25 caliber what caliber can i find best accuracy with in a 10.5 twist barrel

[Cloudrepair]

I have much interest in something very accurate and non magnum.

 

[nakneker]

Lots of choices. Personally I would opt for a 25x47 Lapua or a 25 creedmoor in the non mag cartridges But you’ll get a lot of good ideas on this thread I’m guessing. Quarter bore fans abound and they all have their favorite. Not sure what you intend to use the rifle for, a little more info and people might add bullet recommendations too.

I have a 25x47L. It’s one of my favorite rifles. Easy to load for, simply neck down 6.5x47 brass, load and shoot. A 6.5x47 bushing die makes it easy. If you want brass with the correct headstamp you can buy 25 Creedmoor brass with the correct head stamp.

If you want a bit more powder capacity the 25-06 is a very capable round too.

 

[jepp2]

a little more info and people might add bullet recommendations too.

Exactly. Knowing what elevation you shoot at, and what your intended use of the rifle and thus bullet weights will help a lot. I have a 25-06 for my long range shots. I use the Berger 115 gr VLD-H in my 10T. Would be marginal on stability but since I shoot at 5000 feet elevation and 3000 fps, no issues.

 

[std7mag]

I'll admit, i never really gave elevation a thought when choosing a cartridge.
But then I'm at 1,600ft ASL.

All my rifles are geared towards hunting.

Savage Axis II in 250 Savage wearing an E.R. Shaw 24" sporter barrel.
This is primarily my coyote rifle, though i have taken 2 deer with it.
Normally shoot 75gr Sierra HP Varmint and 90gr Sierra BlitzKing.
Deer was 100gr Nosler Ballistic Tips. And i have shot the 115gr Berger VLD.

Ruger 77 MKII in 257 Roberts.
I shoot everything from the 75gr HP through the 120gr Sierra HPBT GameKings.

Savage 111 in 257 Roberts AI.
Normally I shoot 100gr through 120gr bullets in it.

Browning A Bolt SSA in 25 WSSM.
100gr through 120gr bullets.

Ruger 77 MKII in 25-06.
115gr-120gr bullets. The 115gr Berger VLD and Nosler Ballistic Tips work great in this!

Weatherby Mark V Ultra Lightweight in 257 WBY Mag.
115gr- 120gr bullets in this hotrod!
I have some 120gr Blackhole ULD bullets on order to try in this.

Lots of chamberings to look at!
Each has it's good and bad.
As mentioned, the 25-47, 25BR, 25-284, 25-350 Rem Mag are other options also.

I have an unfired 26" Shilen HV for a small shank Savage, chambered in 250 Savage, I'm going to be selling.

 

[Bill K]

Keep it simple yet effective with one of the best 25 calibers. ( 25-06) dies, brass easy to obtain and less costly than many other cartridges.

 

[Preacher]

25-284 is the do all in 25 caliber non magnum...

 

[Kevin Taylor]

<——— and then there is 257 Roberts,

 

[dk17hmr]

I have a 1:10 25-223 that is very accurate with pretty much everything 100gr ans less. Speer 87gr tnts are very cheap and shoot in the 3/8" range for me at 100.

Depending on if you want a hunting rifle or a target rifle a 25BR would be very interesting

 

[RGRobinett]

At MV above 1500 FPS, your 1:10.5" twist should be ok-good (> Sg 1.4) with BT bullets up to about 1.10" long, and [mathematically] better with FB bullets of equal length. Presuming decent jackets, anything shorter should work well. From BR tournaments, through hunting, 25BR; 25x47LAPUA; 250/3000 Ack. Imp.; 257Roberts Ack. Imp.; 257IdiotMag (25/300WSM) all serve me well.
The worst hurdle is the [relatively] limited bullet selection. For pure precision, I'd opt for either 25BR, or, 25x47 LAPUA. RG

 

[std7mag]

At MV above 1500 FPS, your 1:10.5" twist should be ok-good (> Sg 1.4) with BT bullets up to about 1.10" long, and [mathematically] better with FB bullets of equal length. Presuming decent jackets, anything shorter should work well. From BR tournaments, through hunting, 25BR; 25x47LAPUA; 250/3000 Ack. Imp.; 257Roberts Ack. Imp.; 257IdiotMag (25/300WSM) all serve me well.
The worst hurdle is the [relatively] limited bullet selection. For pure precision, I'd opt for either 25BR, or, 25x47 LAPUA. RG

And if his muzzle velocity were say, 3,000 fps??

Forgot to mention the 25 Souper.
Aka 25-308.

