Hey everybody, i'm gettin ready to make up loads for my 7mag. i"ve settled on the 168gr berger and now am trying to decided which powder would be best for this. Im runnin a 26'' barrel with 250 cci primers. The 2 powders that i have narrowed my choice down to are powders that i have never used before and am lookin for opinions from those that have.. The 2 are IMR 7828ssc and Retumbo. So if any of yal have used these, especially with thhe berger bullet could i get some feed back on what ya thought about them, things like velocitys, which burns dirtier, temp stability or temp sensitivity etc etc. thanks in advance.