So, I'm looking to custom build an SSK .300 Whisper off of a CZ 527. I'd REALLY rather not go out and buy a new one, but will if I have to. My question is this. Since I only need the action and stock, what do you all think I can expect to pay for a used 527 in .223? Also, how's the trigger on these. I like the SS trigger idea, but heard there a lot of creep in the standard trigger.