 

[long40shot]

I am fairly new to the quarter bore world. I have a 257 Bob Ackley. It shoots very well with the 110 hornadys. I would like to get some of Randy's boolits to try. During my fire forming, the 87grn sierras actually grouped very very well. I had my rifle built on a short action, mainly because that's what I had. For the longer bullets, seated out long, a long action would be a better choice, if a repeater is what you want. After reading the posts before me, the thought of a 25-223 or a 25br sounds really fun.

 

[806guns]

25 Saw West texas ordnance made from 7 SAW, neck down in two steps. Preffered Barrel Blanks has a reamer. https://westtexordnance.com/25-saw-cartridge-development/

 

[std7mag]

I am fairly new to the quarter bore world. I have a 257 Bob Ackley. It shoots very well with the 110 hornadys. I would like to get some of Randy's boolits to try. During my fire forming, the 87grn sierras actually grouped very very well. I had my rifle built on a short action, mainly because that's what I had. For the longer bullets, seated out long, a long action would be a better choice, if a repeater is what you want. After reading the posts before me, the thought of a 25-223 or a 25br sounds really fun.

Kimber had a proprietary cartridge made for one of their rifles some years ago.
257 Kimber.
Based on the 222 Rem Mag case, it was necked to 25 caliber, then fire formed pushing the shoulder forward.
Goal was to duplicate 250 Savage performance with the small action that they had.

Don't forget the 25-45 Sharps!!

With my 257 Roberts AI, i've found it to be just as accurate as my standard 257 Roberts when fire forming.

Side note, all my 257 Roberts and AI are formed from 7X57 Mauser casings.

 

[dk17hmr]

My 25-06AI 1:10 is an awesome hunting combo also. 100gr TXS at 3550fps. The down side is lack of good brass without a fair bit of work.

 

[3Ackleys]

25 Creed is the easy button. Factory brass from peterson or use 6 creed Lapua brass.

 

[RGRobinett]

And if his muzzle velocity were say, 3,000 fps??

Forgot to mention the 25 Souper.
Aka 25-308.

Once the MV & twist rate produce > Sg 1.4, increasing the velocity isn't worth consideration - "it's all about" twist rate: bullet length. For practical application, using Std conditions and MV above 2K FPS will let us know if we are using an adequate twist rate. Based upon 35 years of "testing*" the math - for the last 20+ years, I have never purchased a barrel which will produce less than Sg1.4 at Std (sea-level) conditions - form there, it only gets better.
For example: a 68 gr. FB 6mm bullet, via 1:14" twist:
1) 2000 FPS MV - Sg 1.298
2) 3000 FPS MV - Sg 1.358
Very marginally better - now, if we begin with MV at about 3K and above, Sg increase with velocity is considerably lower - nearly [only] 50% gain for 1K FPS. The same bullet @ 3K = 1.359 (2 above), jacked-up to 4,000 FPS MV, Sg 1.390. Changing the caliber/weight won't alter the relativity . . . just the numbers.
RG

*When it comes to making "cup-and-core" bullets, if you can imagine it, I have probably invested the time and $$$ in doing/exploring IT, and learning/confirming the "rocket science".

 

[AWS]

20 years ago I looked seriously at the 257 Kimber. 204 Ruger brass just became available and I realized it was nearly a clone of the Kimber and could be made into the 25-204 with just necking up and no serious case forming involved. I built the 25-204 in 2005 and have been very happy with it since. 100gr bullets at 2850 fps have worked great on deer and 75s at 3150 do a number on coyotes. Next month I'll be hunting javelina with 85gr NBTs with it.

If I were to do it today I'd look seriously at doing it on the Grendel case and building on one of the mini-actions what a neat little hunting rifles that would make.

 

[STOMP442]

I would do the tried and true 250-3000 and I would run the 87gr sierra for maximum accuracy in that twist. Excellent bullet for coyotes and deer alike.

 

[Cloudrepair]

Thanks all
I'm around 5000 to 6500 elevation
I'm leaning at the 25x47L or 25br will that twist handle a 100gr tsx?

 

[RGRobinett]

Thanks all
I'm around 5000 to 6500 elevation
I'm leaning at the 25x47L or 25br will that twist handle a 100gr tsx?

I do not know the length of the monolithic bullets - except that, for weight, they are LONG. The TSX may work fine - they were probably made to "work" well enough via the industry standard 1:10" twist. Keep in mind, < Sg 1.4 is not a wreck - it simply erodes BC and, at some point, precision. Thinner air is your friend. RG