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Turn up the temperature!

By Matthew Cameron

Sometimes when the accuracy of a rifle diminishes, it takes time to work out exactly what the problem is. Often there may be several symptoms that are not the root cause of the problem. One of my own rifles (a stock standard factory Ruger 77V in .243 calibre Winchester) became involved in a series of tests that I was running for another article.


At the same time, another project was to test 55 grain Nosler ballistic tips in some new European brass. It was obvious that the usual suspects of loose screws, bad bedding and a rubbing barrel were not the culprits. Having eliminated the mechanics, the only other possible suspect was the ammunition.


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