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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: 30106" data-attributes="member: 1391"><p>Len ,Sorry i don't have the 2 meplat trimmers here at the moment ,i have loaned them to a shootin buddy for testing on some 7mm bullets, can take a pic and send later if ya like?...I can't really guess what difference an untreated bullet vs a treated one is because i have never done it on a fully treated one...I started in '97 by batching both oal and base to ogive and saw a real improvement over un checked projectiles,by 2000 i moved to bearing surface and saw another improvement and then in '03 i started to modify the meplats and have not had good enough testing conditions to confirm or deny the results.(i will soon be testing again as my good test weather is just about here...I did the other checks of bullet dia and weight and got no where but i still qualify as explained each time, as i figure that each bit of equalization i do can't hurt...On my light gun the biggest gain was in the bearing surface ,realy quite strikeing,it pulled the V.D. from 5.5 inches down to less than 2 inches..Smallest group with the 106CLO's was 3.400 wide and 1.700 high at 1K..JR..Jeff Rogers..ps.pic of modified 187BIB <img src="http://img.villagephotos.com/p/2003-8/341566/ogiveuniforming.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="a.JR, post: 30106, member: 1391"] Len ,Sorry i don't have the 2 meplat trimmers here at the moment ,i have loaned them to a shootin buddy for testing on some 7mm bullets, can take a pic and send later if ya like?...I can't really guess what difference an untreated bullet vs a treated one is because i have never done it on a fully treated one...I started in '97 by batching both oal and base to ogive and saw a real improvement over un checked projectiles,by 2000 i moved to bearing surface and saw another improvement and then in '03 i started to modify the meplats and have not had good enough testing conditions to confirm or deny the results.(i will soon be testing again as my good test weather is just about here...I did the other checks of bullet dia and weight and got no where but i still qualify as explained each time, as i figure that each bit of equalization i do can't hurt...On my light gun the biggest gain was in the bearing surface ,realy quite strikeing,it pulled the V.D. from 5.5 inches down to less than 2 inches..Smallest group with the 106CLO's was 3.400 wide and 1.700 high at 1K..JR..Jeff Rogers..ps.pic of modified 187BIB [img]http://img.villagephotos.com/p/2003-8/341566/ogiveuniforming.jpg[/img] [/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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