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Rifles, Reloading, Optics, Equipment
Reloading
Body die or full length sizing die to bump shoulder .002
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<blockquote data-quote="Mike Matteson" data-source="post: 2186176" data-attributes="member: 101791"><p>If I have understand the process for bumping back your shoulder is done after firing the case. It's done to allow the case to fit back inside the chamber without your case being fully size back to spec., but to your chamber in that rifle. So as you are loading or chambering a case into the action the bolt closes smoothly for one. This is also done to reduce the case stretch, and fit your chamber more clostly. Normally full length sizing dies set the case back to factory spec so it will fit any rifle that is chamber for that cartridge. Each chamber is or can be a little difference. So that where the word, fire forming comes in. It should increase your accuracies or grouping some. Part of the problem here is I normally shoot belted Mag. They are spaced by the belt not shoulder. I hope this helps, and I haven't miss lead you. I'll will hear if I did (that's fine too) or somebody else can add to this. That the last thing I don't want to do is mislead somebody.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 2186176, member: 101791"] If I have understand the process for bumping back your shoulder is done after firing the case. It's done to allow the case to fit back inside the chamber without your case being fully size back to spec., but to your chamber in that rifle. So as you are loading or chambering a case into the action the bolt closes smoothly for one. This is also done to reduce the case stretch, and fit your chamber more clostly. Normally full length sizing dies set the case back to factory spec so it will fit any rifle that is chamber for that cartridge. Each chamber is or can be a little difference. So that where the word, fire forming comes in. It should increase your accuracies or grouping some. Part of the problem here is I normally shoot belted Mag. They are spaced by the belt not shoulder. I hope this helps, and I haven't miss lead you. I'll will hear if I did (that's fine too) or somebody else can add to this. That the last thing I don't want to do is mislead somebody. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Body die or full length sizing die to bump shoulder .002
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