20-223 tactical 55 bergers speeds

[anrew]

New gun project almost done. going to try out a 20-223 tactical shooting only the 55 berger bullets. What kind of speeds are you guys getting with this setup. Im using a 1-8 twist barrel. What powder and a mild load of your bullet speed. Thanks for a little input on this project.

 

[Phil]

Talk to MrMajestic....

I believe he runs the same chambering, but in the AI version, with the 55`s......


Phil.

 

[MahtewsSB]

Isn't 20-223 a 20 Practical? Not trying to be picky, just trying to clarify for myself as I'm looking to build a 20 Prac soon.

 

[Phil]

Isn't 20-223 a 20 Practical? Not trying to be picky, just trying to clarify for myself as I'm looking to build a 20 Prac soon.

That`s what I`d call it......

I believe them to be the same....

Phil.

 

[TAJ45]

I thought the 20 Tac had a 40° shldr. Can't just kneck and go like the 20 Prac. Pretty sure on this....

 

[Phil]

TAJ45,

The .20 Tac has a 30* shoulder.....

Way too many cases in this neighborhood...........


Phil.

 

[Fotheringill]

Are you sure the 55 gr. bullets are suitable in a 1:8 twist?

 

[hogpatrol]

Are you sure the 55 gr. bullets are suitable in a 1:8 twist?

That's what I was wondering. Berger says optimal is 1-7.

 

[Fotheringill]

I have shot Berger 55's, Sierra and Hornady out of a Savage F/TR .223 with a 30" barrel and 1:7 twist. I can only speak for my rifle. Those rounds that actually DID hit the target BOARD were wild, there were several sideways hits and some apparently disintegrated in flight. I know it is not the rifle since it will shoot 200 yards with a 73 gr. Berger Target round in .53" with a five shot group. I personally do not feel comfortable with any bullet under 69 gr. with this rifle.

 

[hogpatrol]

I have shot Berger 55's, Sierra and Hornady out of a Savage F/TR .223 with a 30" barrel and 1:7 twist. I can only speak for my rifle. Those rounds that actually DID hit the target BOARD were wild, there were several sideways hits and some apparently disintegrated in flight. I know it is not the rifle since it will shoot 200 yards with a 73 gr. Berger Target round in .53" with a five shot group. I personally do not feel comfortable with any bullet under 69 gr. with this rifle.

I was referring to Berger 55s in .20 caliber, what the OP was inquiring about.

 

[rickiesrevenge]

I've shot berger's 55gr .20 in my 8T barrels with no problems. Some people use 9T's in faster cartridges.

Aaron

 

[TAJ45]

TAJ45,

The .20 Tac has a 30* shoulder.....

Way too many cases in this neighborhood...........


Phil.

Bingo Phil, thanks for the mem jog. Tom

 

[TAJ45]

I've shot berger's 55gr .20 in my 8T barrels with no problems. Some people use 9T's in faster cartridges.

Aaron

I bought a 20 BR, either PN or Lilja with a 9tw used. The gent before me just could not get it under a half inch at best with the 55s. Mebbe just one of those bbls? Hmmm, I don't remember what he did with other wgts. It seems shooting skill wasn't rearing its ugly head.

 

[rickiesrevenge]

It may be that some of the guy's running 9T barrels actually have barrels that are a little fast. Button barrels can be faster or slower than what the factory said. I've got a 9T xcaliber barrel to try.

Aaron

 

[Phil]

Bingo Phil, thanks for the mem jog. Tom

Lord knows we all need those............

 

[PAshooter20BR]

20x47 stabilizes 55gr Berger in a 9 twist bartlien, repeatedly holds less than an inch at 300 yards.

 

[tooter]

Shooting a 1-9, three groove X-Caliber 26 in. barrel chambered for a 20-Blitz (40 degree, 20 PPC) with 55 Bergers. It consistently shoots three shot bug holes at 100 yds. when I do my part ---- MV running 3600-3670 fps depending on powder selection, and well under pressure limits.

 

[Savageseven]

20x47 stabilizes 55gr Berger in a 9 twist bartlien, repeatedly holds less than an inch at 300 yards.

what powder did you use in a 20x47 ?

 

[lgwatson]

Isn't 20-223 a 20 Practical? Not trying to be picky, just trying to clarify for myself as I'm looking to build a 20 Prac soon.

They are different. The 20 Practical is easier to form, just neck down. Case capacity is very close.

New gun project almost done. going to try out a 20-223 tactical shooting only the 55 berger bullets. What kind of speeds are you guys getting with this setup. Im using a 1-8 twist barrel. What powder and a mild load of your bullet speed. Thanks for a little input on this project.

You may want to look at a 20 Practical. Easier to form. Just neck size down performance is pretty much the same. I shoot the 55 Berger in my 20 Practical with a Lothar-Walther 9 twist, 22.7 gr N-540. I used Quickload 20 Tactical data. Load is below max listed. 3049 FPS.

 

[lgwatson]

They are different. The 20 Practical is easier to form, just neck down. Case capacity is very close.

You may want to look at a 20 Practical. Easier to form. Just neck size down performance is pretty much the same. I shoot the 55 Berger in my 20 Practical with a Lothar-Walther 9 twist, 22.7 gr N-540. I used Quickload 20 Tactical data. Load is below max listed. 3049 FPS.

3 rounds at 100 yards.