...and now a personal friend of SAMMI!
In case you folks haven't heard (ok, this was announced a couple weeks ago, maybe I'm the last to know), the popular-but-ostracized 6.5mm Grendel cartridge has now been accepted by SAMMI and all trademark claims by Alexander Arms has been released :clapping: (Full linky here: Alexander Arms released 6.5mm Grendel Trademark - AR15.COM ).
I'm pretty durn excited about this! This is about as close to a "one caliber" rifle round as you'll get, unless you're hunting squirrels (or unless you disagree with the versatility of the Grendel round )
Here's an image comparing the 6.5 Grendel between a 7.62 and a 5.56, the two common military rounds now:
You can find a bunch of charts on velocities, wind drift, etc here: Weaponeer.net Forums: 6.5 Grendel AR Conversion information
This post is NOT meant to start a caliber comparison war. I'm sharing this because the adoption of this caliber has, in the past, been hindered by the trademark claims of Alexander Arms.
As for me, I have a nice lower with a Timney trigger that's just ACHING for a Grendel upper