Quote History Originally Posted By mercersfinest4:
@LRRPF52
Where would you recommend acquiring a 7-08 barrel that will have a properly located and sized gas port?
I have been considering a M5E1 receiver set build in 7-08 but have been concerned about gas issues.
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Quote History Originally Posted By mercersfinest4:
Originally Posted By LRRPF52:
Is it a GII or older R25?
PMAGs should run with it, but you'll need to confirm with testing.
1st Gen Magpul 7.62 PMAGs have run perfectly for me in my .260 Rem built by GAP on DPMS AP4 receivers.
@LRRPF52
Where would you recommend acquiring a 7-08 barrel that will have a properly located and sized gas port?
I have been considering a M5E1 receiver set build in 7-08 but have been concerned about gas issues.
The 7mm-08 is probably the most friendly variant off the .308 in the AR10 sized guns, with factory hunting ammo in the 139/140gr class.
You do have slightly-less bore volume, but with slightly lower chamber pressure.
If you start shooting heavier 154-168gr, you will start to see higher port pressures like we do with .308/175gr/178gr/185gr.
Most hunting ammo for the 7mm-08 is 139/140gr though.
RLGS will work fine for that, probably with a port similar to a .308 at .0935", but I would check with reputable barrel makers.
If it were me, I would be looking at a DPMS GII 7mm-08.
If you're doing a conversion on a large frame, I would look at:
Wilson Combat
McGowan Barrels
McGowan allows you to fully configure the barrel how you want, including CMV vs stainless, twist rate, profile/contour, gas system length, chambering, gauge, crown, fluting, and finish.