My daughter has a 7mm-08 that I've been reloading the past few months. I only have 50 cases of RP brass...it's pretty much sold out everywhere online now. I have a load worked up. 47g of IMR4350/139g SST/CCI200 , so it's hot enough that now reloading the brass is failing. So I need some new stuff, it's crunch time...almost time to go hunting. My question is if I get some Winchester brass will I be able to work with this same load, or do I need to rework them and work up again. She had a Nikon BDC reticle on the scope, so testing the velocity and getting her range card for her reticle is a must. Obviously I'm going to see a difference in velocity with different brass? I may drop it a grain, I'm getting about 2830 for a velocity on the afore mentioned load, I would do this to try and extend the life of the brass. I still think dropping a grain would still give me the velocity I need. Thanks in advance....and yes, I'm only into reloading a few months now, so that's why the question.