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<blockquote data-quote="PrairieGhost" data-source="post: 159024" data-attributes="member: 704">I had one like that 15 years ago.&nbsp; Evidently the chamber reamer at the factory was chipiped and it left a ring that was so bad it cut the brass in half.&nbsp; I had a Mosberg that I polished.&nbsp; A new rifle I would not gamble with doing myself and letting Remington off the hook for warranty.&nbsp; Send it in and I am sure they will fix it.&nbsp; Once your chamber is within SAMI specs you should be able to get six or eight loadings from your brass.&nbsp; Even though the magnums like the 7mm headspace off the belt you should still set your dies so you don't move the shoulder more than .002 inches when resizing.&nbsp; I have mine set at .001 inch.&nbsp; Tip a candle to the side until it smokes, and smoke a case&nbsp;&nbsp; head.&nbsp; Raise the ram on your press and screw the sizing die in until it contacts the shell holder.&nbsp; Screw the die out 1/2 turn and resize your brass.&nbsp; The smoked shoulder should still have a flat black appearance.&nbsp; If it's shiny black then back the die out further and smoke another case head.&nbsp; If it is flat black turn your die down 1/8 turn.&nbsp; Keep making 1/8 down turns until the smoke on the case head looks shiny.&nbsp; Once it has a shiny appearance back out 1/16 turn.&nbsp; I am sitting in the hospital with my wife that had spinal fusion, so can't get at my owners manual to see how much of a turn you need to make per .001 inch.&nbsp; That information should be with your dies.&nbsp; My old memory can't remember that right now. If you follow the directions for setting your dies that came with your dies you will be anywhere from .001 to .005 off from your chamber.&nbsp; That would only give you two or three reloads out of your brass.</blockquote>

[QUOTE="PrairieGhost, post: 159024, member: 704"] I had one like that 15 years ago. Evidently the chamber reamer at the factory was chipiped and it left a ring that was so bad it cut the brass in half. I had a Mosberg that I polished. A new rifle I would not gamble with doing myself and letting Remington off the hook for warranty. Send it in and I am sure they will fix it. Once your chamber is within SAMI specs you should be able to get six or eight loadings from your brass. Even though the magnums like the 7mm headspace off the belt you should still set your dies so you don't move the shoulder more than .002 inches when resizing. I have mine set at .001 inch. Tip a candle to the side until it smokes, and smoke a case head. Raise the ram on your press and screw the sizing die in until it contacts the shell holder. Screw the die out 1/2 turn and resize your brass. The smoked shoulder should still have a flat black appearance. If it's shiny black then back the die out further and smoke another case head. If it is flat black turn your die down 1/8 turn. Keep making 1/8 down turns until the smoke on the case head looks shiny. Once it has a shiny appearance back out 1/16 turn. I am sitting in the hospital with my wife that had spinal fusion, so can't get at my owners manual to see how much of a turn you need to make per .001 inch. That information should be with your dies. My old memory can't remember that right now. If you follow the directions for setting your dies that came with your dies you will be anywhere from .001 to .005 off from your chamber. That would only give you two or three reloads out of your brass. [/QUOTE]

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