05-25-2011, 01:36 AM
Gents,
Reading about the 7x46mm some more, it looks like the choice of 7mm might have something to do with the pressure limitation objectives of keeping it under 50k psi with a 130gr going 2650 fps out of a 16.5" barrel, which is a sensible objective for a repeating rifle or machinegun.
A 6.5mm would add a lot more pressure than a 7mm due to the increased bottle neck, but it remains to be seen what characteristics this 46mm length case with a narrower base would have. It's worth looking into I think.
LRRPF52
Reading about the 7x46mm some more, it looks like the choice of 7mm might have something to do with the pressure limitation objectives of keeping it under 50k psi with a 130gr going 2650 fps out of a 16.5" barrel, which is a sensible objective for a repeating rifle or machinegun.
A 6.5mm would add a lot more pressure than a 7mm due to the increased bottle neck, but it remains to be seen what characteristics this 46mm length case with a narrower base would have. It's worth looking into I think.
LRRPF52