257 Wby Mag


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1948CJ2A
December 28, 2011, 05:13 PM
I just picked up a new rifle in 257 Wby Mag. I have 2 other 25 caliber rifles (1) 250-3000 Savage and (2) 25-06 Rem. In both of these I shoot Nosler ballistic tip bullets with the primary function being whitetail deer hunting in fairly open Texas country.

With the velocities of the 257 Wby Mag, the ballistic tip seems too agressive... in other words I'm worried how it would hold together on impact. A couple years back I shot a bobcat with my 240 Wby Mag using a Nosler 95 gr ballistic tip. It sure seemed like there was too much rapid expansion. I'm concerned with that same issue in the 257 Wby.

That said, what are the whitetail deer hunters reloading for this particular cartridge? I'm looking at the Nosler Partitions as well as the Sierra GameKings.

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JimKirk
December 28, 2011, 07:46 PM
The Nosler Partitions, Sierra Gamekings and the Nosler Accubonds will be good...

Any of the bonded bullets or the monolithic like the Barnes are good stuff....if your rifle will shoot them.

Goose will be along shortly... he has lot of experience with the 257 WB... along with others....

NCsmitty
December 28, 2011, 08:32 PM
Hornady Interbonds and Nosler Accubonds are priced right and solve the fragmenting that plain bullets can do when subjected to the velocity capability of the 257 Weatherby. Accuracy may be the next challenge to check.



NCsmitty

1948CJ2A
December 29, 2011, 10:36 AM
I was thinking the Accubonds would be a good fit. I'll load some up and see how they shoot.

Anyone had good luck with any particular powder(s)? I figured the slower burning powders would work best. I was looking through the latest Nosler book last night and got some ideas from there.

Thanks,

JW

JimKirk
December 29, 2011, 10:11 PM
Give IMR 7828 a try... I emailed Nosler and they said to use the BT data for the 110 gr Accubonds....

LeonCarr
December 29, 2011, 10:19 PM
An Uncle of mine hunts exclusively with the .257 Weatherby Magnum and swears by 115 grain Nosler Partitions and IMR 7828. Sub-MOA and never fails to make an exit hole.

Just my .02,
LeonCarr

GooseGestapo
December 30, 2011, 04:44 AM
Yeah, Jim was right, I couldn't pass on a thread on the .257wby.

Yeah, the Ballistic Tips are too soft for the .257wby for shooting deer. I had one (115gr.)blow up on a doe in '07, and never found her. (I've even had the 100gr do the same from the Roberts. But, to be honest, that bullet/loads were from the first batch released by Nosler back in 1987). Knocked her down, and watched her get up and run off. Didn't shoot again as I figured she'd go down shortly. She made it over the hill and out of sight never to be seen again. I'm sure the coyote's found he later that night...... there were shreds of "meat" the size of commercial "beef jerky" lying on the ground and hanging from shrubs nearby and even from an over-hanging dogwood tree. The bullet totally failed to penetrate deeply enough on a ~110yd shoulder shot. The particular load was 77.0gr of WC-860 and a Federal 215 primer and a reformed Remington 7mmRemMag case. Chrono'd at 3,300fps. The same bullet (from same box of bullets...) from my .257Roberts @ 2,850fps and a similar shot placement on a ~140lb buck @ 175yds completely penetrated and left a 3" exit wound. Acceptable performance.

The Nosler Partitions are excellent in the .257wby. However, for smaller deer, antelope and the like, I'd just use a Sierra ProHunter or Hornady "Interlok". I've shot ~100lb does with the 100gr Hornady and the few bullets I've recovered performed just like I would expect a Nosler Partition. They mushroom perfectly and hold together with approximately 65% weight retention. The Sierra's might occasionally shed the jacket, but this isn't a big deal. The result is usually an instantly dead deer.

However, even with the 7mm08, I had a Nosler 150gr Ballistic tip "disintegrate" on a 80lb doe earlier this year. The spine shot was instantly fatal, but I was suprised to find the seperated jacket and the lead was fragmented into nothing larger than a #9 birdshot....
Hence, I don't care for the expense of the Nosler's. Ballistic Tips or Partitions.
Heck, I've been shooting some .257"100gr PrviPartisan soft-points that are near MOA and loading them over some WC-860 for some really inexpensive shooting. Even using reformed 7mmRemMag brass.... Talk about cheap!...... Just the thing for whacking Coyotes.

