RE: Shrinking groups of 300WM
Your choice of powders may be limited when using the 200 grain bullet in the short mag. The 200 takes up a lot of room that the short mag does not have to spare. One of my manuals says the 180 is a better choice for the Short mag. The short mags can brag about efficiency and accuracy but you pay a price and that price is case capacity. Try the 180 grain Nosler Partition.