In the Magnums, the CCI Maxi+V has never failed me, ever. Other reports show a similar VERY high level of reliability. The new TNT variant is just a bullet swap, it should be the same cases and primers.
I can't say the same for the new Winchester Supreme black box. 33grain I think, nice advanced JHP design...but in my FA minis, the rim was so thick cylinder spin was sometimes compromised, and I found reliability issues in both my FA and NAA minis.
I suggest CCIs, in Magnums, +V or TNT.
In .22LR, I've shot a lot of Remington Yellowjackets and am impressed with their ballistics per NAA's charts, their accuracy, reliability and numerous reports of good expansion even in the shorter tubed minis.
Jim