I live in NM about ten minutes away from El Paso Texas. do most of my hunting in NM. I personally wouldnt blink an eye when considering the use of Core-Locts.like ive said they hit hard and retain about 70% of their weight. I use a 338 RUM, and it is hard to find ammo and even harder to find reloading data for it . So I have used the factory Core-Loct ammo. and really like it . It groups about an inch at a hundred yards . It will do until I can find some data on reloadin for my 338. Hope this helps. Leroy.