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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Velocity E.S. vs Vertical Dispersion at 1,000 yards
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<blockquote data-quote="a.JR" data-source="post: 30103" data-attributes="member: 1391"><p>Len,My procedure is to 1st start with as many bullets of choice as i can get,then batch into 2 lots of approx 5 to 6 thou diff in aol...Any that go high /low outside of this are sent to the fire form bin...I then cut the length of the tip down to the shortest ,so i end up with 2 batchs out of say a 1000 would give me approx (using a hand made comp benchrest bullet)480 bullets @1.325 and 480 bullets @1.330...Then i use a cutter i made that looks like an elaborate pencil sharpener to equalise the meplat at 60 thou...I now have say batch #1 all the same length with the same dia tip(meplat) and so on...The next step is to batch into lots of equal ogive to base dimension...then batch again into equal bearing surface ... The degree of how tight u batch has to do with the match weather conditions you are up against,it is a waste of time running bullets that are quailified to 1 thou if there is at least a mminute of mirage movementon your target...When i travel to shoots i do not have the privilege of knowing the weather(my nearest big comp is a 1000 miles away)so i go with the best i can make...This will NOT make a 10in gun into a 3in gun,but once your on top of the brass and the tuning it'll come...I am stickler for details in every area,for instance i went to the match where i shot those targets with 60 loaded rounds that varied from 484grains to 484.6 gns total weight ..JR..Jeff Rogers..ps i have a pic of the prepared projectile beside the standard unit if your interested.</p></blockquote><p></p>
[QUOTE="a.JR, post: 30103, member: 1391"] Len,My procedure is to 1st start with as many bullets of choice as i can get,then batch into 2 lots of approx 5 to 6 thou diff in aol...Any that go high /low outside of this are sent to the fire form bin...I then cut the length of the tip down to the shortest ,so i end up with 2 batchs out of say a 1000 would give me approx (using a hand made comp benchrest bullet)480 bullets @1.325 and 480 bullets @1.330...Then i use a cutter i made that looks like an elaborate pencil sharpener to equalise the meplat at 60 thou...I now have say batch #1 all the same length with the same dia tip(meplat) and so on...The next step is to batch into lots of equal ogive to base dimension...then batch again into equal bearing surface ... The degree of how tight u batch has to do with the match weather conditions you are up against,it is a waste of time running bullets that are quailified to 1 thou if there is at least a mminute of mirage movementon your target...When i travel to shoots i do not have the privilege of knowing the weather(my nearest big comp is a 1000 miles away)so i go with the best i can make...This will NOT make a 10in gun into a 3in gun,but once your on top of the brass and the tuning it'll come...I am stickler for details in every area,for instance i went to the match where i shot those targets with 60 loaded rounds that varied from 484grains to 484.6 gns total weight ..JR..Jeff Rogers..ps i have a pic of the prepared projectile beside the standard unit if your interested. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Velocity E.S. vs Vertical Dispersion at 1,000 yards
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