20BRAI

[L.Sherm]

Will a 9 twist barrel stabilize the 55 gr. Berger? Thank you.

Yes!

 

[Gabe22BR]

Will a 9 twist barrel stabilize the 55 gr. Berger? Thank you.

Yes, that’s what mine is

 

[Gabe22BR]

My 20BR with Berger 55grw/30.5gr Varget would produce 3719 fps out of 27" PacNor

A kreiger will have a tighter bore of .199… my pac nor has a bigger bore of .200.2… so go figure..

 

[L.Sherm]

Yes, that’s what mine is

Mine too

 

[Tommie]

A kreiger will have a tighter bore of .199… my pac nor has a bigger bore of 198.2… so go figure..

I’m confused

 

[Gabe22BR]

I’m confused

Oops.. that’s the kreiger JGS pilot I had to get.198.2 for a 199 bore..
Had to order a bigger pilot than a .199” for the pacnor…
My pacnor will shoot, I just couldn’t get it to shoot like this Kreiger..

 

[Tommie]

@Gabe22BR can you post a photo of a loaded round?

 

[Gabe22BR]

Here ya go-
20BRAI -6BRAI-6BR

 

[Tommie]

Here ya go-
20BRAI -6BRAI-6BR

Thanks man. Very nasty looking cartridge.

 

[Bodhisafa]

Here ya go-
20BRAI -6BRAI-6BR

Can you go over the step by step process you use to get the neck to 20 cal

 

[bighornbob]

Will a 9 twist barrel stabilize the 55 gr. Berger? Thank you.

My 9 twist did not like 55 gr but 50 gr were one hole hundred yards

Bob

 

[L.Sherm]

My 9 twist did not like 55 gr but 50 gr were one hole hundred yards

Bob

Your the first one with a 9 ive heard of that the 55's didn't work in a 9. I know a guy who shot them in a 10 at higher elevation just to see if they would stabilize and they did and shot well.

 

[L.Sherm]

Can you go over the step by step process you use to get the neck to 20 cal

I have 3 double ended forming dies i bought from bullberry years ago that I can neck just about any thing thats 30 cal all the way down to 17 cal.
After I get to 20 cal I anneal then run through my FL die

 

[Gabe22BR]

Can you go over the step by step process you use to get the neck to 20 cal

265-257-246-236-231
Load & shoot-2 times-&- trim

if you decide to turn necks- your finial bushings will end up.230/229/228… depending upon how much you cut off…..

I use Lapua, Peterson, Alpha brass..

 

[Gabe22BR]

I use my Harrell’s 2.5 6BRAI DIE, with the bushings to form & size, and I have a Wilson 20 dasher, cut down for seating… cause I want to see my seating pressure

 

[Gabe22BR]

This case doesn’t show pressure signs- hard bolt lift, ejector swipe, sticky bolt… it’ll pierce a primer, or primer will be missing upon extraction, laying in the action or on the table.

i shoot a Bat SB action, Jewel trigger, NF comp scope

if I stay around 3650 FPS, accuracy is there, whether it’s RL15,203B, Varget, 8208, H4895, imr 4320….
I’ve tried the Dasher speeds- & ruined cases..

the search function here yielded me several 20BR loads, I just added 1.5gr to it to start…their speeds was 100fps slower, which is spot on.. not gonna guarantee it’ll hold a primer w/ a 20 dasher load…I’ve ran mine up to 4200 FPS…. That brass is gravel now!!!
Be safe have fun !!
Gabe

this ( might) ride to the 600yd Nationals…

 

[Bodhisafa]

I use my Harrell’s 2.5 6BRAI DIE, with the bushings to form & size, and I have a Wilson 20 dasher, cut down for seating… cause I want to see my seating pressure

Where did you get the 20 dasher wilson die?

 

[Gabe22BR]

Where did you get the 20 dasher wilson die?

Here on classifieds…
And Graf’s has a 20 br, that you can run a reamer in…. & use it to seat with…
Whiddengunworks makes dies as well…

 

[L.Sherm]

I know Whiddens have whats called a 20 Nitro like mine, essentially its a 6BR necked to 20 cal AI'd and straightened out a little.
I dont know anybody who has the reamer but JGS has it also just gotta get approval.

 

[Gabe22BR]

Mines a true 20BRAI-
JGS has a reamer- no approval needed-
Whiddengunworks has the reamer spec-/
20BRAI-Gabe Matheny-
If going Whiddengunworks route…