180gn Sierra 7mm

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Norm
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180gn Sierra 7mm

#1 Postby Norm » Thu May 22, 2014 9:42 pm

Anyone have much experience with the 180gn Sierra in 7mm.

I am thinking of trying them in a .284win barrel that is on its last legs to try and get a bit more life out of it.
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DaveMc
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#2 Postby DaveMc » Fri May 23, 2014 8:31 am

Yes Norm - a few of us up here have tried them and had quite some success. I will however say that we are all back on Bergers now but with no big reason :D
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Cameron Mc
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#3 Postby Cameron Mc » Fri May 23, 2014 8:35 am

Norm, I had a similar experience as Dave.
I guess the Berger marketing worked.

Cam
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Brad Y
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#4 Postby Brad Y » Fri May 23, 2014 8:53 am

Price wise the bergers would probably be more attractive too? I see the price on the lapua 7mm 180gr isnt all that attractive! I would hate to have a barrel that only liked those projectiles!
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Quick
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#5 Postby Quick » Fri May 23, 2014 9:03 am

Wheres the prices on the lapua 180gr?
Shaun aka 'Quick'
Yanchep, Western Australia

308 Win F/TR & F-S
7mm F-Open Shooter.
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DaveMc
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#6 Postby DaveMc » Fri May 23, 2014 9:03 am

The initial reason for me trying the 180's was when the Bergers were in short supply and they do work quite well.

RRP of $105 a box for the Lapua!
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Norm
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#7 Postby Norm » Fri May 23, 2014 1:01 pm

OK I will give them a try.
The barrel does not shoot the Berger's at all now. Groups are five times larger than when I first developed the load. The throat has gone forward about 60 thou.
Just thinking that the Sierra's may handle the worn throat better than the Berger's and restore some sort of accuracy as the barrel has only done about 1200 rounds.

I will run off four or five different loads with the Sierra's and see if I can find a reasonable load. If not then it looks like I have a fire forming barrel.
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ratshot
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#8 Postby ratshot » Fri May 23, 2014 1:51 pm

Norm put your coin towards a new barrel... Paul.
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Quick
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#9 Postby Quick » Fri May 23, 2014 2:44 pm

1200rds and the barrel is cooked!!! And thats a 284. No wonder I dont wanna build one....
Shaun aka 'Quick'
Yanchep, Western Australia

308 Win F/TR & F-S
7mm F-Open Shooter.
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macguru
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#10 Postby macguru » Fri May 23, 2014 3:08 pm

Why not just rechamber the existing barrel ? Its probably just the throat thats worn ....
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RAVEN
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#11 Postby RAVEN » Fri May 23, 2014 4:23 pm

+ 1on that macguru
RB
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Cameron Mc
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#12 Postby Cameron Mc » Fri May 23, 2014 4:35 pm

My first Krieger got 4000 rds. I have retired it, but it was still accurate.

Cam
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RAVEN
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#13 Postby RAVEN » Fri May 23, 2014 5:10 pm

My first 284 Krieger has been re chambers 3 times and will still win OPM
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Norm
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#14 Postby Norm » Fri May 23, 2014 7:16 pm

macguru wrote:Why not just rechamber the existing barrel ? Its probably just the throat thats worn ....


Its 28" now so would end up being a bit on the short side. Still it might make a nice short range fire forming barrel for my 7-08ai if I rechamber it..
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Cameron Mc
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#15 Postby Cameron Mc » Fri May 23, 2014 8:15 pm

Norm wrote:
macguru wrote:Why not just rechamber the existing barrel ? Its probably just the throat thats worn ....


Its 28" now so would end up being a bit on the short side. Still it might make a nice short range fire forming barrel for my 7-08ai if I rechamber it..


Norm

The one I said did 4000rds ended up at 27". That barrel was competitive at 1000yds. My wife used it to shoot some great groups in the trials for the World Champs.

Cam
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