Over the course of a few years from 2016 to 2021 I hunted and successfully took whitetail with a variety of lead free bullets that included the following.

2016 - Barnes TSX 130gr - 270win
2018 - Nosler E-tip 130gr -270win / 55gr Horn GMX 223REM
2021 - Barnes 110gr TTSX-7x57 / 120gr Horn GMX 6.5 CM

Every bullet killed the deer. Honestly though, none of them killed quite like a cup and core of similar weight in that caliber. If I were to rate them in order of performance I would take the Hornady GMX 1st, either Barnes 2nd, and the Nosler E-tips last.

I personally believe the GMX expands the best, and the Nosler seems almost too "tough" of an alloy.

I've given thought to trying the new Hornady CX but I haven't done so yet.