from several different savage 22 high power efforts over the years, i can relate the experience that the speer 70 grain semi-spitzer (@.228) is much more frangible than the hornady 70 grain spire point (@.227). these were the choices for 22hp that were readily available. i believe the norma bullet was midway between them - but never found those bullets available as components.

doubtlessly german sources would provide bullets better suited for high velocity, but if experiments with cheaper stuff is useful i would search for the hornady.

best regards,

tom

"it's a poor sort of memory that only works backwards."
lewis carroll, Alice in Wonderland