had an ATD.
It had an old Lyman 6x scope on it that looked to big for the little receiver, but man that thing would shoot. I found it liked Mini-Mags and I could get nickel size 50 yard groups and quarter size 100 yard ones. I slayed a few hundred gophers that summer, and knew I had to get an ATD one day. This is her ATD and all those brown spots out in the pasture are gopher mounds:
Last month I saw an older (1969 Belgian) one at a gunshow that had been abused, I ended up trading some 9mm ammo that had cost me $105 for it.
Broken buttstocks are common on these as there is a correct way, and a not-so-correct way to take them down and remove the barrel.
Correct procedure is to grab the receiver (not the stock!), pull the bolt back slightly so as not to chip the extractor, then twist the barrel to remove.
Many don't know the correct procedure, and hold the hollow stock, which blows a chunk of wood out from the torque.
This ATD I got had a nicely done but darker wood patch to fix the piece that blew out, and also a patch where someone had smacked the butt plate down and broke out a piece from the toe. Then someone at a later date had done it again and a big piece was missing from the left side. It had some rust and slight pitting on the receiver and barrel, and the barrel adjusting lock ring, plungers and springs, along with the cartridge stop inside the gun were missing.
I figured I'd just get a new stock and forearm from Browning but even the Grade I set runs $255.
I ended up winning an E-bay auction for $110 on a Belgian butt stock that has a few dings.
The rust wasn't that obvious from a distance, but it bugged me, and I figured even if I sent it off for a pricey re blue I doubt they'd be able to remove all the pitting without also removing some of the engraving and barrel markings.
I ended up doing what costs me very little, as I am set up to do Cerakote. A light sandblast and I finished the barrel, receiver an underside of bolt in Sniper Grey Cerakote. Gun is very durable now, won't ever rust again, and I won't have to worry about scratching it.
When I ordered the missing parts I also got an ATD spare parts kit from MGW, it includes the most often needed parts for the ATD.
I replaced the action, firing pin and extractor springs, also the extractor, cartridge guide and cartridge stop.
The old parts were still usable but I'll keep them as spares.
It is surprisingly easy to hit out to 25-30 yards with the irons, but in order to get the front bead down into the notch you really have to scrunch your head down on the stock. I'd have to order a taller front sight to be able to raise the back leaf a bit.
For now I bought a $30 Simmons 4x .22 scope and used a $12 Weaver cantilever mount. The scope is a big larger than I like but when finances are there I'll get an older Redfield Cub 4x or maybe a Leupold Rimfire scope.
A cantilever mount that attaches to the barrel, and hangs over the action is what you want for consistent repeatability.
Older ATDs, early 60's an older, had grooves on the receiver, but when you removed the takedown barrel and then reinstalled it, you'd have to re zero every time. Better to have the scope (or irons) attached to the barrel only.
A couple days ago, an older neighbor and I went out to shoot the .22s. He has a Miroku ATD that he inherited when his brother passed away, also scoped with a cheap Simmons.
I set up some small spinner targets and golf balls at 50 to 60 yards, and we had great fun whacking them. I was shooting from the sitting position leaning against my rear tire, he needed to shoot off his hood with bags, as at 69, he feels he isn't steady enough without a rest.
We didn't miss much at all and had the spinners going round nonstop.
The ATD is one fine pointing, lightweight and fun rifle. Mine likes Mini-Mags (what .22 doesn't ?) but as far as hunting ammo, does the best with RWS HVHP. I'm glad I finally have one, just wish I hadn't waited so long !