I have a Brno 602 in .375 H&H with a custom stock fitted but I plan to cross bolt it. I do not know why the stock was replaced in the first place, but maybe it cracked as well. I looked around and found a company that makes laminated cross bolted CZ 550 Magnum Express stocks. Take a look at www.brockmansrifles.com if you are interested.
-------------------- It's the journey, not the destination.