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Rifles, Reloading, Optics, Equipment
Reloading
Maximum case length.
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<blockquote data-quote="fguffey" data-source="post: 1871941" data-attributes="member: 113511"><p>Necking the 300 Win MAG neck down to 7MM will lengthen the neck, I know, reloaders claim the neck gets thicker and or thinner when necked up and or down. And then there is the 'think about it', the neck on the 300 Win Mag is short, there is no disadvantage to a longer neck. </p><p></p><p>SO? I suggest you make an attempt to determine the length of the chamber from the end of the neck to the bolt face. there has to be something wrong with my method and or technique because no one does it. I would take a longer case like the 300 Weatherby and form the case to 7mm300 Win Mag. I am lucky because I can not move the shoulder back meaning all of that extra case/brass has to go out the front. when that happens the newly formed case neck gets longer, when I want to know the length of the chamber I start trimming the neck of the newly formed case until it chambers without turning the mouth of the case in to a crimp.</p><p></p><p>And then there is the length of the chamber from the beginning of the rifling to the bolt face. I want to know where the rifling is located because I am the fan of the bullet jump, I want my bullets to have that running start. It makes me nervous when the bullet is setting against the rifling when I pull the trigger. </p><p></p><p>F. Guffey</p></blockquote><p></p>
[QUOTE="fguffey, post: 1871941, member: 113511"] Necking the 300 Win MAG neck down to 7MM will lengthen the neck, I know, reloaders claim the neck gets thicker and or thinner when necked up and or down. And then there is the 'think about it', the neck on the 300 Win Mag is short, there is no disadvantage to a longer neck. SO? I suggest you make an attempt to determine the length of the chamber from the end of the neck to the bolt face. there has to be something wrong with my method and or technique because no one does it. I would take a longer case like the 300 Weatherby and form the case to 7mm300 Win Mag. I am lucky because I can not move the shoulder back meaning all of that extra case/brass has to go out the front. when that happens the newly formed case neck gets longer, when I want to know the length of the chamber I start trimming the neck of the newly formed case until it chambers without turning the mouth of the case in to a crimp. And then there is the length of the chamber from the beginning of the rifling to the bolt face. I want to know where the rifling is located because I am the fan of the bullet jump, I want my bullets to have that running start. It makes me nervous when the bullet is setting against the rifling when I pull the trigger. F. Guffey [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Maximum case length.
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