Ruger makes and sells quite a few "big rifles" in 375 H&H, 416 Rigby and 458 Lott.
HERE Those are the bolt guns - not counting the No. 1 which doesn't really have an action length to speak of. In the No1 thumpers include 375H&H, 405 Win, 416 Rigby, 458 Lott and the 458 Win.
I don't think Ruger did it to have a thumper - they already had them - I think they did it to offer a gun in the general MK II line that a guy could use as a DGR. The Magnum line before this typicaly featured upgraded wood and an upgraded price to go with. CZ has been offering large bore rifles at a good price and I think Ruger wanted a piece of the pie. Now they could have just offered the thumpers in a MKII and been done but whats the fun in that?
