Modern Sporting Rifle Evolution
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RangerJoe

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Reply with quote  #1 
Most reloading presses use 7/8" x 14 TPI dies.  Reloaders who have been "at the game" for a long time develop a feel for how far to turn a die to adjust it... but for beginners, it can really be a hit & miss exercise in frustration trying to make fine adjustments.  Here is a table which has 3 columns: Inches of Adjustment; Number of Turns; Number of Degrees.

For example, to adjust a die by 0.025", you would turn it .35 turns, or 126 degrees.  While your eye might not be that finely calibrated, anyone can SWAG 1/3+ turn.

Making tiny adjustments requires a gentle hand...  0.001" equals only 0.014 (1/71th) of a turn, or only 5 degrees rotation.
 
Die Adjustments.jpg 


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MDWS

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Reply with quote  #2 
Good info thanks for posting!


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Cabob

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Reply with quote  #3 
Thanks for the info RJ. I've done the calculations before but I'm in the "1/8 turn group" when doing seating depth adjustments for final grouping. That usually gets me between .008 and .009 difference from previous rounds. I usually test one and turn down just a "smidge". This is the art part of reloading, with a little science thrown in for fun.😉 Thanks again for the info.
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