Post by texasdude74 on Nov 23, 2018 13:52:43 GMT -5
“BHA billet guns look up to the task.”
----texasdude74
*****
texasdude74....
A billet is hot process for forming steel into bars, usually by casting or rolling. A billet does not bring the bar close to final shape, which drop forging does and investment cast does moreso. If Big Horn Armory manufactures complete rifles from billet, it spends a terrific amount of tool time to manufacture all the necessary parts from blocks of steel. If so, and providing it addresses heat treatment challenges with the experience and acumen of, say, Ruger and Remington, while maintaining a tight tolerance package, I reckon finished rifle retails equal to a new car.
Metallurgical brilliance should not displace design. To my knowledge, there is no such thing as a lever action remotely as strong as the bolt action; specifically, the strongest lever action cannot approach the strongest bolt action. While the internet is a magnet for for unsubstantiated information presented as fact, Singleactions needn’t be, and shouldn’t be. And Singleactions won’t countenance personal or social bile, a.k.a. bigotry.
Let’s have a Country Simple look at pressure. Modern steels and heat treatments have allowed to makers of the lever action to increase chamber pressure in their designs. Over original black powder designs and early smokeless powder designs, these rises have been substantial. The 40,000 psi figure characterizes a practical WORKING CEILING for metallurgy and the limitations or cartridge brass to seal a chamber. Proof ammo expects a 40% increase, or 56,000 psi. (I use these figures as examples to illustrate safety margins which calculate into gun design and manufacturing.) Within the past couple decades, pressure figures have risen for certain firearms and cartridges, up to and including 60,000 or 65,000 psi.
Two major problems arise at 60,000-65,000 psi
1) PROOF AMMO
To proof a 65,000 psi load, the proof round develops 91,000 psi. Pressure measuring equipment loses track around 90,000 psi. Stuff gets crazy. Brass fails.
2) HANDLOADING
The handloader wants to reload fired brass. After all, the case is the most expensive part in the manufacture of ammunition, and that’s what’s left over after we shoot. Not all brass resists pressure equally. And all brass fatigues in reloading. Brass forced to contain extreme pressure rapidly fatigues. The only hedge against premature failure----aside from loading at more moderate pressure----is for the case to closely fit the chamber. Close chamber fit is not always possible or practical. Indeed, many action designs depend on some looseness for smooth chambering and COMPLETE LOCKUP.
Aside from the limited receiver strength of lever actions, the receiver ring and barrel tenon is limited as to the cartridge diameter it can securely surround.
David Bradshaw
----texasdude74
*****
texasdude74....
A billet is hot process for forming steel into bars, usually by casting or rolling. A billet does not bring the bar close to final shape, which drop forging does and investment cast does moreso. If Big Horn Armory manufactures complete rifles from billet, it spends a terrific amount of tool time to manufacture all the necessary parts from blocks of steel. If so, and providing it addresses heat treatment challenges with the experience and acumen of, say, Ruger and Remington, while maintaining a tight tolerance package, I reckon finished rifle retails equal to a new car.
Metallurgical brilliance should not displace design. To my knowledge, there is no such thing as a lever action remotely as strong as the bolt action; specifically, the strongest lever action cannot approach the strongest bolt action. While the internet is a magnet for for unsubstantiated information presented as fact, Singleactions needn’t be, and shouldn’t be. And Singleactions won’t countenance personal or social bile, a.k.a. bigotry.
Let’s have a Country Simple look at pressure. Modern steels and heat treatments have allowed to makers of the lever action to increase chamber pressure in their designs. Over original black powder designs and early smokeless powder designs, these rises have been substantial. The 40,000 psi figure characterizes a practical WORKING CEILING for metallurgy and the limitations or cartridge brass to seal a chamber. Proof ammo expects a 40% increase, or 56,000 psi. (I use these figures as examples to illustrate safety margins which calculate into gun design and manufacturing.) Within the past couple decades, pressure figures have risen for certain firearms and cartridges, up to and including 60,000 or 65,000 psi.
Two major problems arise at 60,000-65,000 psi
1) PROOF AMMO
To proof a 65,000 psi load, the proof round develops 91,000 psi. Pressure measuring equipment loses track around 90,000 psi. Stuff gets crazy. Brass fails.
2) HANDLOADING
The handloader wants to reload fired brass. After all, the case is the most expensive part in the manufacture of ammunition, and that’s what’s left over after we shoot. Not all brass resists pressure equally. And all brass fatigues in reloading. Brass forced to contain extreme pressure rapidly fatigues. The only hedge against premature failure----aside from loading at more moderate pressure----is for the case to closely fit the chamber. Close chamber fit is not always possible or practical. Indeed, many action designs depend on some looseness for smooth chambering and COMPLETE LOCKUP.
Aside from the limited receiver strength of lever actions, the receiver ring and barrel tenon is limited as to the cartridge diameter it can securely surround.
David Bradshaw