7.62X51 cases have less internal volume than commercial .308 Win cases and require smaller powder charges to reach similar pressures - or sticky and broken gun parts if loaded with straight up .308 Win load data. The cases are heavier built due to the abuse from machine gun actions superimposed on the chamber pressure.
The B&T RBS NATO is part of their Reduced Back pressure System suppressor line. It maintains full-size decibel reduction at the muzzle, while dramatically reducing backpressure and at-the-ear noise. The reduction in back pressure allows for the host firearm to cycle naturally without added wear and tear on the internals. Additionally, it …
I've checked every reloading manual I can easily get my hands on (including the Lyman Cast Bullets 4th Ed.), and Googled pretty extensively. Everywhere I can find load data for 7.62x54R, it will give me velocities for min and max loads, but pressure info seems to be nonexistant.
Swerzcek agrees. "The first 7.62×51 NATO pressures were retrieved by copper crusher. Current piezo-electric reads on .308 ammo are more precise and repeatable, often higher.". Popular in National Match competition, the .308 yields about 4½ inches to 10-mph wind at 600 yards.
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You see back in the stone age before piezo transducers were invented, pressures were measured using a crusher and anvil system and they weren't measured in PSI They were measured in CUP (Copper units of Pressure) The Army Ordnance Corps used this system of measuring pressure and civilian manufacturers used slightly …
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Above, it was noted there is evidence that crusher's underestimation of pressure grows ever worse as the true pressure rises. One curious side effect is that rifles proofed with …
mauser 98 (7.62 conversion) During a brief visit to a local gun store in my area I ran across a mod. 98 mauser that was converted into 7.62. The top front of the …
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The 7.62 Nato round runs at the same pressure as the 308 Win. You will be fine shooting 308 Win ammo in your DPMS. Callem and ask! The pressure in the .308 and the 7.62 virtually identical. The 308 runs at 62Kpsi the 7.62 Nato runs at 50K CUP not psi which equates to about 62K psi.
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The old pressure testing method used for the 7.62 NATO cartridge started out life in the 1950s and is still published today in the US Army Technical Manuals. The …
.223/5.56 & .308/7.62 chamber pressure difference questions Handloading, Reloading, and Bullet Casting
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Yes, it's 7.62 NATO vs .308 Winchester AGAIN. Shooting Times trotted out the old fiction about .308 Win being a 62,000 psi cartridge and 7.62 NATO is only 50,000, so has much less pressure. WRONG,WRONG thrice again WRONG. The 62,000 psi figure for 308 Winchester is the latest SAAMI pressure measured using a piezo pressure …
Reviewer: Misha Mirka from North Las Vegas, NV United States M14x1 TPI 7.62 AK47 Crush Washer Saiga
The US military single shot maximum is 107 percent of the average pressure limit. The US military started making 7.62x39 ammunition to supply friendly foreign forces but later made it for training purposes. SAAMI copper crusher method average pressure limit - 50,000 CUP. SAAMI transducer method average pressure …
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The most commonly-cited explanation asserts that .308 Winchester operates at higher pressure than 7.62x51mm. SAAMI specifies a maximum average pressure for .308 Winchester of 62,000 PSI, but the oft-cited pressure of 7.62.51mm is 50,000 PSI--almost 25% less. If this is true, then it would logically follow that shooting an …
The old pressure testing method used for the 7.62 NATO cartridge started out life in the 1950s and is still published today in the US Army Technical Manuals. The figures are based on the copper crusher method in CUP, but are published as PSI.
The old pressure testing method used for the 7.62 NATO cartridge started out life in the 1950s and is still published today in the US Army Technical Manuals. The figures are based on the copper crusher method in CUP, but are published as PSI.
So, to sum everything up, the pressure difference between the 308 Winchester and the 7.62x51mm. NATO is less than 2,000 PSI which is statistically …
The sudden collapsing of an object toward its center is called an implosion. Nature wants things to be in a state of equilibrium or balance. To make the internal pressure of the can balance with the external pressure on the can, the …
I remember this debate somewhat. I think the warning was meant for those using older mil-surp rechambered rifles from the turn of the century. I'm vague on the whole debate.
