The Lapua SR brass has worked great for me. Heads up that the flash hole on these cases is undersized too - 1.5mm (0.059"). Many decapping pins might not fit it and will swage out the holes when you deprime.
My Redding FL dies had two decapping pins and the smaller of the two did fit the holes. I like to use a Lee Universal deprimer, so I just got an extra pin for it and turned it down to fit the Lapua SR cases.
Check this out:
Lapua SR case Good luck,
Rex
