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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
trying to get into long range shooting with something that wont break the bank
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<blockquote data-quote="Bart B" data-source="post: 551896" data-attributes="member: 5302"><p>There's lots of 'smiths out there who think a box magazine bolt action receiver has to be blueprinted and trued up to the Nth degree to be accurate. Yet folks have done nothing but square up the receiver face with the barrel tenon thread axis, lap the bolt lugs into full contact then square up the bolt face to the tenon thread axis. Lots of slop in the bolt fit as well as the bolt way axis (and therefore, the bolt, too) aren't in perfect alignment with the barrel chamber and bore axis. Rifles built this way have shot the smallest, many-shot long range groups I know of. Which, to me, means that all that truing and blueprinting benefits the 'smiths bank account more than it does the customer's rifle accuracy needs.</p><p></p><p>Note that if receiver stiffness is important to you for your box magazine repeater, neither the Remington nor Savage actions are as stiff as the Winchester 70 ones. The 70's are over twice as stiff as proved in both dynamic bending and enginering rigidity calculations. And the 70's don't twist out of perfect contact with epoxy bedding like all the round ones do. Roiund ones are OK if bullets weighing less than 160 grains are used at muzzle velocities of 3000 fps or less; the barrel torque of these isn't enough to twist round receivers out of perfect bedding.</p></blockquote><p></p>
[QUOTE="Bart B, post: 551896, member: 5302"] There's lots of 'smiths out there who think a box magazine bolt action receiver has to be blueprinted and trued up to the Nth degree to be accurate. Yet folks have done nothing but square up the receiver face with the barrel tenon thread axis, lap the bolt lugs into full contact then square up the bolt face to the tenon thread axis. Lots of slop in the bolt fit as well as the bolt way axis (and therefore, the bolt, too) aren't in perfect alignment with the barrel chamber and bore axis. Rifles built this way have shot the smallest, many-shot long range groups I know of. Which, to me, means that all that truing and blueprinting benefits the 'smiths bank account more than it does the customer's rifle accuracy needs. Note that if receiver stiffness is important to you for your box magazine repeater, neither the Remington nor Savage actions are as stiff as the Winchester 70 ones. The 70's are over twice as stiff as proved in both dynamic bending and enginering rigidity calculations. And the 70's don't twist out of perfect contact with epoxy bedding like all the round ones do. Roiund ones are OK if bullets weighing less than 160 grains are used at muzzle velocities of 3000 fps or less; the barrel torque of these isn't enough to twist round receivers out of perfect bedding. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
trying to get into long range shooting with something that wont break the bank
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