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Old June 3, 2012, 08:34 PM   #22
Nnobby45
Senior Member
 
Join Date: November 20, 2004
Posts: 3,150
Some primers are hotter than others, and my chronographing show that velocity increases by about 50 fps. when swithing to WLRM from WLR primers.

Even different brands of standard primers vary the velocity a little.

The best brands are CONSISTENT in their burning rate. That's all bench rest primers are---better quality control.

So far, haven't detected accuracy differences in hunting loads. Bench rest shooting might be a different matter.
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