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Rifles, Reloading, Optics, Equipment
Reloading
7mm Rem Mag Case Stretch
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<blockquote data-quote="VinceMule" data-source="post: 2886797" data-attributes="member: 122164"><p>I worry more about the dimension at the web. I have seen rounds loaded for 5 years, "normalize" with the brass springing back out with the result of not being able to chamber in the barrel.</p><p></p><p>Due to a mis fit between brass, dies, and chamber, often we are forced to push the shoulder back more than we like, and .006 is not uncommon at all in order to get the brass to cycle in the chamber.</p><p></p><p>Keep your ammo fresh if possible, from year to year. I will generally load 100 rounds after I have verified my load 3 X, but I leave the bullets seated .100 long, seating 20 or so rounds to the ogive length prior to the hunting season or as needed, then cycle the rounds through the gun. All rounds were fired in that chamber when new, if the brass was previously fired.</p><p></p><p>The smaller the tolerance between the new brass and chamber dimension, the more apt you are to get into trouble from Brass expanding out after sizing, "normalizing". This whole issue of Brass spring back is one heck of a can of worms.</p></blockquote><p></p>
[QUOTE="VinceMule, post: 2886797, member: 122164"] I worry more about the dimension at the web. I have seen rounds loaded for 5 years, "normalize" with the brass springing back out with the result of not being able to chamber in the barrel. Due to a mis fit between brass, dies, and chamber, often we are forced to push the shoulder back more than we like, and .006 is not uncommon at all in order to get the brass to cycle in the chamber. Keep your ammo fresh if possible, from year to year. I will generally load 100 rounds after I have verified my load 3 X, but I leave the bullets seated .100 long, seating 20 or so rounds to the ogive length prior to the hunting season or as needed, then cycle the rounds through the gun. All rounds were fired in that chamber when new, if the brass was previously fired. The smaller the tolerance between the new brass and chamber dimension, the more apt you are to get into trouble from Brass expanding out after sizing, "normalizing". This whole issue of Brass spring back is one heck of a can of worms. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm Rem Mag Case Stretch
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