New Project! 6.5 Grendel Blackout

Game Larder - Your reliable choice for Game Larder solutions - www.gamelarder.com
Edinburgh Rifles

Edinburgh Rifles

Well-Known Member
Trade Member
Don’t need or really have time for a new project

But…
I have a Grendel. Love it
Short pointy bastard with a 1:7” twist 19” barrel built on a Sako 75 Action 1
Chucks 95gr VMax at 2750
Mildots line up perfectly at 100/250/350m
Shoots like a teeny tiny pop gun.

I found a box of Norma 156gr Oryx down the back of a shelf
or they could be Vulkans.
So logically I thought “I wonder if those would go well subsonic….”

Cue lots of fecking around on Quickload to find a nice fluffy fast powder that will burn in a short pipe

Find out tomorrow how they shoot!!
 

Attachments

  • IMG_9116.webp
    IMG_9116.webp
    96.3 KB · Views: 70
I shoot a lot of subsonic loads in 300BLK and 308Win, go to powder is Viht N310

3.8gr in the 300BLK with bullets from 120 to 200gr, heavier bullets give me single ragged hole groups at 25m
I've had to switch to the ShellHouse 175gr coated as he won't supply my usual 200gr without gas checks and lube now which has doubled the price :(

For the 308 I use their 165gr RNFP, £90/1000 with 6gr of N310 and again gives very nice groups

ARES in the Slovenská Republika make some really nice coated lead bullets, I've got some being shipped to my son in Amsterdam for me to try
they won't ship outside the EU unfortunately.
 
I use N120 in the 300BLK (Ruger American in a Trybe chassis) for supersonic loads, best load so far seems to be a 190gr Nosler CC with 16.4gr, gets a 1.25" group at 100m
 
They are a great bullet and not as hard as some make out. Shot roebuck and a wildboar with it a couple of weekend ago in Sweden.
 
I've used N120 and even slower rifle powders in 7.62x39 AK to get it to cycle subsonic (semiauto). Not a powder I'd choose for bolt action, I suspect the velocity variation to be quite high.
 
Not in my 300BLK, my best 10 round ladder test node gave an ES of 39fps and an SD of 13.2fps.
 
I started messing about with subsonic Grendel loads 3/4 years ago using 160gr round nose, I'll see if I can find the data and test targets. Was quite interesting.
 
I've not tried the lower N120 load for the subsonics, I find the N310 loads work very nicely, and of course it's almost 1/3 of the price at 3.8gr :)
 
Initial test conducted
Need less powder! Or a faster powder
Verging on subsonic
Shot about an inch.
Didn’t have chrono with me more testing required!

Interesting the holes in the paper showed some spiralling as if not stable
Surprised as its a 1:7”
Will do more testing and report back!
 
You must log in or register to reply here.
https://Immersive-optics.com/
Back
Top