Need some quick help. I just won a rem sendero in 7mm. I have an elk hunt in 2 weeks but have to shoot solid copper, no lead. I have dies, brass, and powder. I am thinking about buying Barns ttsx in 150gr. to load. Anyone have any suggestions as to a good load? I topped the sendero with a zeiss z-800. I took it off the 300RUM when I sent it into BOTW for them to rescope it.... The sendero is a tack driver, sub moa at 200 yds with factory 150gr corelocks. I have a 300RUM thats dialed in and ready but I figured a backup gun isnt a bad idea for a once in a life time tule elk hunt. Thanks!!