Results 1 to 13 of 13

Thread: 257 Weatherby Mag

  1. #1
    Member The Kid's Avatar
    Join Date
    Apr 2009
    Location
    Los Anchorage
    Posts
    1,041

    Default 257 Weatherby Mag

    I'm going to build myself a 257WM to use for a sheep rifle next fall and was wondering if anybody else up here hunts with one. I have zero experience with this caliber but a good friend who shoots one says it works like a lightning bolt on deer and antelope. Says when you hit them in the pump station they kinda stiffen up and just tip over.

    Im thinking it will make a dandy sheep and caribou rifle, maybe even black bears with a good bullet. It will be a wood stocked M70 with a 26" tube, talley LWTs and probably a fixed 6 Leupold. I plan to shoot 100gr bullets as they seem like a good compromise weight, and I have a couple hundred old style X bullets hopefully they shoot well.

    Anyone who has used one, I would be interested in hearing your experiences and any suggestions you may have.

  2. #2

    Default

    I've owned two and developed loads for others. Happiness for me revolved around the question of twist rate and freeboring on the early ones. The twist rate was so slow (can't remember now whether it was 1:12 or 1:14), but in any case it was so slow it would NOT stabilize any 115-120 grain spitzers. Even the 117 grain Wby factory loads featured a RN bullet to try to get around it. Crazy for such a long-range number.

    If you contemplate shooting heavier than 100 sometimes, I wouldn't go any slower than 1:10. But frankly based on my experience with 100's, if I built one today I'd go with 1:9 or maybe even 1:8 and the heck with 100's. I didn't particularly care for the remaining energy, etc, of 100-grainers past 400 yards even on deer, and you're really susceptible to expansion issues with them way out there. Even partitions were a wee bit tough for my tastes on one 465yard deer (lasered). It ran about 40 yards after a classic double-lung hit, and then just stood there wheezing. I moved my next shot forward through the shoulders to put it down, and the difference between wound channels was startling. I got the expansion I had expected from the lung hit when there was a little bone to help things along, but that first lung hit definitely did not expand. If and when I build another (and I plan to do so), it's going to have the faster twist and I won't be using any 100's. It will be my longrange deer number, and I'll be using 115-120 grain cup and cores. You'll have to answer the same questions for yourself about using it as a sheep gun. The trajectory is certainly there, whether 100 or 120, but I have more faith in the heavier version.

    If you're thinking of going to Barnes for your 100, I'd be looking at faster twists even if you never shoot anything heavier. The new lead-free iBullets are sooooooo loooooong that you have to contemplate twist rate carefully. Bonus points would be that with the faster twist for the Barnes you could still switch over to heavier bullets if longrange performance of the light mono-bullet left you twitchy.

    As for freeboring? I won't do it. I had a dickens of a time getting accuracy suitable for real longrange shooting with that big jump, no matter what it meant for extra velocity. I'll throat mine for the longer bullet I intend to use, then work up carefully toward max without regard to published ballistics about max with freeboring.

    I agree on the 26" barrel, but mine will be built on a Ruger #1. Heck I might even go 28" or 30" on a #1 and have a gun that's effectively not enough longer to notice, compared to a bolt.

  3. #3
    Member
    Join Date
    Jan 2007
    Location
    Southwest Alaska
    Posts
    1,912

    Default

    Do you have PT&G's book of chamber prints? If you don't, get it. If you do, change the reamer design to not have that mile-long freebore and make it tightnecked. Then you won't spend so much time trying to find a bullet it'll shoot.
    Great spirits have always found violent opposition from mediocre minds. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence. Albert Einstein

    Better living through chemistry (I'm a chemist)

    You can piddle with the puppies, or run with the wolves...

  4. #4

    Default

    If you go with a standard throat will you get much more velocity than a .25-'06 without running high pressures?

  5. #5
    Member ramhunter's Avatar
    Join Date
    Feb 2008
    Location
    Wasilla
    Posts
    613

    Default

    I have a 257 WM on a 700 rem action and Pac-Nor barrel, shoots unreal!....I shot the 100gr X bullets for years but have just went to the 115gr Berger, at 3500fps that thing is awesome!

    Have killed about 6 Dall rams, plus lots of other stuff, I have close to 50 rifles in all kinds of flavorings, including 25-284, 25-06, 25-06AI but my 257 WM is my favorite of all my guns!

  6. #6
    Member hodgeman's Avatar
    Join Date
    Jul 2008
    Location
    Delta Junction AK
    Posts
    3,184

    Default

    Quote Originally Posted by ramhunter View Post
    I have close to 50 rifles in all kinds of flavorings, including 25-284, 25-06, 25-06AI but my 257 WM is my favorite of all my guns!
    That's saying something!

    I have one acquaintance who uses the .257Roy...and he uses it for absolutely everything. There seems to be a unusually high level of satisfaction with guys who can shoot and use them a lot.

  7. #7
    Member
    Join Date
    Apr 2006
    Location
    Anchorage, Alaska
    Posts
    1,198

    Default

    A few years ago I built a custom 257WM (700 action, 26" Lilja 10 twist barrel, H&S stock, Timney trigger & safety, and lighter firing pin). I handload for it, and found that it loves 100grn TSX's. It is the most accurate rifle that I own.

