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<blockquote data-quote="brianwinzor" data-source="post: 123559" data-attributes="member: 1067"><p>Greg, Thanks for the information on the burning rate of AR2211 and its temperature insensitivity. Wish ADI would reconsider its decision not to release it anymore. Was Vithtavouri 20N29 slower burning than AR2211?</p><p></p><p>I have considered using 24N41 &amp; 20N29, and spoke to the Vihtavouri Oz agent about 3 months ago, and he said if I ordered at least 3kg of either one, he could include it in the next shipment in about 1 years time. </p><p></p><p>I decided to order the 20N29, as most burning rate charts place 24N41 around the same as AR2218 (H50BMG), and I am mainly interested in something slower. Have you tried 24N41?</p><p></p><p>The 257 Weatherby with the 156 grain ULD is my first serious attempt at a long range hunting rifle on medium game. So even if 20N29 fouls excessively, I should be able to handle it during my normal daily hunting cycle. </p><p></p><p>I certainly don't intend to use the 257W as a long range varmint rifle, as I have several other rifles that can be set up as a specialist long range varmint rifles. In any event there aren't many rabbits here anymore, as when the calici virus was released in 1995, nearly all the rabbits swam over to NZ to escape to safety.He!He!</p><p> </p><p>Out of curiosity, what is the case capacity of the the 7mm/404? As a comparison, I have some new 7mm RUM cases on the shelf waiting for a project, and they hold 114 grains of ball powder (109.5 to the base of the neck).</p></blockquote><p></p>
[QUOTE="brianwinzor, post: 123559, member: 1067"] Greg, Thanks for the information on the burning rate of AR2211 and its temperature insensitivity. Wish ADI would reconsider its decision not to release it anymore. Was Vithtavouri 20N29 slower burning than AR2211? I have considered using 24N41 & 20N29, and spoke to the Vihtavouri Oz agent about 3 months ago, and he said if I ordered at least 3kg of either one, he could include it in the next shipment in about 1 years time. I decided to order the 20N29, as most burning rate charts place 24N41 around the same as AR2218 (H50BMG), and I am mainly interested in something slower. Have you tried 24N41? The 257 Weatherby with the 156 grain ULD is my first serious attempt at a long range hunting rifle on medium game. So even if 20N29 fouls excessively, I should be able to handle it during my normal daily hunting cycle. I certainly don't intend to use the 257W as a long range varmint rifle, as I have several other rifles that can be set up as a specialist long range varmint rifles. In any event there aren't many rabbits here anymore, as when the calici virus was released in 1995, nearly all the rabbits swam over to NZ to escape to safety.He!He! Out of curiosity, what is the case capacity of the the 7mm/404? As a comparison, I have some new 7mm RUM cases on the shelf waiting for a project, and they hold 114 grains of ball powder (109.5 to the base of the neck). [/QUOTE]
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