Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
224 Allen Magnum testing finished............
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="brianwinzor" data-source="post: 114142" data-attributes="member: 1067"><p>Kirby, Disappointing to hear the outcome of the testing of the 100 &amp; 107 ULD's in your 224AM, as I am about to send my 6.5 twist Krieger (4 groove) to my gunsmith to get attached to a Rem 700 LA, and be chambered for the .224 Clark.</p><p></p><p>I just calculated that the "ceiling" of about 3,000 fps with the 7 twist barrel equates to about 308,000 rpm. This doesn't augur well for my hopes of about 3250 fps with the 100 grain bullet in the Clark, as it will be producing 354,000 rpm in the Krieger 6.5 twist.</p><p></p><p>In your testing with the 224 AM, as the accuracy deteriorated as you progressed from 3,100 to 3,350 fps, with both the 100 and 107 grain bullets, were the bullets holding together, or were some or all not reaching the target? </p><p></p><p>I have some of Richard's original batch of 100 grain ULD's which were made using the J4 jacket. Another tester here in Oz, found that with this bullet in his 7 twist 22/6mm AI, the accuracy at 3,100 was good, but 3 of the 13 shots fired did not reach the 300 yard target. </p><p></p><p>Richard told me several months ago that he was using a thicker 6mm jacket for the 107 grain bullet, but had to overcome jacket problems before he would send them to me. I assume that he had solved this problem with the 107's you were using, yet they still did not perform as hoped at the higher velocities despite the thicker jacket. </p><p></p><p>Prior to ordering the Krieger 4 groove barrel, I rang their technician, and he was confident that this would work well, and that the extra expense ($75) of a 6 groove was unnecessary. I hope that decision doesn't come back to bite me.</p><p></p><p>It just occured to me that the 142 grain 25 cal ULD I will be using in a several weeks time in a 257 Weatherby with 7 twist Krieger should be reaching 3,200 fps and 329,000 rpm. Do you believe there is any reason for concern about this J4 jacketed bullet holding together? I do have some 156 ULD's for back up. </p><p></p><p>I deeply appreciate the way you share your testing information on a variety of cases, and I certainly have learnt from your experiences. Regards, Brian.</p></blockquote><p></p>
[QUOTE="brianwinzor, post: 114142, member: 1067"] Kirby, Disappointing to hear the outcome of the testing of the 100 & 107 ULD's in your 224AM, as I am about to send my 6.5 twist Krieger (4 groove) to my gunsmith to get attached to a Rem 700 LA, and be chambered for the .224 Clark. I just calculated that the "ceiling" of about 3,000 fps with the 7 twist barrel equates to about 308,000 rpm. This doesn't augur well for my hopes of about 3250 fps with the 100 grain bullet in the Clark, as it will be producing 354,000 rpm in the Krieger 6.5 twist. In your testing with the 224 AM, as the accuracy deteriorated as you progressed from 3,100 to 3,350 fps, with both the 100 and 107 grain bullets, were the bullets holding together, or were some or all not reaching the target? I have some of Richard's original batch of 100 grain ULD's which were made using the J4 jacket. Another tester here in Oz, found that with this bullet in his 7 twist 22/6mm AI, the accuracy at 3,100 was good, but 3 of the 13 shots fired did not reach the 300 yard target. Richard told me several months ago that he was using a thicker 6mm jacket for the 107 grain bullet, but had to overcome jacket problems before he would send them to me. I assume that he had solved this problem with the 107's you were using, yet they still did not perform as hoped at the higher velocities despite the thicker jacket. Prior to ordering the Krieger 4 groove barrel, I rang their technician, and he was confident that this would work well, and that the extra expense ($75) of a 6 groove was unnecessary. I hope that decision doesn't come back to bite me. It just occured to me that the 142 grain 25 cal ULD I will be using in a several weeks time in a 257 Weatherby with 7 twist Krieger should be reaching 3,200 fps and 329,000 rpm. Do you believe there is any reason for concern about this J4 jacketed bullet holding together? I do have some 156 ULD's for back up. I deeply appreciate the way you share your testing information on a variety of cases, and I certainly have learnt from your experiences. Regards, Brian. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
224 Allen Magnum testing finished............
Top