I run mostly copper washed value pack ammo through the various k frame .22s. But that's not to say the next lot of Green Tag might not be "the bomb" in something! Problem now days is finding enough ammo to both test and then buy in quantity.
Some things I've noticed to be generally true:
1) Winchester .22 LR is not the most accurate in anything. (But WW .22 Magnum is the best by far in my 648. By a factor of 3-4x over CCI! )
2) Remington Thunderbolt is generally wretched. Rem Golden Bullet value packs can be great or poo, depending on the lot. Remington Target variations are usually OK to excellent.
3)Federal is almost never terrible, some is excellent, even some lots of Value Pack, but it's not consistent. (I'm down to less ~1500 rds of my favorite lot that has been the hunting and accuracy standard for the 617s and some others.)
4) Wolf Match has been a good buy, but not worth the extra expense in the revolvers.
Basically, buy at least a little of whatever you find. Test it quickly so if there's more to be had of a particular lot that's exceptionally good, you can buy more. (If supply ever catches up, that is!) And often what's not the best in one firearm may do fine in another, sometimes. Or can be put to use for different purposes.
The Value Pack has been the best buy of these samples. The American Eagle is OK, but way dirty. The Match isn't any better accuracy wise in the revolver, but has been good in some rifles. Have just purchased about a 1000 Auto Pistol match rounds, but mostly for the High Standard. May try some in the long 617 and report back. Green tag as well, but it won't be current production, as I haven't seen any in ages.
