No bc improvements that I can see, maybe they updated the GMX for a lower velocity expansion threshold with the wider, shallower cavity , bearing surface appears same, maybe they are using a different alloy to reduce pressure from the previous design with the Gilding Metal that spiked pressures much like the old Barnes X of the 90's ?
Grooves are slicker on the CX and the new tip won't melt ....
Not a Hornady fan but I'd try them ....
they should start showing up soon out here, for some reason we don't have a problem getting Hornady bullets, just the other night, a local joint got in a big stack of 6.5mm 143 gr ELDX and 147 ELDM bullets along with 30 cal 200 gr & 220 gr ELDX and a bunch of other cals, while everywhere on the web is out of stock ...
1st pic is the old GMX
2nd pic the new CX
....
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