looking to bring back the old 250 3000 with a Modern "Twist"

[8mm RUM]

Here is the plan.
I'm looking for a used Axis I, thinking a standard or long action I think. I want room to use 115 gr copper bullets. I can get a 250 savage AI 20" 1X10 barrel from Shaw for around $380.
The dies will have to be from Redding, there a bit expensive at like $250.
I'm thinking about making it a dedicated night hunting gun.
Pros. cons?

[J.Baker]

The 1-10" twist probably won't be fast enough to stabilize those 115gr solid copper bullets if they're the longer VLD-style. Copper is lighter than lead, so even though a 1-10" twist will easily stabilize most conventional copper cup/lead core bullets, a solid copper bullet of the same weight will be noticeably longer and require a faster twist. You can cheat a little on twist rate if you push them fast enough, but the .250-3000 Savage, even in an Ackley Improved like I have, won't provide enough speed to help in that regard. A 25-06 or .25-06 AI maybe, but not a .250-3000 Savage or AI.

If I were wanting to build a .25 caliber to shoot the newer long/sleek bullets I'd probably go the .25-284 Norma route. The .25 Creedmoor has had some popularity in recent years, but I wouldn't recommend it on a Savage platform due to all the well documented feeding/extracting issues Savage's have with the Creedmoor cartridges.

[8mm RUM]

I see on the Barnes load info there 115 bullets need a 1X10 twist with the 257 Roberts?

[Dave Hoback]

If you are referring to the Barnes 115 TSX Copper Bullets, they are 1.228” long & a 1:9 or faster twist is recommended. Just as Jim pointed out.

[8mm RUM]

https://i.ibb.co/Sxbjfy2/ttsx-y.jpg
This is off there load page.
Its in a 257 Roberts load.

[Dave Hoback]

This is right from the horse’s mouth. The reloading page is likely an oversight, as the list 1:10 for ALL the different weights in 257 Ackley.

Bottom of the Specs Chart.
https://www.barnesbullets.com/product/tsx/?attribute_pa_bullet-diameter=0-257&attribute_pa_bullet-weight-gr=115&attribute_pa_bullet-type=tsx-fb&attribute_pa_rounds-per-box=50

[8mm RUM]

It could be a misprint, Hammer says a 104 gr is 1x10 Bullet Length is 1.140″

A 110 is Required minimum twist rate is 1-8.25″ or faster, Bullet length is 1.277″

For what ever reason Show doesn't offer anything but 1X10 in 25 caliber.

[Dave Hoback]

Here is Barnes’ bullet stabilizer. https://bergerbullets.com/twist-rate-calculator/

Even at 2700fps, this bullet has a 1.16SG which is Marginal Stability. Even the 1:9 puts it at 1.44SG which is still marginal, but only .06 from the 1.5SG safe zone. The calculator actually calls for a 1:8.75 to be comfortably stable.

[8mm RUM]

YUP I wish Shaw would put a faster twist in there 25 caliber barrels, 1X10 is the only option.
We just built my Granddaughter a Ruger American "3006 action" in 7MM57 AI and got it with a 7 twist. It will run long bullets great. We are only shooting 140 TTSX right now but at some point we CAN go longer if wanted.

[Dave Hoback]

Gotchya. Well, in that case, I’d recommend sticking with either lighter copper or heavier, conventional bullets, for best results.