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180gn Sierra 7mm
Posted: Thu May 22, 2014 9:42 pm
by Norm
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.
Posted: Fri May 23, 2014 8:31 am
by DaveMc
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
Posted: Fri May 23, 2014 8:35 am
by Cameron Mc
Norm, I had a similar experience as Dave.
I guess the Berger marketing worked.
Cam
Posted: Fri May 23, 2014 8:53 am
by Brad Y
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!
Posted: Fri May 23, 2014 9:03 am
by Quick
Wheres the prices on the lapua 180gr?
Posted: Fri May 23, 2014 9:03 am
by DaveMc
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!
Posted: Fri May 23, 2014 1:01 pm
by Norm
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.
Posted: Fri May 23, 2014 1:51 pm
by ratshot
Norm put your coin towards a new barrel... Paul.
Posted: Fri May 23, 2014 2:44 pm
by Quick
1200rds and the barrel is cooked!!! And thats a 284. No wonder I dont wanna build one....
Posted: Fri May 23, 2014 3:08 pm
by macguru
Why not just rechamber the existing barrel ? Its probably just the throat thats worn ....
Posted: Fri May 23, 2014 4:23 pm
by RAVEN
+ 1on that macguru
RB
Posted: Fri May 23, 2014 4:35 pm
by Cameron Mc
My first Krieger got 4000 rds. I have retired it, but it was still accurate.
Cam
Posted: Fri May 23, 2014 5:10 pm
by RAVEN
My first 284 Krieger has been re chambers 3 times and will still win OPM
Posted: Fri May 23, 2014 7:16 pm
by Norm
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..
Posted: Fri May 23, 2014 8:15 pm
by Cameron Mc
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