6mm grendel

[LRRPF52]

Here is a 6mm with more power. AR10 upper in 243 Winchester

https://www.bearcreekarsenal.com/ua243rh...d575df917b

ArmaLite and DPMS have had .243 Winchester uppers for well over a decade now.

The problem is you now have a beast of a rifle with a receiver set that feels like two bricks fit together, unless you go small frame.

You can push a 105gr to 3000fps though from a 24" barrel.

In the 6mm AR, you can get 2750 with a 105gr from a 26" barrel.

In the 6mm AR Turbo, you can get 2850-2925fps with 108gr Bergers from a longer barrel.

The lighter AR15 is more manageable, parts market supports it better, compatibility is there, brass life is excellent.

A 6mm Dasher will get you from 2950-3000fps with 105s and 107s, but uses a .473" head diameter from the 6mm Bench Rest cartridge.

Grendel brass
6mm AR
6mm AR Turbo

6 BR Brass
6mm BR
6mm Dasher