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Twist rate for custom .250 Savage?
TWalker
Member Posts: 2,372 ✭✭✭✭✭
I have a.250 Savage caliber rifle built on a Carcano action. The barrel is from an early Winchester 1894 in .25-35 caliber. Do you think that the twist is 1:8 ? Will 120 Gr bullets be a good choice. The gun is a single shot. The magazine follower was converted into a feed ramp. Thanks for any suggestions.
Comments
My favorite was partial boxes of bullets at great prices off gunshow tables. Have any friends that load 25 cal you could bum a few from to try?
added IIRC Newton used an 87 grain bullet because it gave the 250-3000 Savage the 3000 number.
The 250 Savage on the other hand, was a way hotter cartridge. Shooting a much lighter bullet, at least 700 FPS faster.
There is no absolutes, as far as the weight of bullets for reloading is concerned. I believe that a 120 grain bullet, would be accurate in a .25/35 barrel. As far as barrel twist, is concerned. Without testing, it's just guess work though. So many other variables, could affect accuracy.
Twist rate is based on the length of a bullet not the weight. If you want to check stability of any bullet in particular, use the Berger or JMB Stability Calculators.
Since we have nothing more to go on here, according to the factory, your .25-35 barrel should have a 1:10" twist which is just about standard for 'normal' .25 caliber bullets. The slower twists were for the lighter and therefore shorter bullets used to make the velocity claims.
So with cup and core bullets you should be fine up to the 117 or 120 grain bullets if you use reloading manual velocities. I personally would do the measuring required and use a calculator to establish your results.
Best.
I think the whole thing is just neat, real "repurposing." Was the magazine housing cut off for a better appearance as a single shot?
Got pictures?