I would shoot that too, but its all gone, so the expensive store bought is all that left unless I reload, and ive been informed that the .303 British is should only be neck sized, and that you only get about four shots per case before it must be discarted.
I measured my fired cases with a calliper yesterday evening after firing and discovered that the shoulder had moved forward and the rest of the case swelled about .006. Which Ive been told is normal, as these rifles had oversized chambers allowing them to acomodate ammunition that may be less than perfect.
I will neck size. This rifle groups nicely, the sights are just poor due to no windage adjustment. Still I like it.