Re: Which die should I use?
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Most reloaders don't accurately record the number of times that they reload each case
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I load 3 cases to neck splits or 10 firings whichever comes first before I call a load "established" so Ican measure to ensure that primer pocket expansion is moderate, and so I can see how much flow there is for trimming purposes, and to figure out weather or not the load will benefit from bumping the shoulder over simply neck sizing. I follow this process for any rifle load I produce. Ive loaded for 7mmrem, 7stw, 30-338, 300WM, 300wby, and even a little bit of 338WM. Ive had 180Bergers over 3150 from reformed remington 300WBY cases with Retumbo, that last 6 firings before the primerpockets get loose. They still chamber without difficulty. Ive currently got 4 barrels for my savage switch barrel gun that have belted chambers cut in them... and 2 I don't count in the corner on account of them having throat erosion too severe to shoot anymore. Each barrel gets its own notebook to record every range session, and count every round... and every barrel gets its own cases in boxes with individual numbers... sorted for weight uniformity, and neck thickness variations. My 300WM barrel for instance has 4 boxes (200rds total) each time a box of primers get moved from box to case, it gets noted on the box of brass... so I know exactly how many times my brass has been fired... and its more than 2. Most of the brass on the current barrel is at 4 the box im currently shooting from is 5. Im using federal brass... most agree the softest on the market.
Heres my numbers... will you share yours? Im very curious to see how my chambers, my brass and your dies might get along.