Hunting Washington Forum

Equipment & Gear => Guns and Ammo => Topic started by: h2ofowlr on July 17, 2019, 09:55:40 AM

Title: .257 Weatherby Mark V
Post by: h2ofowlr on July 17, 2019, 09:55:40 AM: I have a .257 Weatherby Mark V, but cannot seem to get a good group with it. Anyone have a similar rifle that have found a load that has shot well through it?
Title: Re: .257 Weatherby Mark V
Post by: MADMAX on July 17, 2019, 10:43:41 AM: Best tightest groups I ever got were from some reloads I got when purchased the rifle Barnes tsx not sure of weight as I did not reload them
Factory ammo I have been shooting partion 120s and I am confident in the gun and myself but groups could be tighter also
Also a MK V owner and I had the barrel cut down 3 inches and re-crowned
Try the Barnes and let me know if you work up a good load
Id be interested in how that works out for you as I do not reload
Title: Re: .257 Weatherby Mark V
Post by: yorketransport on July 17, 2019, 11:15:49 AM: What bullets have you tried?
Title: Re: .257 Weatherby Mark V
Post by: bearpaw on July 17, 2019, 12:31:42 PM: I've never seen a .257 WTBY that didn't shoot well until the barrel had been shot out. Most shoot well with any bullet I've tried. If your gun has been shot much perhaps the barrel has fouling? Is it a new gun or used, how many rounds through the barrel?
Title: Re: .257 Weatherby Mark V
Post by: h2ofowlr on July 17, 2019, 04:50:30 PM: Quote from: bearpaw on July 17, 2019, 12:31:42 PM
I've never seen a .257 WTBY that didn't shoot well until the barrel had been shot out. Most shoot well with any bullet I've tried. If your gun has been shot much perhaps the barrel has fouling? Is it a new gun or used, how many rounds through the barrel?

It’s a new gun. I think I have 36 rounds through it.
Title: Re: .257 Weatherby Mark V
Post by: bigdub257 on July 17, 2019, 05:05:10 PM: I've had real good luck with the Barnes 100 gr. TSX and TTSX. Quarter sized groups at 100 yds. Have also tried the 115 gr. Ballistic Tip and had pretty good results with those also, but going with the TTSX this year. Pretty wicked little bullet. Shooting a MKV Lightweight.
Weatherby ammo. I don't reload.
Title: Re: .257 Weatherby Mark V
Post by: Bob33 on July 17, 2019, 05:30:23 PM: For reloads I've had the best results with the 100 grain TSX bullet and RL22 powder.

For factory ammunition try the 100 grain Spire Points. If they won't shoot close to 1 MOA I would send the gun to Weatherby.

Good luck.
Title: Re: .257 Weatherby Mark V
Post by: h2ofowlr on July 17, 2019, 05:35:23 PM: Quote from: Bob33 on July 17, 2019, 05:30:23 PM
For reloads I've had the best results with the 100 grain TSX bullet and RL22 powder.

For factory ammunition try the 100 grain Spire Points. If they won't shoot close to 1 MOA I would send the gun to Weatherby.

Good luck.

I reached out to Weatherby to see what information they may offer. I am up for trying some re-loads as I have a bunch of brass for it that I picked up.
Title: Re: .257 Weatherby Mark V
Post by: bearpaw on July 17, 2019, 05:47:00 PM: Quote from: h2ofowlr on July 17, 2019, 04:50:30 PM
Quote from: bearpaw on July 17, 2019, 12:31:42 PM
I've never seen a .257 WTBY that didn't shoot well until the barrel had been shot out. Most shoot well with any bullet I've tried. If your gun has been shot much perhaps the barrel has fouling? Is it a new gun or used, how many rounds through the barrel?

It’s a new gun. I think I have 36 rounds through it.

Ok wow, I'm not sure what to offer! Have you tried factory loads, I think WTBY guarantees.99 MOA or better with their ammo.
I've shot Barnes, Hornady, and Sierra bullets and they all shot well, better than the guarantee, the caliber has been easy to reload for us. I'm curious what WTBY will have to say.
Title: Re: .257 Weatherby Mark V
Post by: bearpaw on July 17, 2019, 05:50:49 PM: We are constantly finding faulty mounting or faulty scopes on hunter's rifles that miss animals. Perhaps you have issues with the mounts, bases, or scope? Loose bases or rings, broken or cheap scopes are the usual causes? :twocents:
Title: Re: .257 Weatherby Mark V
Post by: mountainman on July 17, 2019, 06:44:08 PM: Pressure pad on stock? I always sand them off on weatherby's
Title: Re: .257 Weatherby Mark V
Post by: savagehunter on July 17, 2019, 09:33:24 PM: Action screw torque? Barrel free floated? Yo just have to inventory all possibilities until you eliminate the problem. Also have someone else shoot a group. Use a sled to eliminate user error
Title: Re: .257 Weatherby Mark V
Post by: h2ofowlr on July 18, 2019, 11:59:19 AM: Quote from: bearpaw on July 17, 2019, 05:50:49 PM
We are constantly finding faulty mounting or faulty scopes on hunter's rifles that miss animals. Perhaps you have issues with the mounts, bases, or scope? Loose bases or rings, broken or cheap scopes are the usual causes? :twocents:

Possible. I have the Zeiss Z-800 optic on it. I will have to check them out, thought they were mounted pretty solid.
Title: Re: .257 Weatherby Mark V
Post by: h2ofowlr on July 18, 2019, 12:01:47 PM: Quote from: savagehunter on July 17, 2019, 09:33:24 PM
Action screw torque? Barrel free floated? Yo just have to inventory all possibilities until you eliminate the problem. Also have someone else shoot a group. Use a sled to eliminate user error

We shot it on a sled. I shot my Tikka T3 right after that and had 3 shot group under a nickel. All my rifles are very accurate as I am a competitive shooter. It's just this gun that I have ran into this issue with.
Title: Re: .257 Weatherby Mark V
Post by: Bob33 on July 18, 2019, 01:53:15 PM: I've seen some not-so-nice bedding jobs on that rifle. You can work on it but might void the Weatherby accuracy guarantee. I'd be inclined to send it to Weatherby.
Title: Re: .257 Weatherby Mark V
Post by: rodell on August 13, 2019, 09:05:55 PM: I have a 257 Weatherby barrel for my Blaser R8.

My pet load is 70.8 grains of IMR7828SSC with a 100grain TTSX at 3.120". It consistently shoots under .5 MOA.