JoeA, I personally had some blow up problems with the SST out of my 7mm/08 on close range shots. They were the 139 grain I believe. Have to look it up in my load data. BUT I am going to give them another try out of my new .338fed since the 200gr are incredibly accurate and have a good BC of 0.450 for my downrange shots (between 200-400) on hogs.