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Bart B. · March 10, 2014, 08:24 AM

Jimro, I'd rather you used something shaped and held like a rifle barrel. Round and thinner at one end tapering to thicker at the other end that's fixed in place. The back half of a barrel is thicker and heavier than its front half. And the end of the back half is fixed while the end of its front is free. No way will each half of a barrel whip the same if a pressure point's put mid point. That point will also move around unless something external to the rifle holds it fixed.

Note how the stock's fore end whips vertically when s rifle's fired in the link below:

http://www.varmintal.com/amode.htm

There's no way a pressure point on a barrel at the stock's tip stays the same when a bolt action rifle's fired hand held in any position. Also proof that any external force at that point will change the pressure and its force axis on that barrel. If there was a pressure point on the barrel from the fore end tip when it fired, when both the barrel and stock part company as they flex, the barrel's vibration and whip characteristics will change.

M1 and M14 rifles tested in accuracy cradles for accuracy by the service rifle team shops showed different amounts of accuracy depending on how much down pull the barrel had to the stock by the fit of the barrel band to the stock ferrule. They shot most accurate from that free-recoiling machine rest with about 30 pounds of down force for M1's and a bit less for M14's. The best barrels in them shot good lots of commercial match ammo into well under 2 inches at 300 yards; clip (magazine) after clip (magazine) and so on. And grouped each string of fire on top of each other. Nobody shot them that well off their shoulders and had to change zeros with different amounts of sling tension when slung up in prone. That sling tension changed the force on the barrel through the stock's fore end where the ferrule held the barrel band down. I've been there and done that with super-accurate 7.62 Garands.

March 10, 2014, 08:24 AM	#25
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	Jimro, I'd rather you used something shaped and held like a rifle barrel. Round and thinner at one end tapering to thicker at the other end that's fixed in place. The back half of a barrel is thicker and heavier than its front half. And the end of the back half is fixed while the end of its front is free. No way will each half of a barrel whip the same if a pressure point's put mid point. That point will also move around unless something external to the rifle holds it fixed. Note how the stock's fore end whips vertically when s rifle's fired in the link below: http://www.varmintal.com/amode.htm There's no way a pressure point on a barrel at the stock's tip stays the same when a bolt action rifle's fired hand held in any position. Also proof that any external force at that point will change the pressure and its force axis on that barrel. If there was a pressure point on the barrel from the fore end tip when it fired, when both the barrel and stock part company as they flex, the barrel's vibration and whip characteristics will change. M1 and M14 rifles tested in accuracy cradles for accuracy by the service rifle team shops showed different amounts of accuracy depending on how much down pull the barrel had to the stock by the fit of the barrel band to the stock ferrule. They shot most accurate from that free-recoiling machine rest with about 30 pounds of down force for M1's and a bit less for M14's. The best barrels in them shot good lots of commercial match ammo into well under 2 inches at 300 yards; clip (magazine) after clip (magazine) and so on. And grouped each string of fire on top of each other. Nobody shot them that well off their shoulders and had to change zeros with different amounts of sling tension when slung up in prone. That sling tension changed the force on the barrel through the stock's fore end where the ferrule held the barrel band down. I've been there and done that with super-accurate 7.62 Garands. Last edited by Bart B.; March 10, 2014 at 09:02 AM.