New member with a .22-250 question

[Patocazador]

I'm a new member that has been reloading for over 30 years.

I have a German (Sauer & Sohn) Weatherby Varmintmaster in .22-250 that I want to load 60 grain Nosler Partitions for IF the twist is 1 in 12 or faster. These bullets are too expensive to play around with trial and error so I want to ask if anyone knows the twist rate for this gun's 24 1/2" barrel.
It would save me money to find out in advance. Thanks.

 

[BADUNAME37]

Run a tight patch up the barrel and carefully turn the rod the way it wants to go and see how many inches the rod must travel to make one full revolution by carefully marking the rod top, go until the mark is on the top again. The amount of inches the rod travels to make one revolution is the twist rate of your barrel (like 1:14 or one revolution in 14 inches).

That will give you one revolution per however many inches.

 

[Patocazador]

Thanks Friendly Fire. That's simple enough. For some reason I thought I'd have to slug the barrel.

 

[Texaszach]

Put a piece of tape on the rod pointing up and measure how far it travels to reach 360 degrees

 

[Patocazador]

I followed your advice and found that it is 1 in 12".

Thanks.

 

[jehu]

If 1:12 I would shoot 55gr and under for best results. The 60gr might do fine but the lighter bullets should be more accurate out of that twist.

 

[NeuseRvrRat]

give them a shot and report back

 

[guntech59]

1-12 should be fine at 22-250 velocities. My 1-14 Savage will stabilize them.

 

[TexasPatriot.308]

I got a Ruger No. 1 Varninter in .22-250, aint shot it much but wondering with a 1:14 twist, how a 60 grain plus partition do or should I stay with a 55 grain. I've killed a few hogs with it and 55 grain corelokts thru their ears, wanting to try a larger bullet for deer.

 

[TexasPatriot.308]

I got a Ruger No. 1 Varninter in .22-250, aint shot it much but wondering with a 1:14 twist, how a 60 grain plus partition do or should I stay with a 55 grain. I've killed a few hogs with it and 55 grain corelokts thru their ears, wanting to try a larger bullet for deer.

 

[TexasPatriot.308]

sorry bout that double post.....this darn laptop of mine...

 

[Patocazador]

If 1:12 I would shoot 55gr and under for best results. The 60gr might do fine but the lighter bullets should be more accurate out of that twist.

I shot both bullets with my Rem. 700 in .22-250 with a 1 in 14' twist. The Nosler 60 grains were marginally accurate (1.5 MOA). I want much better results out of this caliber/bullet combination before I'd switch from my 55 gr. load. I have not had a chance to shoot the 60 grain bullets from the Weatherby yet. I expect better results but could be disappointed.

The chambers in the two guns are vastly different. The 700 has a very tight chamber with almost no freebore (throat) whereas the Weatherby is just the opposite.

 

[jehu]

I have a Sako SS Varmint 22-250 and shoot some crop damage deer and I can assure you a 55gr Hornady V-Max in the vitals or neck will devastate any deer out to 400yrds.