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Posted: 7/12/2012 11:54:23 AM EDT
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My understanding is when looking at why certain bullets are accurate in one rifle and other bullets are not you have several things going on.
In no particular order––––- 1)weight of bullet - certain weight bullets are going to be suitable for a particular guns twist rate 2)Size of the shell caseing. From handloading I realise that if I size my brass excessively or not enough that accuracy will fall off. 3) velocity- again from handloading-as I work up a particular load there is generally a velocity range that shoots better with a particular bullet/powder combination. 4)uniformity––a good "match" load will have high quality bullets that are uniform in weight,size,length and the load will have brass that is uniform in size,internal volume and the bullets will be set into the case in a way that they are straight (runout) and of similar length and powder charges carefully selected so with the other factors velocity is uniform from round to round. Occasionally a factory load or handload is discovered that has low cost bullets that are somehow assembled in a manor that they give better than expected accuracy but generally to get exceptional accuracy one requires higher grade premium bullets (more costly) from one of the name brands. I am a lazy handloader who is always looking for the shortcut to the better (more accurate) loads. As a reloader my favorite method is to take the Sierra manual out and use their advise along with their match bullets. Sure there are other good and great bullets out there but Sierra seems the fast track to me. My club has a handful or actual world class shooters (not their word, I have seen their trophy rooms) and I am happy to pick their brains. Great- I have come up with the perfect answer to the question that aparently doesn't exist–– 
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