Thread: groups gone to the dogs

iv put 2 boxes through my new 7mm rem mag, now im finding my groups are going to the dogs, started about 2 inches at 100m, now im lucky to keep it on the paper.... its getting a bit disheartening that my new rifle wont shoot now. i started by shooting and cleaning every shot to avoid fouling, but is this the main reason my groups are getting worse? iv shot my other rifles and havent had any issues like this.

Check the action screws, base screws, ring screws.

Flinching? (You'll know)

Faulty scope? (doesn't sound quite right for this)

I guess you have checked all the obvious things like loose action screws and mounts etc.

Looks like you posted as I was typing

I'd be looking at the scope, if it's not on the paper I'd bore sight it at 50 metres then shoot it and if it opens up reborn sight it an see if the point of aim has moved. I think it would be an easy prob to solve

Is that copper fouling? In that photo. Maybe a build up there, how many shots all up?


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i dont think its the scope..... mounts are solid as, iv shot magnums for years now with great sucess so im pretty sure its not me....

what about taking it off the stock when i clean it/adjust the trigger? i always do it up to the same tension.... but since its bedded would it matter?

Originally Posted by Danny

Is that copper fouling? In that photo. Maybe a build up there, how many shots all up?


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i think it could be, never seen it before, and iv run copper cutter and hoppes no9 through it a few times today and theyre coming out clean

Could it possibly have some dirt or object touching the barrel?
Tried a different type of factory bullet?
Definitely looks like it's got a build up going on there but hey I'm no expert. At all.


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That looks like a pretty mean chunk of copper on the far side of the bore at the end of the muzzle, hard to tell from pic but if be looking more into that

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Originally Posted by distant stalker

That looks like a pretty mean chunk of copper on the far side of the bore at the end of the muzzle, hard to tell from pic but if be looking more into that

ah ok i was beginning to wonder, i also thought maybe it was just the black coming off the rifling or somthing like that, iv put tons of copper cutter through and the patches are all clean. i thought id see what you guys thought tho

Originally Posted by Danny

Attachment 41991


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that pic does make it look pretty bad if tis copper haha, time to get the cold chisel and the 1lb hammer out....

Maybe try a different brand bullet I use Norma 140 gram in my 7mm all good so far

There's not a prob inside the scope?