The TNT is just a hollow point.
The Vmax will expand better.
The 20 grainers are a tougher slug and better on tougher targets.
Try em all to see what your rifle likes...
Personally, I feel all rimfires are all about precision. None of them are .223s. Whether you are trying to head shoot a tree squirrel at 100 yards or slip one behind the shoulder of a Coyote, the 17MR is all about accuracy.
In a good rifle there is no reason to settle for anthing less than solid 1 MOA 5 shot groups or better. If you find a load thats crazy accurate in your rifle go back and buy as much as you can, preferably in the same lot number.
Most folks usually see the best accuracy in the 17HMR with some flavor of 17g Vmax..And YES various brands and lots shoot different even though I believe they are all still loaded by CCI.
