More crap I don't need - 8.6 Blackout edition.

[LVLAaron]

We'll see how this one does.

 

[Stugots]

Aaron, how did your 8.6 Blkout McGowan barrel shoot for you? Would you please post your load data?

 

[LVLAaron]

8.6BLK LOAD DATA

docs.google.com

 

[LVLAaron]

Haven't put a ton of rounds through the McGowan but so far, I'd say it's good to go.

 

[Sniperhandle]

Haven't put a ton of rounds through the McGowan but so far, I'd say it's good to go.

So is that 6.5 twist?

I didn't think guys your age wore wrist watches! Haha

 

[ELR LVR]

Got the last piece I need to build an 8.6 blackout.

.338 1:3 twist.


I figured since Festivus is right around the corner, we could argue about the unnecessary twist rate.


View attachment 1503708

I did one for a guy recently, this was for a bolt gun though.
I was shocked by the twist rate as well
Ordered a 1:3 only because Faxon was the only place that had one "In stock" ready to ship
The barrel cut real nice, it cut like a Krieger
He was planning on using copper solids
--------------
I did a little research since that cartridge is new to me as well as such a tight twist rate
and from what I gathered that is the twist needed for subsonic speeds
With Heavies
So I suppose the 1:3 covers every scenario and that's whats most commonly offered.
Many other people use like a 1:6 and choose their bullet accordingly for that

 

[LVLAaron]

Mine are all bolt guns. I got a faxon 1:3 that I plan on using for a 338 arc. Best of both worlds? I'll find out.

 

[Stugots]

I did a little research since that cartridge is new to me as well as such a tight twist rate
and from what I gathered that is the twist needed for subsonic speeds
With Heavies
So I suppose the 1:3 covers every scenario and that's whats most commonly offered.
Many other people use like a 1:6 and choose their bullet accordingly for that

Not true. I have a cut rifled McGowen 16" x 1.2" straight 6.5 twist barrel screwed into a Zermatt Origin action and load/shoot 300gr Sierra's with an average velocity of 1,050 fps. I have had Zero issues stabilizing this load. (.338 TBAC Ultra suppressor installed).

 

[ELR LVR]

I have a cut rifled McGowen 16" x 1.2" straight 6.5 twist barrel screwed into a Zermatt Origin action and load/shoot 300gr Sierra's with an average velocity of 1,050 fps. I have had Zero issues stabilizing this load. (.338 TBAC Ultra suppressor installed).

According to Berger

This is the kind of info I like but causes me to just "Not get" whats up with the 1:3 twist?

 

[SKWERLZ]

Got the last piece I need to build an 8.6 blackout.

.338 1:3 twist.


I figured since Festivus is right around the corner, we could argue about the unnecessary twist rate.


View attachment 1503708

I’ve shot 8.6 a bit in a Q fix
Cool cartridge
I have a dead 338 1/8 barrel I’m contemplating doing a 338 ARC with the front half.

 

[Larry Koch]

The 338ARC or 338BR has potential, for VFS. If someone can make it to the top.

 

[LVLAaron]

So is that 6.5 twist?

I didn't think guys your age wore wrist watches! Haha

Yep, 6.5. I've got a nice little watch collection. That's my greasy shop watch lol