20 cal barrel

[varmintshooter]

I think the deal is, are the barrels REALLY 12 twist?????????

Just because they tell you it`s a 12 twist, doesn't guarantee it.....

Personally I don`t shoot anything but 32`s in a 12 twist, but I bought 11 twist barrels for all my 39 gr. stuff.....

Doesn't mean it won`t work, just that I don`t happen to do it that way......

You need to try it for yourself, don`t let others tell you that it won`t... it isn`t their rifle, it might work.......It might not.

Good luck with your project.

Phil.

I agree with Phil on this. Just because a barrel is marked as a 12 twist doesn't mean that it really is. Clearly, if you order a new barrel you may be smart to get a 10 or 11 twist to be on the safe side.

 

[A_Gamehog]

Phil is right.

A true 12 twist will shoot 26 barnes-to-39 sierra's
However some 40-50% will not shoot the various 40's don't chance it and waste your $

32 V-Max or Zombie or Nosler dogtowns.
R-10X is the go to powder, X-Terminator, LT-32 are second and third to try , if it won't
shoot a 32 with R-10 it won't shoot period.

R-10X
32 Zombie or V-Max
Hornady brass
Federal 205's
1/2 MOA or better out to 300 if no winds.

Lots of R-10X vary, I don't consider this load a Coyote killer. Splash

Target is from 2012 off my tailgate with a bi-pod.

 

[bobcat93]

that load must be for the 20-338 lapua?

That's a good one.. bahahahahaha..you gotta stay sharp listing load data on this forum .. CHIEF!

 

[chuckshooter]

Did he ever say what brand of a barrel he ordered

 

[223Randy]

He didn't
Green Mountain 25" x 1.060 blank.

 

[chuckshooter]

He didn't
Green Mountain 25" x 1.060 blank.

I put that same barrel on a martini cadet 20 Ackley bee. shoots 32 zmax 1/2 groups all day. I just recently checked the barrel with a borescope and the lands are gone in the first 3/8 of an inch . But it still shoots. I've ordered 5. X Caliber barrels 11 twist. Just finished putting 1 on a martini in some sort of rimmed 20 vart targ. After having both barrels I wouldn't hesitate to buy more x-calibur but I wouldn't buy another green Mountain. Sorry

 

[223Randy]

That is your choice. I will let you know how this one shots after i get it finished and get some ammo loaded up.
Do you do your own barrel work or hire it out?

 

[chuckshooter]

I did my own. I shouldn't be so hard on GM. It was in stock, inexpensive, the right barrel diameter so I didn't have to turn it and it does shoot well. I might be to blame for the land wear from when I cream of wheat fire formed. on your 20p I shoot 24.5 of AA2015 behind a 40gr vmax out of a pacnor barrel. love that gun and i'm going to build another next

 

[Tiratore]

Measuring your twist is sound advice. Some barrel manufacturing processes produce twists different from what was intended, it appears.

I have experience with two Twenty VarTarg barrels that have 12" twists, as close as I can measure (next one from the same supplier came out 11.5" - glad it wasn't 12.5"). The 12" twists will shoot the 39 Sierra well - my go-to woodchuck/prairie dog bullet. For target, one seems to shoot better with the 35 Berger; the other with the 40 Berger. Neither seems to perform well with the 40 Hornady. Your results may vary.

 

[fourpower]

I pulled the trigger (so to speak)on a 20 cal barrel in 1-12 twist. Wonder what bullets to try first and how many i will need to see if they are accurate? Suggestions for bullets? i nave some mixed brass that i can sort if there is a best brass. ( excluding Lapua) i don't have any and with as much other brands that i have i will make something else work. Suggested loads to start?

I have had a 20 tact for 7 years 1in 12 twist. all I shoot is 32gr vmax and nothing is safe out to 400yds! I use h-335 and barrel is getting worn so now I use 27gr 335 and a mag primer for 4085fps. just got back from rabbit shoot and only miss I shot and that was at 485yds. any rabbit 300yds or less were goners. all my friends love what this gun does to them.

 

[Phil]

The .20 Tac. definitely has a place in the small cal. world......I had a Dakota that i let go......

It will be replaced with a .20-223AI

I have the bushing die, and Lapua brass is everywhere, so why not.........

Glad you`re enjoying your .20Tac.

 

[ASbobcat]

My 12 twist 20Vartarg handles 32 and 39gr Sierra's beautifully. 40gr V-Max not so much.

 

[Tiratore]

 

[SShooterZ]

I have a Rock Creek 12 twist VarTarg that lasers the 32gr Z/VMax. I had a factory Savage that didn't like the 40gr VMax at all but was PD death with 32gr SBKs. Replaced the factory barrel with a custom Pac-Nor 1:11 in .204R and it shoots the 40s now with no issue. It surely is a fine line with the 40s and the 1:12 IMO.

 

[Ed333]

I have a Savage 12 LRPV in .204 Ruger, and was about to start some load development work, when I found this thread. So far with factory ammo, I give an edge to the Hornady 40 gr Vmax, over the 32 gr. Specs say 1:12 twist, does anyone know if Savages tend to run true to spec, re twist?

 

[Phil]

Either check it with the cleaning rod method or just load and shoot.

The load and shoot is the only true method, as far as I`m concerned......