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Rifles, Reloading, Optics, Equipment
Gunsmithing
How important is truing threads on a rem 700 action?
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<blockquote data-quote="nvschütze" data-source="post: 1827302" data-attributes="member: 110896"><p>All of that I cannot tell you. My late 'smith just told me the muzzle was 0.018" out of alignment with the receiver rod he put through the receiver to verify if the original threads were true along the center-line of the receiver as it set trued-up in his lathe.</p><p></p><p>The receiver was a long-action Montana Rifle Company M1999, which has an integral lug. The receiver mouth, I assume, was trued square most likely when the rifle was first built in Fall 2004 in 300WSM. It was rebuilt in Spring 2012 as a long-action mildcat of my own design, the .300 Nevada Desert Magnum. Accuracy went from half-minute at best (SAAMI 300WSM in a stainless Krieger) to many under quarter-minute (<em>very</em> close neck in a stainless Hart) if I didn't screw it up. The barrel came to my 'smith as a blank; he did everything to it after receipt. The finished rifle was such an improvement over the original iteration. I had about $9,000 in it by the time I gave it away to a friend from high school (grads in 1976). He's lefthanded, too, so it was an easy decision to give it to a good friend of over forty-four years. I also gave him a lefty $4500 hunting rifle in a .358-caliber mildcat. All the dies, powders, tools, bullets-- <em>everything</em> for him to start forming brass and reloading ammo for each.</p><p></p><p>The .300 Nevada Desert Magnum is a ".30-06 Springfield Magnum." The .358 Sierra Stomper is a ".35 Whelen Magnum." The .300 is very accurate. The total neck clearance on the .300, <em>without</em> turning, is 0.001 inches. <em>Really</em> aligns the bullet to the bore. Neck clearance on the .358" is 0.005 inches-- better than the SAAMI at 0.006 inches.</p><p></p><p>The .358 is a sledgehammer: 4092 foot-pounds of muzzle energy at 2715 fps when using a 250-grain bullet. You get those numbers when using 62.0 grains of IMR-4320. I wanted 4000 foot-pounds when I designed it. I believe the charge can go higher but it gave me what I wanted, so no reason to push it. An elk fallen to the .358" shell would never know the difference...</p></blockquote><p></p>
[QUOTE="nvschütze, post: 1827302, member: 110896"] All of that I cannot tell you. My late 'smith just told me the muzzle was 0.018" out of alignment with the receiver rod he put through the receiver to verify if the original threads were true along the center-line of the receiver as it set trued-up in his lathe. The receiver was a long-action Montana Rifle Company M1999, which has an integral lug. The receiver mouth, I assume, was trued square most likely when the rifle was first built in Fall 2004 in 300WSM. It was rebuilt in Spring 2012 as a long-action mildcat of my own design, the .300 Nevada Desert Magnum. Accuracy went from half-minute at best (SAAMI 300WSM in a stainless Krieger) to many under quarter-minute ([I]very[/I] close neck in a stainless Hart) if I didn't screw it up. The barrel came to my 'smith as a blank; he did everything to it after receipt. The finished rifle was such an improvement over the original iteration. I had about $9,000 in it by the time I gave it away to a friend from high school (grads in 1976). He's lefthanded, too, so it was an easy decision to give it to a good friend of over forty-four years. I also gave him a lefty $4500 hunting rifle in a .358-caliber mildcat. All the dies, powders, tools, bullets-- [I]everything[/I] for him to start forming brass and reloading ammo for each. The .300 Nevada Desert Magnum is a ".30-06 Springfield Magnum." The .358 Sierra Stomper is a ".35 Whelen Magnum." The .300 is very accurate. The total neck clearance on the .300, [I]without[/I] turning, is 0.001 inches. [I]Really[/I] aligns the bullet to the bore. Neck clearance on the .358" is 0.005 inches-- better than the SAAMI at 0.006 inches. The .358 is a sledgehammer: 4092 foot-pounds of muzzle energy at 2715 fps when using a 250-grain bullet. You get those numbers when using 62.0 grains of IMR-4320. I wanted 4000 foot-pounds when I designed it. I believe the charge can go higher but it gave me what I wanted, so no reason to push it. An elk fallen to the .358" shell would never know the difference... [/QUOTE]
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How important is truing threads on a rem 700 action?
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