1-12 twist 22-250

[gohring3006]

What's the heaviest bullet you guys think i could run in a Savage 1-12? What bullets and powders are you liking in this setup?
Thanks..

 

[justinp61]

Sorry I can't help with the heaviest bullet. My Savage FVSS shoots Sierra 55gr Gamekings (1365) and 36.0gr of Varget really well.

 

[benchracer]

I have successfully used the 69 SMK from my 12 twist 22-250 using Superformance. I am also developing a load with RL-17, though I expect it to be a bit slower than the Superformance load. The SMK is right on the edge of stability, though, so I wouldn't expect it to work in all conditions.

The 53 VMAX and 55 SBK will give you the best combination of velocity and bc in all conditions. I have had excellent results with IMR 8208 XBR and the 53 VMAX during initial development. I will also be working with CFE 223, Varget, and RL-17.

 

[gohring3006]

I have successfully used the 69 SMK from my 12 twist 22-250 using Superformance. I am also developing a load with RL-17, though I expect it to be a bit slower than the Superformance load. The SMK is right on the edge of stability, though, so I wouldn't expect it to work in all conditions.

The 53 VMAX and 55 SBK will give you the best combination of velocity and bc in all conditions. I have had excellent results with IMR 8208 XBR and the 53 VMAX during initial development. I will also be working with CFE 223, Varget, and RL-17.

I would be interested in your results. I noticed the velocity is up there with the CFE 223 in my manual. I have some RL 17 also 4064. I think the 55-60 gr. Bullet Is where im going to be safe..

 

[gohring3006]

BTW, this is a Savage Axis 1-12 heavy barrel. I took it out of the box and took a coil and a half off the trigger spring it went from 6-7 pounds to about 3.5. I took it to the range to zero the scope and break barrel in with factory ammo. This thing shot a little under a inch. I know with a good load work up it will be good to go.lol

 

[benchracer]

I took it to the range to zero the scope and break barrel in with factory ammo. This thing shot a little under a inch. I know with a good load work up it will be good to go.lol

That is pretty typical with factory ammo in 22-250 IME. The typical leade in a 22-250 chamber tends to give quite a bit of freebore. In both 22-250 barrels I have had, the most accurate seating depth settled in around 2.430, which shrank groups dramatically. In both barrels, distance to the rifling with 50-55 grain bullets was around 2.5 OAL base-to-tip.

 

[benchracer]

I would be interested in your results. I noticed the velocity is up there with the CFE 223 in my manual. I have some RL 17 also 4064. I think the 55-60 gr. Bullet Is where im going to be safe..

I am anticipating the high accuracy node will come in around 3900 with CFE 223 and 3950 with RL-17 from a 26" barrel, with IMR 8208 XBR and Varget coming in around 3800 or so.

 

[gohring3006]

That is pretty typical with factory ammo in 22-250 IME. The typical leade in a 22-250 chamber tends to give quite a bit of freebore. In both 22-250 barrels I have had, the most accurate seating depth settled in around 2.430, which shrank groups dramatically. In both barrels, distance to the rifling with 50-55 grain bullets was around 2.5 OAL base-to-tip.

thanks benchracer, this is very good info..
The good about the Axis is its a long action with a .308 length mag. So there should be plenty of room.

 

[Trickymissfit]

Sorry I can't help with the heaviest bullet. My Savage FVSS shoots Sierra 55gr Gamekings (1365) and 36.0gr of Varget really well.

try 35.5 grains of IMR3031 with the Sierra bullet seated .002" off the lands.
gary

 

[Trickymissfit]

BTW, this is a Savage Axis 1-12 heavy barrel. I took it out of the box and took a coil and a half off the trigger spring it went from 6-7 pounds to about 3.5. I took it to the range to zero the scope and break barrel in with factory ammo. This thing shot a little under a inch. I know with a good load work up it will be good to go.lol

a twelve twist barrel is limited to bullets under a .275B/C. A .255 or .26 B/C seem to really work well.
gary