[Nincomp]

XMan, this is little off topic, but what are your thoughts about the most effective shape for causing the most damage at 6.8 SPC speeds. Over the years I have seen arguments that a nice round mushroom-shape like formed by the Gold Dot causes less tissue damage than something with a relatively flat or fluted face. The argument is that the flat or fluted faces throw tissue aside better and cause more tearing.
This question occurred to me again this weekend when I saw Ron Spomer interviewing a rep from Hammer Bullets whose bullets are designed to shed their petals and present a flat face when traveling through tissue.
Thanks

edited to add: I did not mention the "propeller-shaped" petals from bullets like Cavity Back, which are a whole other kettle of fish.

 

[Nincomp]

It is important to note that the amount of centripetal force increases linearly with increase in diameter, but in a squared fashion with RPM's. In other words the combination of larger diameter increases the force trying to open the tip, but the increase in rotational speed much moreso.

 

[Nincomp]

I wonder if Hornady could switch to the softer FTX tip similar to that used in the 30-30 bullet would solve the problem?

 

[Nincomp]

I think just going back to the softer GMX tip would return the CX to better performance.

You are probably right. I am just curious to see if a softer tip would further reduce the velocity needed for expansion. I remember stories of hunters who would fill "hollow points" of bullets with vasoline to increase expansion. Hornady, for example, has been using the soft FTX polymer in a fair amount of pistol and subsonic ammo for rifles.