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Rifles, Reloading, Optics, Equipment
Reloading
N570 and the 6.5x284.
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<blockquote data-quote="VinceMule" data-source="post: 3046100" data-attributes="member: 122164"><p>PO Ackley spoke of an "interference Point" where you draw lines on the shoulder, and the further back in the case neck the lines intersect, the less throat wear occurs. I verified this theory by comparing the 243 Win and the 6 Remington, then again in making 6 XC cases with .400 length necks with corresponding chamber neck length. Shooting H4350 Exclusively in the 6 XC long neck, the leade only grew .007 in 900 wounds with a corresponding throat dia. only increasing .0002. I am still shooting the barrel. I formed the brass from Lapua Palma brass and have 300 firings on 30 pieces of brass using Rem 7 1/2 primers, Sierra 107, Hornady 105 A max, Berger 105-108s.</p><p></p><p>Since AA2700 has a very similar burning rate of H4350 with a MUCH cooler Heat Index, I am going to try 2700 next.</p><p></p><p>At 900 rounds, the throat still looks newish, while my 6 Dasher of the same mileage looks to have some serious wear with H4895 using Berger 105-108.</p></blockquote><p></p>
[QUOTE="VinceMule, post: 3046100, member: 122164"] PO Ackley spoke of an "interference Point" where you draw lines on the shoulder, and the further back in the case neck the lines intersect, the less throat wear occurs. I verified this theory by comparing the 243 Win and the 6 Remington, then again in making 6 XC cases with .400 length necks with corresponding chamber neck length. Shooting H4350 Exclusively in the 6 XC long neck, the leade only grew .007 in 900 wounds with a corresponding throat dia. only increasing .0002. I am still shooting the barrel. I formed the brass from Lapua Palma brass and have 300 firings on 30 pieces of brass using Rem 7 1/2 primers, Sierra 107, Hornady 105 A max, Berger 105-108s. Since AA2700 has a very similar burning rate of H4350 with a MUCH cooler Heat Index, I am going to try 2700 next. At 900 rounds, the throat still looks newish, while my 6 Dasher of the same mileage looks to have some serious wear with H4895 using Berger 105-108. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
N570 and the 6.5x284.
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