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Case neck length
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<blockquote data-quote="sable tireur" data-source="post: 2997385" data-attributes="member: 27307"><p>The reality is that there is very little confirmation of any facts regarding neck length and throat erosion. We can't crawl into the barrel to observe any action while it may be taking place and we can't confirm that it's not the flame point or heat of explosion from differing powders which causes erosion. Then there are a few other possibilities as well which can contribute to throat erosion. Plus the degree of erosion will have lesser or greater effect on the owner when they choose to accept or reject the amount the might see using a borescope. </p><p></p><p>As seen below, are examples of both short and long neck length cartridges. You can also include the 7mm WSM which was initially rejected for it's short neck causing us to create a wildcat 7mm-300WSM to have a longer neck. Fussy shooters. Once again though the the 7mm WSM is being received with open arms as a perfectly viable intermediate power cartridge. </p><p></p><p>The .243 is wildly popular while the longer necked 6mm Remington has seen rejection for very odd reasons. I chose to use a variation of the 6mm Remington named the 6mm Crusader. This case retains the long neck but increases the shoulder angle to 32 degrees. I also reject the criticism of the .243 WSSM and continue to shoot it as a hunting and longer range target cartridge. </p><p></p><p>Bear in mind that it's been the lack of better designed powder and primers which contributed to those claims of barrel burner. Manufacturers also went to great lengths to deceive us by using lighter bullets and more powder to achieve those startling claims of high velocities which contributed to shorter barrel life. </p><p></p><p>It's not any one factor but several which will essentially make a difference.</p><p></p><p>[ATTACH=full]529603[/ATTACH]</p><p>As a caliber, the 6mm has the least number of commercial members. Starting at left is the ill-fated .243 WSSM, .243 Win., 6mm Rem. (originally the .244 Rem.), and .240 Weatherby.</p></blockquote><p></p>
[QUOTE="sable tireur, post: 2997385, member: 27307"] The reality is that there is very little confirmation of any facts regarding neck length and throat erosion. We can't crawl into the barrel to observe any action while it may be taking place and we can't confirm that it's not the flame point or heat of explosion from differing powders which causes erosion. Then there are a few other possibilities as well which can contribute to throat erosion. Plus the degree of erosion will have lesser or greater effect on the owner when they choose to accept or reject the amount the might see using a borescope. As seen below, are examples of both short and long neck length cartridges. You can also include the 7mm WSM which was initially rejected for it's short neck causing us to create a wildcat 7mm-300WSM to have a longer neck. Fussy shooters. Once again though the the 7mm WSM is being received with open arms as a perfectly viable intermediate power cartridge. The .243 is wildly popular while the longer necked 6mm Remington has seen rejection for very odd reasons. I chose to use a variation of the 6mm Remington named the 6mm Crusader. This case retains the long neck but increases the shoulder angle to 32 degrees. I also reject the criticism of the .243 WSSM and continue to shoot it as a hunting and longer range target cartridge. Bear in mind that it's been the lack of better designed powder and primers which contributed to those claims of barrel burner. Manufacturers also went to great lengths to deceive us by using lighter bullets and more powder to achieve those startling claims of high velocities which contributed to shorter barrel life. It's not any one factor but several which will essentially make a difference. [ATTACH type="full"]529603[/ATTACH] As a caliber, the 6mm has the least number of commercial members. Starting at left is the ill-fated .243 WSSM, .243 Win., 6mm Rem. (originally the .244 Rem.), and .240 Weatherby. [/QUOTE]
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