The article in UK Target Shooter is back online now:
Small Rifle Primer Performance Pt 3 by Laurie Holland | Target Shooter Magazine
He tests a number of SR primers in 308 Palma brass, including several mentioned here: CCI 450, Federal 205 & match, Murom and BR4. His main outcome statistic was consistent muzzle velocity and he tests a couple of big loads looking for cratering and hard to ignite powder (CFE223). A fairly thorough testfire really, with some unexpected results.
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