Recommended 22LR ammo for Silverboy

[da2357]

What 22LR ammo is recommended for the Uberti Silverboy? This rifle would be used for varmint and small game hunting.

[Gatofeo]

No one can tell you. You have to find out.
The .22 rimfire is one of the most persnickety cartridges, and the firearms that shoot them are equally so.
Buy a box of each kind of ammo you can find. Put a real target at 25 yards and, from a benchrest, carefully shoot 10 rounds from one box into that target. Then write on the target:
Date
Ammo brand: Winchester, Remington, Eley, CCI, whatever.
Ammo type: Super X, Yellow Jacket, Target Rifle, Raptor, etc.
Distance to target
Number of shots fired
Name of rifle and serial number

After you've tried at least a dozen different boxes of ammo, compare the targets. You'll find some that group tight, some not so tight, some groups slightly off center, etc. Choose the ammo that puts all 10 bullets into a tight group in the same spot, then try it at 50 yards.
For game hunting, you'll want your rifle sighted to 50 yards.

I know this all sounds like a pain, but it's worth it. Once you decide which is most accurate, write the ammo on a narrow strip of masking tape and place it on the stock. This will avoid confusion and misremembering later.

Whatever caliber, each firearm is an individual with preferences and dislikes, but the .22 rimfire is particularly this way.

For hunting and varminting, it's hard to beat the high-velocity .22 hollowpoint. But if you plan to eat what you shoot, it may destroy too much meat. In this case, a solid point delivered to the head or neck can stop small game without ruining meat.
If you're shooting varmints, a hollowpoint ensures a quick kill.
I've had good luck with CCI SGB ammo on small game. It has a flatpoint bullet that transfers a lot of energy. The CCI Velocitor - not so good, it doesn't group accurately in any of my rifles or handguns, but it may in yours.

You just have to find out what your rifle likes. It's the only way to get maximum accuracy from it. And frankly, hunting and varminting demand very accurate ammo to place the bullet exactly where it is needed. Often, only the head or portion of the animal's body may be visible for a shot, so accuracy is premiere.

Take the time to learn what your rifle likes. It's a small investment with a big payoff.