I shoot alot of speer bullets. my 270 shoots 130 hot cores the best. killed a bunch of deer with them. i have noticed they do come apart but do alot of tissue damage.
now i shoot 165 gr grand slams in my 308 and they do a awesome job!
I have a box of 25 cal 120 sptz but i havent loaded or shot any yet. i am going to a heavier bullet next year in my 25-06 from 100 gr noslers b/t' s.
the nosler killed but i think a little heavier bullet will give better performance.