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257 v.s. 270 weatherby mag

by , Posted to on 11/03/2008 2:18 PM | "Quote" | "Quick Reply" |

Joined: 10/29/2008
Location: ND
Which gun would better all around between big game? I was wondering about ballistics between the two guns. I do like the 270 because of the different load options, but i hear alot of good news about the 257. I am going to mostly be shooting deer with this gun.
Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 2:28 PM | Reply #1 | "Quote" | "Quick Reply" |

Joined: 08/12/2003
Location: ND
Both will kill any deer if you're close enough to put a bullet into it's vitals, whatever range that may be as your skills allow.

This moment is a paradox, it's the oldest you've ever been as well as the youngest you'll ever be.


Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 2:36 PM | Reply #2 | "Quote" | "Quick Reply" |

Joined: 10/24/2005
Location: ND
What Horsager said...

the 257 shoots a 120 around 32-3300
the 270 shoots a 130 to roughly the same speed.

The main difference is BC and TKO(from the larger diameter)

I'm the devil's son..... call me young gun.

Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 2:46 PM | Reply #3 | "Quote" | "Quick Reply" |

Joined: 03/27/2007
Location: ND
If you are going to have a pure deer/antelope rifle with maybe a few coyotes on the side. The 257 is your caliber. Like they said above, anything larger go with the 270 for versitility.
My 257 is my go to deer round. I can't think of needing anything else.
Supposedly Roy Weatherby used his 257 for cape buffalo. I know I would never go that far, maybe because I would never be able to aford it! ;-)
Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 2:51 PM | Reply #4 | "Quote" | "Quick Reply" |

Joined: 08/12/2003
Location: ND
The 100gn TSX is "THE" bullet to shoot from a 257Wby. Our steel targets are so hard that brand new drill bits in a press won't really even leave a mark on them. At 200yds the 100gn TSX from a 257Wby popped a much cleaner hole through the target than did the plasma cutter we used to make hanger holes. That combo is some kinda wicked!

This moment is a paradox, it's the oldest you've ever been as well as the youngest you'll ever be.


Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 2:58 PM | Reply #5 | "Quote" | "Quick Reply" |

Joined: 10/24/2005
Location: ND
Not every rifle tunes to a specific bullet.
In all honesty, I have tried barnes in half a dozen rifles.
The best groups I have ever gotten from them is around 2 inches... which is needless to say pitiful. The etips are NOT much better.

I'll stick with a hotcor, bonded or a standard nosler/seirra... I have had the best tuning luck with standard everyday bullets.

I'm the devil's son..... call me young gun.

Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 3:03 PM | Reply #6 | "Quote" | "Quick Reply" |

Joined: 10/24/2005
Location: ND
I should rephrase that..
I have had my best luck NOT using copper clad alloy bullets or expanding solid copper projectiles.

I would however like to try GS custom bullets... But I'll be &(^() if Im going to pay 2$ a bullet from south africa.

I'm the devil's son..... call me young gun.

Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 3:16 PM | Reply #7 | "Quote" | "Quick Reply" |

Joined: 08/12/2003
Location: ND
For the TSX to shoot well in my experience you either gotta engage the lands a bit or back off their recomended .05" or more.

Hard to fathom they are THE most accurate bullet in at least 15 rifles between pards and myself and you can't make them shoot too. TSX is an entirely different animal from the X or XLC.

Kimber Montana's in 243 and 7-08
Rem 700's in 25-06, 280, and 7-08
Wby Vanguard in 7-08
Win 70's in 257Wby (custom tube), 270Win, 300Win mag (x3)
Wby MkV in 300Wby (custom tube)
Tikka T-3 in 270 WSM
Ruger 77MkII in 300WinMag,

A fair representation of a good portion of readily available factory rifles with of course the two noted exceptions.

This moment is a paradox, it's the oldest you've ever been as well as the youngest you'll ever be.


Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 3:43 PM | Reply #8 | "Quote" | "Quick Reply" |

Joined: 10/24/2005
Location: ND
Ive played with the TSXs primarily...
Ive done their reccomended,max oal... you name it.. I have yet to find a combination that will function... the latest has been the 270 win..
Heck that bullet has completely different harmonics than a standard lead core bullet, which is understandable.

The best I found with the 270 with that bullet is a stiff charge of rl22 with a wlr. I found that 60gr of retumbo and a 130 ballistic tip does sub moa ~.7in all day long.

Not too mention, at the price of the barnes bullets, you surley are not getting your moneys worth out of them by plinking paper or harvesting bambi.


Id be more than happy to use a TSX on an elk or some other heavy boned critter.

I'm the devil's son..... call me young gun.

Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 3:44 PM | Reply #9 | "Quote" | "Quick Reply" |

Joined: 10/24/2005
Location: ND
What are the specs of the 270 win load you ran the 130 tsxs with?

I'm the devil's son..... call me young gun.

Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 3:47 PM | Reply #10 | "Quote" | "Quick Reply" |

Joined: 10/03/2007
Location: ND
find the lands with a TSX and you'll find happiness.

