I have just bought myself a Steyr (back position) rifle fitted with a 1935 BSA Match Rifle barrel in .303. Having loaded .303 for about 15 years I thought I was on top of most things, however; my reloads require some effort to close the bolt, where as with factory Privi the bolt closes with ease. Having taken a vernier to both type of rounds its clear that the difference lies in the neck of the case with the reloads being bigger. The Privi has a crimp but as I am using Sierra Match Kings I can't crimp........or can I?? The reloads have 41.5 Grns of N140 under the 174Grn SMK and gave me a couple of "V"'s at 900 on Stickledown last Sunday. Advice please gentlemen; also the name of a good tailor for plus fours woudn't be amiss!