338-378 Weatherby Magnum broke another scope.

dfraser

dfraser

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Can anyone give me a heads up for a scope that can survive living on top of my 338-378 with a monster bench rest muzzle brake attached.

Took about 9 shots at the range to kill off a Sightmark Triple Duty 4-12x.

Killed off a Sightron S3 three weekends ago

Killed off a Leupold V3 before that.

No matter how much I tightened down the rings around the Sightmark tube last night, The scope shifted about an inch in the rings today. Paid 150$ for it, was using as a sacrificial scope to try tightening the holy crap out of the rings around it

All scopes just stop tracking and the elevation turrets work intermittently.

Can anyone recommend a scope that will survive this setup.

Regards
 
If you have a brake on it, might not be recoil killing the scopes.
How close are your rings to the windage/elevation turrets?
 
Hey, all, thanks for input

Here are my setups:


This is the damaged Sightmark that broke today at the range, Leupold Rings:
IMG_20171009_201431.jpg


This is the damaged Sightron S3 with Millett Rings setup:
IMG_20171009_201519.jpg


This is the Muzzle Brake, it is a Vertebrea made in sweden.
IMG_20171009_201541.jpg
 
I have a Ziess on mine haven’t had a problem, I would go with a set of rings that are wider then the Leupold and lap them for more area.
 
Get yourself a mount from NEAR (Richard) and put a Nightforce et al. on and be done with it. I've had a few of the accumarks in the bigger calibers and near mounts are all I use. With what the accumarks cost, they deserve the best mounting system.

Edit: feel free to call him. He is very generous with his time.
 
kman300 said:
Get yourself a mount from NEAR (Richard) and put a Nightforce et al. on and be done with it. I've had a few of the accumarks in the bigger calibers and near mounts are all I use. With what the accumarks cost, they deserve the best mounting system.

Edit: feel free to call him. He is very generous with his time.
Click to expand...

Thanks for that, I will contact him.

Thinking that buying brand name rings from the shelf is obviously not working out here with this rifle.

Regards
 
Those dinky millet or whatever bases are on there definitely look like a weak point. Are they aluminum?

Like mentioned above, are you shooting this in a lead sled, or is there something between the rifle and your shoulder for recoil? Setups like the lead sled are scope killers, as they do not allow the rifle to recoil, instead of your shoulder absorbing most of the energy, the scope takes most of it.
 
dfraser said:
Thanks for that, I will contact him.

Thinking that buying brand name rings from the shelf is obviously not working out here with this rifle.

Regards
Click to expand...

One thing to never cheap out on is your scope mounting, I have the near mount as well and it's fantastic. The way I always look at it is when your out hunting or shooting if your rifle ever takes a fall you want to know that it will likely hold zero. Nothing worse than hiking 10km having your rifle take a fall and loosing zero. I had a Bushnell or my matc rifle that took a tumble and while the elevation turret was no longer functional it held zero and I was able to use the reticle for holdovers.
 
Slap a set of Mark 4 rings on there and it'll never move again. A lapping bar is your friend for hard kickers and any scope you care about.

I'm curious as to which Leupold rings those ones are. Maybe its just the picture, but it looks like flat-top, half shell, two Allan screws?
 
DMS1 said:
Those dinky millet or whatever bases are on there definitely look like a weak point. Are they aluminum?

Like mentioned above, are you shooting this in a lead sled, or is there something between the rifle and your shoulder for recoil? Setups like the lead sled are scope killers, as they do not allow the rifle to recoil, instead of your shoulder absorbing most of the energy, the scope takes most of it.
Click to expand...

It is up against my shoulder, bipod out front, bean bag in the back.

Yes the rings are Millett and are the aluminum ones.

Can't thank you guys enough for helping me out so far.

Regards
 
Your rear ring on the sightmark was definitely over the erector tube and could be the cause... it's a #### Chinese scope though, so might just be the quality.
Pretty close with your sightron as well, I can see where the ring started before it slid.
Your mounting setup sucks though, need to upgrade rings and bases big-time. TPS rings are good and not crazy expensive. Steel Warne or Steel Weaver bases at minimum.
 
I use Vortex/Seekins two piece rings or Spuhr one piece mounts. When I first started long range shooting I had a 338/378WM with Razor HD gen i scope, that scope lasted about 20rds then the elevation turret seized. I upgraded to a S&B PMMII and never had a problem again. Sold the Weatherby a few months later and bought a Sako TRG.
 
Last edited:
Hey all,

Just a quick update

I talked with a Sightron technician in the USA. He is absolutely adamant that the SIII 8-32x56 that I have can definitely live on this rifle long term without a hiccup.

So I communicated with Richard at Near Manufacturing, and definitely my mounting selections in combination with this particular muzzle brake that I have installed is the direct cause of scope failures. The muzzle brake is a perfectly fine brake, but not under the setup that I have.

Since he is not too far away from Edmonton, I am going to work with him on coming up with a solution to address my problems that I am having.

Regards
 
It looks like you have sub par rings. You can see the marks on the scopes from the rings slipping on the scope. What indication other than point of impact change are you seeing with the damaged scopes? There are much harder recoiling rifles out there with scopes.
dfraser said:
Hey, all, thanks for input

Here are my setups:


This is the damaged Sightmark that broke today at the range, Leupold Rings:
IMG_20171009_201431.jpg


This is the damaged Sightron S3 with Millett Rings setup:
IMG_20171009_201519.jpg


This is the Muzzle Brake, it is a Vertebrea made in sweden.
IMG_20171009_201541.jpg
Click to expand...
 
my unbraked 338LM has a NXS 8-32 and it never mooved. but I only use good rings( TPS,Badger,MarkIV) on all my rifles.

the day you will dropa good scope in Badger rings you will understand why I dont waist my time with garbage like burris stuff.

you use an extreme recoil rifle with a very heavy scope. regular hunting mounts are not made to handle that kind or stress.

millet stuff is good for 22LR

So I communicated with Richard at Near Manufacturing, and definitely my mounting selections in combination with this particular muzzle brake that I have installed is the direct cause of scope failures. The muzzle brake is a perfectly fine brake, but not under the setup that I have.

you called the right guy, lissten carefully
 
I've only got one Near Alpha mount to base an opinion on, so it might seem
like jumping to conclusions by describing it as a work of art. Be that as it may,
I'm going to do it anyway. :).
 
My .338 RUM wears a Zeiss mounted in Leupold rings, and has not moved in over ten years. Prior to that, when I first got the gun, it went through one scope after another. In hindsight, it was more about the rings and mounts than anything else. Keeping it locked down tight seems to be the ticket to success. Also, placing your rings in optimal places on the scope seem to play a direct part in everything holding together too.
 
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