04-12-2012, 08:24 PM
On the old forum, somebody else suggested having the front feed pawl push against the case neck. I don't know whether or not that's a viable option, but I've never heard of any machine gun that does it.
Back in 2006, a gunsmith friend took some measurements on an M249. The front and rear feed pawls are 0.241" in width, with spacing as shown on the attached picture.
The feed tray would require a new cartridge stop, reconfigured as shown. The left side of the stop would need to be shifted ~0.03" to the right to allow for correct alignment of the fatter cartridge with the feed slot. And note that even changing the lower left from a 45-degree bevel to a 90-degree corner, contact with the case shoulder looks rather iffy.
Back in 2006, a gunsmith friend took some measurements on an M249. The front and rear feed pawls are 0.241" in width, with spacing as shown on the attached picture.
The feed tray would require a new cartridge stop, reconfigured as shown. The left side of the stop would need to be shifted ~0.03" to the right to allow for correct alignment of the fatter cartridge with the feed slot. And note that even changing the lower left from a 45-degree bevel to a 90-degree corner, contact with the case shoulder looks rather iffy.