I tried 139 grain sst's and the regular 139 grain Hornady soft points in a Weatherby's vanguard S2 Sporter and in a Savage axis 7mm08's with much less than spectacular results. The Savage shoots em better than the weatherby, but still 1 1/2" group is the best I've got with them. Thinking about switching to seirra bullets? I would try Speer if you could find them anywhere. I hate paying $30 for a box of bullets.