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Rifles, Reloading, Optics, Equipment
Reloading
Has anyone tested the impact .05 grains has on velocity?
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<blockquote data-quote="Rardoin" data-source="post: 1954171" data-attributes="member: 114954"><p>Actually, not as big a role as one might suspect. I've seen shooters chasing the ultimate load by doing all you describe and more and getting really frustrated because of their 'tune' not being there with consistency (I include myself in that group) because the powder charge was not really right or the powder not the most ideal. When the correct charge is arrived at and a good seating depth that has 0.005"+ range of great grouping the other stuff only brings things in a little tighter; maybe turning a .5moa/60 shot load into a .4moa load. If I desired punching the smallest group I can get over 5 shots and could tune the load between groups...ie benchrest...then all those ancillary factors become much more relevant but that applies to a minority of shooters and certainly would only be of novelty for developing hunting rounds. I was surprised at the great F-Class shooters, some national champions, that don't turn necks and anneal every 5-6 loadings just to prevent necks from splitting from working the brass during sizing. I am fortunate to live in an area where I get to shoot with them and pick their brains on a somewhat regular basis.</p><p></p><p>Cajun- Don't get me wrong, for LR getting the charge within .1gr is important but the expensive scales are for speed of throwing sub .1gr precision quickly. I could get the precision I need with a well tuned RCBS beam balance but it would take me days to load for a 2 day match where I can load 3-4rds/minute with my current set-up.</p><p></p><p>Robin</p></blockquote><p></p>
[QUOTE="Rardoin, post: 1954171, member: 114954"] Actually, not as big a role as one might suspect. I've seen shooters chasing the ultimate load by doing all you describe and more and getting really frustrated because of their 'tune' not being there with consistency (I include myself in that group) because the powder charge was not really right or the powder not the most ideal. When the correct charge is arrived at and a good seating depth that has 0.005"+ range of great grouping the other stuff only brings things in a little tighter; maybe turning a .5moa/60 shot load into a .4moa load. If I desired punching the smallest group I can get over 5 shots and could tune the load between groups...ie benchrest...then all those ancillary factors become much more relevant but that applies to a minority of shooters and certainly would only be of novelty for developing hunting rounds. I was surprised at the great F-Class shooters, some national champions, that don't turn necks and anneal every 5-6 loadings just to prevent necks from splitting from working the brass during sizing. I am fortunate to live in an area where I get to shoot with them and pick their brains on a somewhat regular basis. Cajun- Don't get me wrong, for LR getting the charge within .1gr is important but the expensive scales are for speed of throwing sub .1gr precision quickly. I could get the precision I need with a well tuned RCBS beam balance but it would take me days to load for a 2 day match where I can load 3-4rds/minute with my current set-up. Robin [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Has anyone tested the impact .05 grains has on velocity?
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