I had a CZ 458 Win Mag and it was a demo gun before I bought it. It was my second .458 rifle. I shot 237 + rounds before selling it. That includes three lead RB, 300 gr hp, 350 gr Hornadys, 405 gr FPs, 500 gr cast and FMJ, and 510 gr factory SP. No stock breakage occurred. It did not slip under my arm when firing it. And I am about five foot tall. I use a 12 3/4" LOP but never changed the pull on this gun. I traded for a 35 Whelen as I had wanted one for a long time. I am about to trade back for my first 458, a Savage stainless with Adjustable Muzzle Break. I had it set up with a ghost ring rear and a Brockman front post with brass inlay. I will shorten this one and keep it. Next is the 600 Remington in 458 American. I have the Douglas barrel as a take off and just HAVE to own one. It will go well with the other three 45-70s in the safe. Don't flinch. 'Dito