AR-10 platform - what other calibers can be built????

[BigNate]

On 7/18/2025 at 5:34 AM, Tim S said:

Yeah pretty interesting cartridge with an interesting back story.  I thought it would be a fun “what if” project as in what if the 280 Brit had ended up as the NATO standard instead of 308.  Took me almost two years to build but it turned out to be really nice to shoot and a one of a kind piece.

Cool stuff... Have you measured case volume? 

[Magwa]

I would build a 284 Winchester in a heartbeat but I got sidetracked by loooooooooooongrange...... they used to offer it in both savage 99 and winchester 100and that was semi auto.