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Rifles, Reloading, Optics, Equipment
Reloading
New .22 Cal Matchking
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<blockquote data-quote="rost495" data-source="post: 65091" data-attributes="member: 1768"><p>Brian</p><p></p><p>FWIW info. Cannot get the same speed out of a 4 groove Krieger 6.5 twist safely as I can get out of 3 groove Pac Nor 6.5 twist.</p><p></p><p>Also-- extensively shot 90s in a 7 twist Krieger. (in 223) Had some luck at stabilizing but it was really on the ragged edge. Lots of bullets that were tipping at 300 yards. Not exactly keyholes sideways but oblong bullet holes. Knowing I was shooting a 20 inch tube and that I could probably kick the speed up to max and things would be ok was not good. Especially if I got to Perry and it was 50 degrees etc..... So off to the next thing. There was a 6 twist tube already. Folks had used and were not happy. My gunsmith talked to Chris at PN and they committed to do a 6.5 twist if we chipped in for tooling. Unknown to us we gave the AMU at Ft. Benning a free ride this way as they were playing too.....</p><p></p><p>1.227 to 1.325 is short to long on a box I just dug up. I bought more than a few as they shot so well. This is still a 2002 lot date.</p><p></p><p>Hope some of this is of help!</p><p></p><p>BTW the bc of the JLK is 560-565 after doing a bunch of shooting, chronographing, and then comparing comeups from the ballistic programs and is backed by AMUs actual doppler at 1000 yards. FWIW.</p><p></p><p>Since I'm out of shooting for sometime now, its exciting to at least talk competitive shooting. I'm kinda proud of getting the 90 JLK to run and actually winning with it after getting the kinks worked out.</p><p></p><p>Jeff</p></blockquote><p></p>
[QUOTE="rost495, post: 65091, member: 1768"] Brian FWIW info. Cannot get the same speed out of a 4 groove Krieger 6.5 twist safely as I can get out of 3 groove Pac Nor 6.5 twist. Also-- extensively shot 90s in a 7 twist Krieger. (in 223) Had some luck at stabilizing but it was really on the ragged edge. Lots of bullets that were tipping at 300 yards. Not exactly keyholes sideways but oblong bullet holes. Knowing I was shooting a 20 inch tube and that I could probably kick the speed up to max and things would be ok was not good. Especially if I got to Perry and it was 50 degrees etc..... So off to the next thing. There was a 6 twist tube already. Folks had used and were not happy. My gunsmith talked to Chris at PN and they committed to do a 6.5 twist if we chipped in for tooling. Unknown to us we gave the AMU at Ft. Benning a free ride this way as they were playing too..... 1.227 to 1.325 is short to long on a box I just dug up. I bought more than a few as they shot so well. This is still a 2002 lot date. Hope some of this is of help! BTW the bc of the JLK is 560-565 after doing a bunch of shooting, chronographing, and then comparing comeups from the ballistic programs and is backed by AMUs actual doppler at 1000 yards. FWIW. Since I'm out of shooting for sometime now, its exciting to at least talk competitive shooting. I'm kinda proud of getting the 90 JLK to run and actually winning with it after getting the kinks worked out. Jeff [/QUOTE]
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New .22 Cal Matchking
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