Benefits of the 1/4 bore?

[Creedmoor shooter]

I guess my thing with the 257 cal is you can take any 25 cal and neck it up to a 6.5 or down to a 6mm and get the same or better performance. Let's take the 25-06 for example. The 6.5-06 with 120s is the same thing then you have the option of going up to 140 or even 160 class which will paste a 25-06

Then we can go 6mm-06 with 105s and blistering fast speeds to shoot flatter than the 25 variant while still maintaining nearly the same energy.

So the thing I struggle with is why it's even in existence. The 6mm starts at 58ish and goes to 115. The 6.5 goes from 85-160. I belive the 257 is 75-120. The 6mm and 6.5s already have those weights covered.

 

[WeiserBucks]

PM sent to J E Custom

 

[RockyMtnMT]

I think a 257 Weatherby and some 128 gr Hammer bullets would make a nice hunting rifle. I think I'll check on a 7" twist barrel.

Roy would be proud.

We have exactly this build in process. Hoping it will be done soon.

Steve

 

[Edd]

We have exactly this build in process. Hoping it will be done soon.

Steve

Are you going to have a standard SAAMI chamber?

 

[RockyMtnMT]

Are you going to have a standard SAAMI chamber?

Yes we will. Can't see much reason to improve it in any way.

Steve

 

[Edd]

I wasn't sure if you were ok with having a .360" freebore.

 

[RockyMtnMT]

I wasn't sure if you were ok with having a .360" freebore.

Brian is doing this build. Not sure about the freebore but the Hammer Bullets do not care about jumping.

Steve

 

[HammerB1]

The reamer is SAAMI spec. The freebore will enable us to set long bullets out as far as we want. May be a single shot for the 128's but should be able to mag feed any of our others.
Brian

 

[RockyMtnMT]

[ame]https://youtu.be/5dc41a7DA8w[/ame]

Here is a video showing Kirby Allen taking a giant whitetail at 400y with 128g Hammer Hunter from his 257 Allen Mag. His shot is at 36sec into the video.

Steve