I have 2 Remington 788's in 243 Winchester. The only difference I see is that one has a shorter barrel than the other. I have found that brass fired in one will also chamber in the other (just a little tighter in one) after being fired and before being resized. Got me wondering if it would be okay to neck size the brass fired in both and shoot them in either rifle or should I keep the brass separated? It would be great to come with a single load that would work in both guns.