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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New 17 cal project, +600 yard reach???..............
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<blockquote data-quote="Fiftydriver" data-source="post: 114566" data-attributes="member: 10"><p>JB,</p><p></p><p>They are not stress cracks but instead jacket folds. THis is a VERY heavy jacket for a 17 cal bullet and these are also pre production bullets so there is a learning curve building them.</p><p></p><p>These bullets would not be sold to the public with these folds but they will not make any difference to performance for me to test with so I really could care less.</p><p></p><p>If you look at most Sierra MK bullets, nearlly all of them have these same jacket folds to some degree or another. In the larger calibers they all have them if you look close enough and they do not effect performance. They are also very common on bullets such as the Hornady 750 gr A-Max 50 cal bullets.</p><p></p><p>Just something that happens with thick jackets. This is why they do not show up much using VLD bullets on J-4 jackets, not thick enough. Not thick enough to survive high velocity and high RPMs either. Tit for tat I guess. If you want the high speeds and high RPMs you may have to live with some small amount of jacket folds in the ogive of the bullet. Again, I have yet to see this make a difference in consistancy.</p><p></p><p>Have been told time and again that the weight of bullets we are using will not work. We will see I guess. In all the ones we have played with so far, only one caliber, the 100 and 107 gr 22 cal bullets have not met our velocity goals and accuracy goals and with nearly every release of a new bullet we were told they would not work so we will see.</p><p></p><p>Never know till they get in the air is what I say and so far our record is not to bad.</p><p></p><p>Good Shooting!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 114566, member: 10"] JB, They are not stress cracks but instead jacket folds. THis is a VERY heavy jacket for a 17 cal bullet and these are also pre production bullets so there is a learning curve building them. These bullets would not be sold to the public with these folds but they will not make any difference to performance for me to test with so I really could care less. If you look at most Sierra MK bullets, nearlly all of them have these same jacket folds to some degree or another. In the larger calibers they all have them if you look close enough and they do not effect performance. They are also very common on bullets such as the Hornady 750 gr A-Max 50 cal bullets. Just something that happens with thick jackets. This is why they do not show up much using VLD bullets on J-4 jackets, not thick enough. Not thick enough to survive high velocity and high RPMs either. Tit for tat I guess. If you want the high speeds and high RPMs you may have to live with some small amount of jacket folds in the ogive of the bullet. Again, I have yet to see this make a difference in consistancy. Have been told time and again that the weight of bullets we are using will not work. We will see I guess. In all the ones we have played with so far, only one caliber, the 100 and 107 gr 22 cal bullets have not met our velocity goals and accuracy goals and with nearly every release of a new bullet we were told they would not work so we will see. Never know till they get in the air is what I say and so far our record is not to bad. Good Shooting!! Kirby Allen(50) [/QUOTE]
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New 17 cal project, +600 yard reach???..............
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