7mm Rem Mag confusion..........advice please

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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.

Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
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Scotsgun

7mm Rem Mag confusion..........advice please

#1 Post by Scotsgun »

Right, I need some advice from the reloading gurus. I know very little beyond basic reloading so need some guidance on where to go next.

I recently bought a very underused Sako TRGS M995 in 7mm Rem Mag. Essentially a mate bought it and realised that he disliked the recoil. He downloaded the rounds, fitted a kick-eez pad and still found it unpleasant. Perhaps his other rifle being a 243 contributed. Anyway it collected dust a while and now it's mine.

Problem is that although barely shot-in, I'm underwhelmed by the accuracy. Yes it'll shoot MOA but nothing spectacular and I've noticed something strange. It'll shoot approx MOA at 100-250 and then it tightens up! It's like the bullets stabilise into a sweet spot. Continuing out to approx 500 before opening up. Only this morning I shot a 3-shot group at 500yds which was just over 3 inches. However I struggle to achieve this at 250 yds. It defies the laws of physics!

It's driving me nuts. I've tried all manner or bullets, powders and loads; right through from little 110gr to stupidly long and heavy Berger VLDs. God, VLDs. I could fill endless threads with my dramas with those buggers. Never again. Of them all, the most consistent bullets have proved to be 140gr Nosler Btips, 140 great Sierra products hunters and 139 Hornady SSTs. There really isn't much in it, so I chose to continue with the SSTs due to availability.

Powders. Most consistent for the SSTs and the other bullets of similar weight are 62gr of Vhit N560, 63grs of Ramshot Hunter and 74grs of Ramshot Magnum. Unless someone can advise otherwise and end my confusion, i'll keep with the Vhit N560 and the SSTs. However the important point is that the weird spot thing remains; the spot may shrink or grow in yds but the best is largely with the load chosen. I just need for it to 'stretch' down to 200yds and out to 1000. I got this rifle with the hope of it being my primary culling rifle.

Help. All sane advice gratefully received.
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dodgyrog
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Re: 7mm Rem Mag confusion..........advice please

#2 Post by dodgyrog »

Is the barrel touching the channel in the stock at the forend?
Purveyor of fine cast boolits.
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Scotsgun

Re: 7mm Rem Mag confusion..........advice please

#3 Post by Scotsgun »

Nope. Nor is the scope loose anywhere or the bedding rough. I'm starting to loose sleep over this one.
Blu

Re: 7mm Rem Mag confusion..........advice please

#4 Post by Blu »

Scotsgun, I had a very similar problem with a Tikka 270WSM and it turned out to be nothing to do with the ammunition mate. I won't say any more than that for now but will wait and see what advice is given and how you get on with it. Suffice to say I sorted the problem out and the rifle now shoots real sweet.

Blu :twisted:
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Graham M
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Re: 7mm Rem Mag confusion..........advice please

#5 Post by Graham M »

How long is the barrel?
G.M.
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ovenpaa
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Re: 7mm Rem Mag confusion..........advice please

#6 Post by ovenpaa »

What is the barrel twist and are you shooting it with a suppressor?
/d

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tackb

Re: 7mm Rem Mag confusion..........advice please

#7 Post by tackb »

Blu wrote:Scotsgun, I had a very similar problem with a Tikka 270WSM and it turned out to be nothing to do with the ammunition mate. I won't say any more than that for now but will wait and see what advice is given and how you get on with it. Suffice to say I sorted the problem out and the rifle now shoots real sweet.

Blu :twisted:
I don't get this post ? why not help him yet?
Blu

Re: 7mm Rem Mag confusion..........advice please

#8 Post by Blu »

tackb wrote:
Blu wrote:Scotsgun, I had a very similar problem with a Tikka 270WSM and it turned out to be nothing to do with the ammunition mate. I won't say any more than that for now but will wait and see what advice is given and how you get on with it. Suffice to say I sorted the problem out and the rifle now shoots real sweet.

Blu :twisted:
I don't get this post ? why not help him yet?
Because I want the guy to explore every possible avenue before I throw in my tuppence worth and besides, even though I had a similar problem his may require a completely different solution. There are a lot of very knowledgeable folks on here way smarter than me, I'll pitch in when time comes and if needs be.

Blu :twisted:
tackb

Re: 7mm Rem Mag confusion..........advice please

#9 Post by tackb »

fair enough , seems a little odd to me though?
Blu

Re: 7mm Rem Mag confusion..........advice please

#10 Post by Blu »

tackb wrote:fair enough , seems a little odd to me though?
Makes perfect sense to me :grin:

Blu :twisted:
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