664 fps?!?Store ammo and very accurate color me impressed.
I have sub sonic .308 loads that suppressed are quieter but slower at 664fps.
And not intended for the distance shots he was taking.
That rifle is super quiet for what it does.
Thanks for posting @COPO
I reload my ammo and watching him eject the brass and let it roll away was eating me up
That is slower than my .45 and you can watch those bullets fly if the sunlight is just right.