    For the past few years it has been (and will continue to be) my spring black bear rifle. I've taken four black bears with it. Yardage has been from around 50 to 400yds (that one I lasered before the shot). Two of the bears (250 and 400) didn't know I was there, and it was like someone pulled their plug when hit with that little bullet...they just dropped and stayed down. The closest one (50) was trying to run away after being jumped, and piled up after one shot that traveled the entire length of its body before exiting. All bullets exited each bear. Two of them were just under 6 ft. One was over 6 ft., and one squared over 7 ft and made the book.

    I really like this caliber and encourage you to build one. You've already gotten great suggestions regarding twist rate. With my 10 twist I can't stabilize the 115 TSX's. I can do the 120 NP's and 120 A-frames. However, it shoots the 100TSX's so acurately and they do the job so well that I have just called it good with those.

    Good luck sir!!
    NRA Life/Benefactor Member

  8. #8
    Member The Kid's Avatar
    Join Date
    Apr 2009
    Location
    Los Anchorage
    Posts
    1,041

    Default

    I had planned on using a faster twist barrel after reading of the stabilization problems with the older MKVs. I will probably end up with the normal Weatherby freebored chamber, since a friend has a reamer he will allow me to use, more than likely it is a standard reamer. I really don't plan on shooting a long ways with this rifle, but it is nice to know you can hold on hair from zero to 400yds when heading into the mountains. I will try to keep the weight reasonable since it will be going on a long backpack hunt for it's maiden voyage. No heavy barrel, huge scope or bipod, just a normal weight hunting rifle. I don't really like the idea of a 26" barrel but in this case I know it is a must have so I'll live with it.

    My buddy who shoots one also has great things to say about Noslers 110gr Accubonds. Anyone used those, that might be a good compromise between weight and speed. I don't know my 25cal experience is limited to one buck whitetail shot with a 100gr CoreLokt from a 25/06 factory load, 13yd shot behind the ear can only have one ending.

  9. #9

    Default

    Quote Originally Posted by The Kid View Post
    but it is nice to know you can hold on hair from zero to 400yds when heading into the mountains
    I doublechecked with a buddy of mine who is a proven longrange specialist and has a contemporary fast twist. His go-to is the Sierra 117 boattail at a little over 3200. He's sighting in 4" high at 100, which puts him 5" high at 200, about 1" high at 300, dead-on at 330, and 6" low at 400. Pretty darned useful.

    As for why do it rather than a 25-06? I say why not have both. Most guys will do just fine with a 30-06 for about 98% of their hunting, but that hasn't slowed cartridge development or guys buying more. In truth, my 257 Roberts long throat and my AI have done anything I've tried with my 25-06, and in fact my 250-3000 would have taken care of 90% of that.

    Liking a cartridge has lots more to do with liking it than any ballistic justification for owning it.

  10. #10
    Member The Kid's Avatar
    Join Date
    Apr 2009
    Location
    Los Anchorage
    Posts
    1,041

    Default

    I have a 25/06 as well, and never use it, I probably haven't put 2 boxes of shells through it in the last 5 years. I am going to rebarrle it to 270 and restock it for my lady to use as her all around hunting rifle. She's been using an 06 and doing well but recoil is a bit much for her and she doesn't really enjoy shooting it. A 270 will be a good step down in recoil with enough gain in bullet weight over the 25/06.

    The real reason for this 257Wby project is that I have a magnum action lying around and want to build a new rifle to use on my first sheep hunt. I have plenty of larger rifles around and haven't had a burner in a while. I thought about some other larger calibers like the 7mms but the little 257 has caught my fancy. I like to build purpose built rifles to use on hunts that mean alot to me. It kinda ads to the overall experience and let's my trip start earlier with the rifle building and load development sort of being the beginning of the hunt for me. It sort of makes my hunting season last longer in a way.

  11. #11
    Member ramhunter's Avatar
    Join Date
    Feb 2008
    Location
    Wasilla
    Posts
    613

    Default

    Here's a Wolverine shot with my 257 WM...

    White Rock chuck shot at 398 yds, with the 115 Berger, shoots the 115 bergers under 1/4 groups at 100yds.......

  12. #12
    Member
    Join Date
    Jan 2007
    Location
    Southwest Alaska
    Posts
    1,912

    Default

    Quote Originally Posted by The Kid View Post
    I had planned on using a faster twist barrel after reading of the stabilization problems with the older MKVs. I will probably end up with the normal Weatherby freebored chamber, since a friend has a reamer he will allow me to use, more than likely it is a standard reamer. I really don't plan on shooting a long ways with this rifle, but it is nice to know you can hold on hair from zero to 400yds when heading into the mountains. I will try to keep the weight reasonable since it will be going on a long backpack hunt for it's maiden voyage. No heavy barrel, huge scope or bipod, just a normal weight hunting rifle. I don't really like the idea of a 26" barrel but in this case I know it is a must have so I'll live with it.

    My buddy who shoots one also has great things to say about Noslers 110gr Accubonds. Anyone used those, that might be a good compromise between weight and speed. I don't know my 25cal experience is limited to one buck whitetail shot with a 100gr CoreLokt from a 25/06 factory load, 13yd shot behind the ear can only have one ending.
    Decide on a weight, try to get everything as light as possible, and put the weight into the barrel.
    Great spirits have always found violent opposition from mediocre minds. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence. Albert Einstein

    Better living through chemistry (I'm a chemist)

    You can piddle with the puppies, or run with the wolves...

  13. #13

    Default

    Quote Originally Posted by The Kid View Post
    It kinda ads to the overall experience and let's my trip start earlier with the rifle building and load development sort of being the beginning of the hunt for me. It sort of makes my hunting season last longer in a way.
    Best reason of all for a new gun or making any of your own gear.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •