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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Free float a Model 70 Featherweight?
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<blockquote data-quote="Bart B" data-source="post: 801234" data-attributes="member: 5302"><p>There's no way that pressure on the barrel will be "even" if "even" means constant and never changing pressure all the time.</p><p></p><p>It'll change depending how much strain's put on the fore end by the shooters position. There'll be more when the rifle's benched with some support under the fore end and the shooter's bearing down on the stock compared to shooting offhand (standing) without a sling and the off hand is holding the rifle under the receiver. When a sling's used, there are other forces causing the fore end to bend.</p><p></p><p>There's an easy way to see how this happens. It requires a dial indicator be clamped to the barrel with its plunger on the stock fore end. With the fore end clear of all contact with the barrel, watch its dial move with different holding ways on the fore end. Or put an optical collimator in the muzzle, adjust the scope to zero on it then watch the collimater reticule through the scope as you put different amounts of pressure on the fore end that's hard padded to the barrel.</p><p></p><p>Those believing a hard pressure pad at the fore end tip pushing on the barrel is OK may well think it's OK for any other part of the barrel to rest against a hard object and great accuracy is maintained.</p><p></p><p>Ever watched someone show how their rifle held point up will let a dollar bill slip between the barrel and fore end? Then watched the same test performed with the rifle horizontal in a cradle holding the butt stock at one end and the other supporting the fore end and that dollar bill will no longer slide between barrel and fore end? Which part bent the most; barrel or fore end?</p></blockquote><p></p>
[QUOTE="Bart B, post: 801234, member: 5302"] There's no way that pressure on the barrel will be "even" if "even" means constant and never changing pressure all the time. It'll change depending how much strain's put on the fore end by the shooters position. There'll be more when the rifle's benched with some support under the fore end and the shooter's bearing down on the stock compared to shooting offhand (standing) without a sling and the off hand is holding the rifle under the receiver. When a sling's used, there are other forces causing the fore end to bend. There's an easy way to see how this happens. It requires a dial indicator be clamped to the barrel with its plunger on the stock fore end. With the fore end clear of all contact with the barrel, watch its dial move with different holding ways on the fore end. Or put an optical collimator in the muzzle, adjust the scope to zero on it then watch the collimater reticule through the scope as you put different amounts of pressure on the fore end that's hard padded to the barrel. Those believing a hard pressure pad at the fore end tip pushing on the barrel is OK may well think it's OK for any other part of the barrel to rest against a hard object and great accuracy is maintained. Ever watched someone show how their rifle held point up will let a dollar bill slip between the barrel and fore end? Then watched the same test performed with the rifle horizontal in a cradle holding the butt stock at one end and the other supporting the fore end and that dollar bill will no longer slide between barrel and fore end? Which part bent the most; barrel or fore end? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Free float a Model 70 Featherweight?
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