As I prepair to enter the realm of reloading I have a question that been hanging in the back of my mind. I'm sure there are some old timers here who can steer me in the right direction. As I embark on working up a cartridge that shoots best in my particular rifle (7mm RemMag), since I want to use the 168gr Berger VLD as my LRH round and in light of the all ready determined reality that I need to determine just how much "jump" if any it requires to the lands. And since I will also be working up the best powder, amount of powder, primer combination for this rifle, what is the correct sequence to proceed? Get the loading H-1000, Retumbo, etc. and most efficient primer determined and then work on COAL, or get the COAL determined with a "book" load and then work up the load to optimum performance from there? Certainly don't want to get the horse before the cart and as one might imagine, just starting into developing custom loads carrys a certain amount of anxiety with it. Just don't want to screw things up and possibly turn this newbie into worm food. Appreciate any advice.