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300 Remington Ultra Magnum ABS Barrel Review By Michael Eichele
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<blockquote data-quote="Michael Eichele" data-source="post: 316897" data-attributes="member: 1007"><p>1st off thank you.</p><p></p><p>ABS did not rebore the barrel. They had a barrel maker they use barrel blanks from do the job. I forget the name of the outfit but they are in Prescott Arizona. Pederson or Pedersen rings a bell.</p><p></p><p>As far as reboring it, it is best to rebore ONLY if the barrel is a cut rifled barrel and NOT a button pulled barrel. The ABS barrel when it was a 300 RUM barrel was originally a cut rifled barrel from Rock Creek. Mike D. at ABS told me that reboring a button pulled barrel is possible but only after some type of heat/stress relief. Personally, I dont know that I would trust it but then again I am not a metalurgist. Mike seems to know alot about metal and rifle barrels. On the flip side of the coin, Lilja does not recommend reboring a button pulled barrel. I guess you would have to find out if your barrel was cut rifled or button pulled and if it was a button pulled barrel do some research on altering the structure of the steel before reboring it.</p><p></p><p>In case you dont know, with cut rifle barrels, material is removed or cut away from the bore to form the grooves. With a button pulled barrel the grooves are made by displacing metal instead of removing it. This is why you dont want to alter the outside diameter oe inside for that matter of a BP barrel after the bore is finished. The ID can actually grow due to this displacement from the tension inside the metal. With a cut rifle barrel there is not that tension in the metal to change the ID or any other part of the barrel when the metal is altered be it changing the OD or reboring it.</p><p></p><p>I hope that helps!</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 316897, member: 1007"] 1st off thank you. ABS did not rebore the barrel. They had a barrel maker they use barrel blanks from do the job. I forget the name of the outfit but they are in Prescott Arizona. Pederson or Pedersen rings a bell. As far as reboring it, it is best to rebore ONLY if the barrel is a cut rifled barrel and NOT a button pulled barrel. The ABS barrel when it was a 300 RUM barrel was originally a cut rifled barrel from Rock Creek. Mike D. at ABS told me that reboring a button pulled barrel is possible but only after some type of heat/stress relief. Personally, I dont know that I would trust it but then again I am not a metalurgist. Mike seems to know alot about metal and rifle barrels. On the flip side of the coin, Lilja does not recommend reboring a button pulled barrel. I guess you would have to find out if your barrel was cut rifled or button pulled and if it was a button pulled barrel do some research on altering the structure of the steel before reboring it. In case you dont know, with cut rifle barrels, material is removed or cut away from the bore to form the grooves. With a button pulled barrel the grooves are made by displacing metal instead of removing it. This is why you dont want to alter the outside diameter oe inside for that matter of a BP barrel after the bore is finished. The ID can actually grow due to this displacement from the tension inside the metal. With a cut rifle barrel there is not that tension in the metal to change the ID or any other part of the barrel when the metal is altered be it changing the OD or reboring it. I hope that helps! [/QUOTE]
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