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In reading Ringman's post concerning his new wildcat he says something about both thrust affecting velocity.
"For the astute there is something called bolt thrust. I am convinced the .257 SLR will duplicate the velocity of the .257 Wea with less powder because of less bolt trust. Ignorant prejudice is a fun thing."
Lots of things I don't know but what am I missing here?
Is this for real or is it Ringman's assessment?
The Mayans had it right. If you�re going to predict the future, it�s best to aim far beyond your life expectancy, lest you wind up red-faced in a bunker overstocked with Spam and ammo.
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Joined: Jul 2001
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Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,216 Likes: 26 |
It's Ringman's assessment.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Joined: Jan 2006
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Campfire Ranger
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Campfire Ranger
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I'm excited to learn more about this too. Could it be akin to Lee24's jet propulsion effect.......?
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Campfire Ranger
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Campfire Ranger
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Ah yes, Lee24 - the master expert on all things great and small!
Unless someone can reverse or change the laws of physics, less bolt thrust will add exactly 0 fps to velocity. Any excess headspace, less bolt thrust, no lug setback, etc. doesn't do anything unless it is so bad that the case ruptures and pressure is reduced. Then velocity will be lower.
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Campfire Tracker
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Campfire Tracker
Joined: Jan 2003
Posts: 3,471 Likes: 15 |
Case head diameter does effect bolt thrust. As the case head gets bigger, the bolt thrust increases (assuming all else remains the same).
Bolt thrust has z-e-r-o to do with velocity.
Good shootin'. -Al
Forbidden Zoner
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Campfire Outfitter
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Dang!! I knew I wasn't one of the "astute" so thought ol' Ringy was really on to something here.
The Mayans had it right. If you�re going to predict the future, it�s best to aim far beyond your life expectancy, lest you wind up red-faced in a bunker overstocked with Spam and ammo.
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Joined: Nov 2005
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Campfire Ranger
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Campfire Ranger
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The quantity of baked beans you ate last night effects the velocity also. Maybe even at the range........... 
My home is the "sanctuary residence" for my firearms.
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Campfire Outfitter
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The quantity of baked beans you ate last night effects the velocity also. Maybe even at the range........... Even for us "non astute" people?
The Mayans had it right. If you�re going to predict the future, it�s best to aim far beyond your life expectancy, lest you wind up red-faced in a bunker overstocked with Spam and ammo.
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Joined: Dec 2008
Posts: 146
Campfire Member
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Campfire Member
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Posts: 146 |
UMMM.....astute or "ass-toot"...????
sorry, carry on...
Proud member of the Vast Right Wing Conspiracy
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Campfire Outfitter
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Campfire Outfitter
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UMMM.....astute or "ass-toot"...????
sorry, carry on... 
The Mayans had it right. If you�re going to predict the future, it�s best to aim far beyond your life expectancy, lest you wind up red-faced in a bunker overstocked with Spam and ammo.
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Joined: Dec 2008
Posts: 146
Campfire Member
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Campfire Member
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I'm gonna ask my wife what she thinks of "bolt thrust".
She will probably respond with an astute remark about my lack of barrel length.
Proud member of the Vast Right Wing Conspiracy
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Campfire Tracker
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Campfire Tracker
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Maybe we missed where ringman's build is on a straight pull Ross.... Maybe less bolt thrust means the bullet will go faster than the bolt
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Campfire Outfitter
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Campfire Outfitter
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If I were "bolt trust" what would I be?
Snake
That which does not kill us makes us stronger
Friedrich Nietzsche
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Campfire Outfitter
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Maybe we missed where ringman's build is on a straight pull Ross.... Maybe less bolt thrust means the bullet will go faster than the bolt That just might be a winner!
The Mayans had it right. If you�re going to predict the future, it�s best to aim far beyond your life expectancy, lest you wind up red-faced in a bunker overstocked with Spam and ammo.
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