7.62 x 51 is not compatible with .308 ammo? - Page 2

eflyguy · January 19, 2021, 08:47 PM

Quote:

Originally Posted by Chipperman

Standard 7..62x51 M80 generates about 50,000 to 52,000 SAAMI CUP depending on which source you look at. (see Unclenick's post above)

My Lyman manual lists multiple .308 loadings >60,000

I think you're the one that needs to read his post (and the linked article).

CUP and psi are not the same unit of measure.

Chipperman · January 19, 2021, 09:01 PM

I stand corrected on that. I know PSI and CUP are not the same thing, but I did not realize that the Lyman manual uses both seemingly randomly within the same chart.

**44 AMP** · January 19, 2021, 10:16 PM

The cases are dimensionally the same (on the outside, anyway).

I would remind everyone that even though one may be loaded hotter than the other USUALLY is, they are all well under the proof load level and nowhere near DANGEROUS pressure levels, unless your gun is defective.

January 19, 2021, 10:16 PM	#28
44 AMP Staff Join Date: March 11, 2006 Location: Upper US Posts: 22,959	The cases are dimensionally the same (on the outside, anyway). I would remind everyone that even though one may be loaded hotter than the other USUALLY is, they are all well under the proof load level and nowhere near DANGEROUS pressure levels, unless your gun is defective. __________________ All else being equal (and it almost never is) bigger bullets tend to work better.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

January 19, 2021, 09:01 PM	#27
Chipperman Senior Member Join Date: January 31, 2000 Location: Live Free or Die, Baby! Posts: 1,543	I stand corrected on that. I know PSI and CUP are not the same thing, but I did not realize that the Lyman manual uses both seemingly randomly within the same chart.