I think one of the reasons the early versions may have lost petals may have been due to the fact that they tended to open wider and flatter - there was more 'meat' in the ogive on them.

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...like this 225 gr .338 XFB

The later ones moved toward a sleeker ogive which seemed more inclined to curl tight and small..

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...like this 100 gr .284 XFB

This latter bullet had an ogive shape very similar to the TSX which followed it and they seem to be less inclined to open as wide. Some have suggested that the problem in opening that I have seen might have to do with the not-infrequent use of them that we see when the temps are colder. I'm not sure that I buy that since 100 degrees is hardly much when considering metals and metalurgy, but who knows? I'm glad that they seem to work well in warmer climates for whatever reason(s). I still like the idea of their tipped versions for greater consistency and reliability, as well as the concept of shooting bones with them. They are hard to improve upon for shooting bony structres.


Sometimes, the air you 'let in'matters less than the air you 'let out'.