i am pretty sure they are gamekings....and i will be shooting them through my mauser 98k..i could probally load it to the very max and be fine...this loads pressure wasnt the highest in the book...and my friend shoots it from him remington 760 pump gun...so if that action if fine a bolt shouldnt have a problem...i hope my gun likes em! and why arent u suppost to hunt with some hpbts for? because of the way the "blow up" as ive heard it called...i didnt have that problem when i took my first doe...hopefully these work just as good....

mauser06