For powder, I've not found anything better in the .257wby than Reloader25. I'm using a near max load of 74.0gr with the 100gr bullets and 69.0 with 115-120gr bullets.(Norma/Wby brass) From my 24" bbl Vanguard, I'm getting 3,600fps and flatter trajectory than my .22-250. I sight in 2.5" high at 100yds and zero at 300yds. About 6" low at 400yds. (100gr bullets). Haven't had a chance to shoot a deer further than this. However, I'm sure if I place the bullet properly, they'll do the job.
Nearly as good as Reloader25 is IMR7828. Be cautious with this though. My Lyman #48manual data is way too hot for my rifle with the lot# of IMR7828 I have.

I've taken several deer with the above load at 300-400yds and were "bang-flops". Ditto a coyote I shot at ~200yds in '07 with the superb 120gr Speer "HotCor" over 74.0gr of WC-860..

When working up loads for this cartridge, look closely at the components used in the data. Speer uses Federal brass which has 2-3gr of powder lower case capacity than the Norma/Weatherby brass. Likewise, their data is worked up in a 24" bbl Remington. They don't have as much free-bore as the Weatherby/Howa rifles and hence the data is different.....
Both IMR and H4350 produced some fabulous accuracy with 100gr bullets, but top velocities are 3,450fps from a 24" bbl., which btw duplicates factory loads. Max is listed at 65.0gr but I found that 63.5gr was most accurate and max from my rifle....

FWIW; If I didn't have the quantity of WC-860 powder on hand (It's excellent with the 115-120gr bullets. Too slow for the 100gr bullets in the .257wby), I'd get some of the WC-872 that Wideners and JeffBartlet (www.gi-brass.com) have. You can buy this for ~$8.00lb and load a lot of ammo for just a few $.

Lloyd Smale
December 30, 2011, 07:49 AM
Ive shot a pile of deer with 100 grain bts and 100 grain sierras out of the 2506 and 257wby. they may not be the ideal bullet for shooting 50 yards in the brush but in open country ive yet to shoot a deer with one and not eat back straps the next day. Shoot a deer with any high velocity round in the shoulder at less then 200 yards and your going to have blood shot meat. I dont care if its a bt a bonded bullet or a partition. Hit them behind the shoulder with any of the three and the results will vary little between them. I dont use alot of premium bullets. Some partions and speer grand slams but thats about it. Ive got enough guns that i dont need to make a gun work on game animals i consider to big for it. So if a sierra or bt or a simular bullet wont do the job i grab a bigger gun. Id guess that 75 percent of what is called a bullet failure is shot placement failure. If your worried about damaging meat you sure shouldnt be shooting them in the shoulder to begin with. It would be very rare to come up with any possible senerio where ive shot a deer that i had to shoot it in the shoulder because i couldnt shoot it behind the shoulder.

1948CJ2A
December 30, 2011, 10:56 AM
Good info, especially from the Goose. This gives me some ideas to start testing out.

However, even with the 7mm08, I had a Nosler 150gr Ballistic tip "disintegrate" on a 80lb doe earlier this year. The spine shot was instantly fatal, but I was suprised to find the seperated jacket and the lead was fragmented into nothing larger than a #9 birdshot....
Hence, I don't care for the expense of the Nosler's. Ballistic Tips or Partitions.

I'm a 7x57 guy; not a fan of the 7mm-08. If you handload, you can get more velocity and energy out of the 7x57. I've had great luck with the 120 gr ballistic tips as well as those 139 gr Hornady spire points. I shoot 150 gr partitions in my 7mm Rem Mag. The 7mm is my second favorite rifle caliber (the first being 25 of course!).

The only deer I've ever had run off was one I shot many years back with a 243 Win. And it wasn't due to shot placement...

Also, probably worth mentioning is that our deer range from about 110 to 150 pounds.

Thanks guys,

JW

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