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.338 Allen Magnum...WOW!
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<blockquote data-quote="Fiftydriver" data-source="post: 999187" data-attributes="member: 10"><p>Been testing some Krieger and Bartlein barrels.</p><p> </p><p>Last three Bartlein barrels I have developed loads in for the 338 AM averaged 50 fps more velocity with same brass life in a 30" barrel length compared to the standard 32". Stepping up to a 32" barrel averaged close to 100 fps more.</p><p> </p><p>Kreigers are very similar. Have a new one to test that will be interesting, new design for the XHS. </p><p> </p><p>Now, some of this is from using the new Bertram brass as well which is simply stronger brass then the old Jamison brass. The combo has been very positive however. Add to that the harder cut rifled barrels are lasting around 10-15% longer as well from early testing.</p><p> </p><p>Only 6 barrels tested so far but that is enough to give a pretty good idea that they are a bit faster and do not pressure up as quickly.</p><p> </p><p>Have also redesigned my XHS barrel contour which is supporting the chamber better. </p><p> </p><p>Always tweaking as we go along!!!</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 999187, member: 10"] Been testing some Krieger and Bartlein barrels. Last three Bartlein barrels I have developed loads in for the 338 AM averaged 50 fps more velocity with same brass life in a 30" barrel length compared to the standard 32". Stepping up to a 32" barrel averaged close to 100 fps more. Kreigers are very similar. Have a new one to test that will be interesting, new design for the XHS. Now, some of this is from using the new Bertram brass as well which is simply stronger brass then the old Jamison brass. The combo has been very positive however. Add to that the harder cut rifled barrels are lasting around 10-15% longer as well from early testing. Only 6 barrels tested so far but that is enough to give a pretty good idea that they are a bit faster and do not pressure up as quickly. Have also redesigned my XHS barrel contour which is supporting the chamber better. Always tweaking as we go along!!! [/QUOTE]
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.338 Allen Magnum...WOW!
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