If you are using a Wilson press-on, press-off sizing die you better get a full length die also.
How many times can you reload Lapua brass in the PPC configuration? Lots of things to consider. Back when the PPC first came out (it was mainly the 22 PPC for a while), supposedly you could take a new barrel and 20 pieces of brass and wear the barrel out. Not so today.
In the early days of the PPC and using the typical load of 27-27.5 grains of one of the 322's like GI322. T32, H322, etc., wearing out a barrel with those 20 pieces of brass was the norm.
Along comes V133. It normally shoots best wide open. Wide open loads with V133 and the 6PPC are in the 29.8-30.8 grains. At this rate your brass will give good service for about 30-50 reloads.
Among the top 20% of competitive group shooters, many make new brass for each major event like the Super Shoot, NBRSA Nationals and IBS Nationals.
Much of case life is dependent on how well the sizing die fits the chamber. If you are only working the brass about 0.002" the brass will last much longer than if you sre working the brass 0.004" or more.