<a href='http://militarysignatures.com'> <img src='http://militarysignatures.com/signatures/member758.png' bo

Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 3:53 PM | Reply #11 | "Quote" | "Quick Reply" |

Joined: 08/12/2003
Location: ND
In the 270Win, 140gn TSX's and Ramshot Hunter at max from the XBT data on the Ramshot powder's website. OAL is whatever fits in a Winchester LA magazine, I've no clue where I am in relation to the lands, well off is my guess.

This moment is a paradox, it's the oldest you've ever been as well as the youngest you'll ever be.


Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 4:17 PM | Reply #12 | "Quote" | "Quick Reply" |

Joined: 08/12/2003
Location: ND
140gn TSX is 3100fps from a 22" bbl using that data.

This moment is a paradox, it's the oldest you've ever been as well as the youngest you'll ever be.


Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 4:19 PM | Reply #13 | "Quote" | "Quick Reply" |

Joined: 01/23/2002
Location: ND
I have the .257 mag and I have found 68 grains of H4831 sc will produced excellent results, usually dimes size groups with two holes touching, and one just off. I have taken mule deer, antelope and trust me its a great caliber. This week I will see how my 100 gr tsx loads will perform, last year I was shooting weatherby factory ammo, while accuracy was acceptable the bullet was not in my opinion. If you can only have one gun I may lean towards the 270 simply because I wouldnt hesitate to use it for moose or elk but for simply deer I would opt for the smaller caliber. Recoil is so light its a joy to shoot, great gun for women and kids. Im gonna have to buy another .257 because after my wife shoots it this weekend i bet i wont get it back! Bottom line they are both great guns, you'll enjoy either one! Good luck on your decision.
Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 4:43 PM | Reply #14 | "Quote" | "Quick Reply" |

Joined: 10/24/2005
Location: ND
Never have tried ramshot powders...
I'll have to give it a go...

I'm the devil's son..... call me young gun.

Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 5:31 PM | Reply #15 | "Quote" | "Quick Reply" |

Joined: 04/08/2003
Location: NA
i would look at the ballistics of factory loaded wby mag ammo and then consider what you can do with handloaded standard cartridges. I have a 270 win shooting a 130 Hornady SST interlock. It is coming out at 3160 not that different from the 3300 of the wby mag. But the reason of my spiel is that you will find brass cheaper and a larger selection of guns chambered for this round. It doesn't have to a 270 win either you could chose a 264 win or a 260 Remington or whatever and still have a fine deer rifle. I personally will never leave my 270 win.
Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 6:02 PM | Reply #16 | "Quote" | "Quick Reply" |

Joined: 09/14/2006
Location: ND
I currently have a .257 and used to shoot a .270. Not much diiference on the impact end when you hit a deer or antelope sized animal. Stay away from the factory 100 gr spire points and 115 gr NBT on large bodied deer. I had some bad experiences at less than 100 yards of bullets going to pieces on the entry side, the bullets are just going too fast yet on impact. I switched to 120 gr NP and it works extremely well with big exit holes at any range. Love the round, my accumark is pretty accurate, recoil is minimal and if you PRACTICE you can shoot game at extended ranges.
Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 6:20 PM | Reply #17 | "Quote" | "Quick Reply" |

Joined: 01/14/2008
Location: ND
I have a 257 wby. it likes RL-25,75grs. 3.310 oal. It will shoot 1/2 in. group, fps ? Get a 257 and you will not look back. They are a hot rod.
Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 7:23 PM | Reply #18 | "Quote" | "Quick Reply" |

Joined: 08/12/2003
Location: ND
Ramshot Hunter is very nearly the same burn rate as R-19, but, it's a spherical powder and runs through a Dillon automatic powder measurer like it's got it's own eyes.

I run Ramshot Magnum in the 257Wby, it's right next to R-25 and Retumbo on the burn rate chart. It gave me the lowest ES/SD and better velocity than '22 or '25, didn't try Retumbo. I'm 3.360" and well off the lands due to my 257Wby being chambered with the factory free-bore.

This moment is a paradox, it's the oldest you've ever been as well as the youngest you'll ever be.


Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 7:38 PM | Reply #19 | "Quote" | "Quick Reply" |

Joined: 01/14/2008
Location: ND
I am having a 257 wby. built. With a 28 in tube it will have no free bore. About 12 more weeks. I am hoping for 3800-3900 with 100 TSX.
Re: 257 v.s. 270 weatherby mag
by on 11/03/2008 7:52 PM | Reply #20 | "Quote" | "Quick Reply" |

Joined: 08/12/2003
Location: ND
I ran my load through Quickload and came up with 3819FPS changing nothing except the bbl length. The right combo may get you there. Throating will be key as you don't want it so short that the bullet eats capacity. The 100gn TSX at Wby velocities appears to quite possibly be the best "killing" bullet I've used. I've several deer tags to fill as a means for confirming that.

This moment is a paradox, it's the oldest you've ever been as well as the youngest you'll ever be.


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Posted On: 11/03/2008 2:18 PM
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Tags: 0, 1, mag, v.s, weatherby, gun, game, wondering, ballistics, guns
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Region: North Dakota

Categories: Hunting > Guns and Ammo - Shotguns, Rifles, Airguns, Handguns
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