JB, how much will 100' vs. 555' above sea level matter if the equation is already on the fence?

Maybe I can get more Lil gun in a K Hornet case that gunner can squeeze into a Hornet case... shocked

I may get a can of 300-MP. Is 300-MP denser than Lil gun, as in getting more in a case? If it's slightly slower than Lil gun, I'm guessing maybe not.

DF