22 Dasher vs. 22 GT

[nuffgun]

Considering one of these two when it comes time to re-barrel my tikka .243. Looking at shooting 80-90 grain pills out of it for target/hunting. All things considered, which is the better cartridge?

 

[wind gypsy]

If you plan to use factory tikka mags, I'd think the GT would be more likely to run well in them.