03-19-2014, 05:38 PM
The dimensions noted in lilharcher's post indicate that the .264 USA looks like the 6.5x43* GPC prototype, second from left, below.
![[Image: 11037565314_a3fca24b43_z.jpg]](http://farm3.staticflickr.com/2808/11037565314_a3fca24b43_z.jpg)
*Although case length was listed as 43mm in the photo caption, comparison to the other rounds in the pic shows the case length is the same as that of the 5.56x45 round at far right.
*Although case length was listed as 43mm in the photo caption, comparison to the other rounds in the pic shows the case length is the same as that of the 5.56x45 round at far right.