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Rifles, Reloading, Optics, Equipment
Reloading
"scoring?" on 308 brass after sizing?
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<blockquote data-quote="AZShooter" data-source="post: 871836" data-attributes="member: 5219"><p>I believe your scoring was due to your: " Then ran the case up into the die with no lube"</p><p>It doesn't take much to begin scraping off a few bits of brass which sticks to the sizer die walls. Once this happens the scoring will be on every case till you clean up the inside of the die. </p><p></p><p>Putting a dry case into the die is a mistake. Subsequent cases sent into die will remove all remants of lube and then you will have a case stuck in the die! It happened to me when I first started loading and you can believe I paid attention to details to prevent that from happening again! It is a real pain to remove. </p><p></p><p>Proper sizing with the die you are using IS partial FL sizing. It will extend brass life and is the proper way to resize brass. </p><p></p><p>I always wondered why RCBS would have the following instructions for their FL dies: </p><p></p><p>"Screw the sizer die into the press until the die touches the shell holder when the shell holder is brought up to the top of the press stroke. Be sure all play is removed from the press leverage system. To do this, adjust the die as above, lower the shell holder and set the die 1/8 to ¼ turn further down so that the press cams over center. Set the large lock nut and you are ready to size. "</p><p></p><p>This is very wrong unless you have a very tight headspaced chamber. To do so will work the brass and will cause excessive stretching of the case requiring more frequent trimming and more importantly eventually cause case head separation.</p><p></p><p> The proper approach is to size enough so the shoulder/body taper is slightly reduced to fit the chamber with little or no bolt closure resistance. This is what we reloaders call partial full length sizing. You can size less so there is some resistance it is up to you. Personally I prefer no resistance especially with a hunting rifle. </p><p></p><p>If you want to neck size only, get a good bushing die that only sizes the necks. You can get away with no body/shoulder sizing for a few firings then the brass will get too tight and you will have to partial resize the brass anyway.</p><p></p><p>Unfortunately not every instructional section in a Loading manual or instructions that come with the dies explain how to use the dies properly. Hope this helps. I like to help beginners as do others that post here. If you have more detailed questions all you have to do is ask. </p><p></p><p>Ross</p></blockquote><p></p>
[QUOTE="AZShooter, post: 871836, member: 5219"] I believe your scoring was due to your: " Then ran the case up into the die with no lube" It doesn't take much to begin scraping off a few bits of brass which sticks to the sizer die walls. Once this happens the scoring will be on every case till you clean up the inside of the die. Putting a dry case into the die is a mistake. Subsequent cases sent into die will remove all remants of lube and then you will have a case stuck in the die! It happened to me when I first started loading and you can believe I paid attention to details to prevent that from happening again! It is a real pain to remove. Proper sizing with the die you are using IS partial FL sizing. It will extend brass life and is the proper way to resize brass. I always wondered why RCBS would have the following instructions for their FL dies: "Screw the sizer die into the press until the die touches the shell holder when the shell holder is brought up to the top of the press stroke. Be sure all play is removed from the press leverage system. To do this, adjust the die as above, lower the shell holder and set the die 1/8 to ¼ turn further down so that the press cams over center. Set the large lock nut and you are ready to size. " This is very wrong unless you have a very tight headspaced chamber. To do so will work the brass and will cause excessive stretching of the case requiring more frequent trimming and more importantly eventually cause case head separation. The proper approach is to size enough so the shoulder/body taper is slightly reduced to fit the chamber with little or no bolt closure resistance. This is what we reloaders call partial full length sizing. You can size less so there is some resistance it is up to you. Personally I prefer no resistance especially with a hunting rifle. If you want to neck size only, get a good bushing die that only sizes the necks. You can get away with no body/shoulder sizing for a few firings then the brass will get too tight and you will have to partial resize the brass anyway. Unfortunately not every instructional section in a Loading manual or instructions that come with the dies explain how to use the dies properly. Hope this helps. I like to help beginners as do others that post here. If you have more detailed questions all you have to do is ask. Ross [/QUOTE]
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"scoring?" on 308 brass after sizing?
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