Grendel as a Universal Infantry Cartridge

[Tony Williams]

Maybe a year later Prvi started selling Carcano brass again. The 7mm bullets that have good BCs are heavy, too heavy for a case with a cap of apx 42gr IMO. Using green bullets designed for optimum BC the 6.5 and 6.8 calibers work better for a 42gr cap case again my opinion. The 6.5x45 Carcano case has the same capacity and performance as the 6.5 BRX. The Carcano case will feed from a AR10 pmag...big plus. 22 Carcano cases will fit in a pmag. Magpul is making 25 round mags that may hold 27 carcano cases.

AS for performance, 123gr Amax 2750fps from a 20" barrel at apx 55000 psi using an optimum powder. 2800 is easy enough to reach but not at the lower pressures.
The powders are the same range that you guys are using in the Grendel...why I have been here researching.
I have a piston rifle design from 2010 that I haven't produced, it has a 2.5-2.6" OAL. Now that there are companies that will machine molds much cheaper and produce smaller runs of parts it may be feasible to build a design that uses non standard mags.
I have talked to a company rebuilding MK48s. They say it would take a new prawl and simple barrel swap to make the MK48 work with a Carcano based cartridge.

Sounds great! Go for it….