I've obtained most of my SSP actions as Ernie mentioned from him. Another consideration may be to give the Savage Striker a try. That action has quite the rep for delivering great accuracy. I'd definitely get ahold of FiftyDriver as Ernie mentioned he's extremely knowledgeable regarding bolt SSP's, and big, bottle-necked, long-range cartridges (u'll have to ask him about his XP .338 WSM, and 6.5 WSM). He's quite active at www.longrangehunting.com , and in fact has become one of the "go to" guys there for tech. info.