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7mm-338 lapua imp

 
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  #1  
Old 02-14-2010, 10:31 PM
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7mm-338 lapua imp

Im building a 7-338 lapua imp. I need to have ptg build a reamer. Does anyone have a fired brass or a drawing? PTG has a 338 lapua imp on file can get them to change the neck for me but im going to shoot the 175 smk so I would like to have a brass to set a bullet in for the reamer. Any help
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  #2  
Old 02-14-2010, 10:36 PM
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Re: 7mm-338 lapua imp

Why do you want to shoot the 175smk? Sounds like a sweet cartridge but that bullet's bc will really hurt performance. But your cartrdge. Just sharing my thoughts.

Isn't this basicly a 7 AM? I know the 7 AM is a 7-338 Lapua imp variant. Maybe talk to Kirby rather than pay for another custom reamer?

Oliver
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Old 02-15-2010, 07:53 AM
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Re: 7mm-338 lapua imp

Kirby is 8-9 months out on work. The 180 bergers dont like it over 3200-3300. Any other ideals?
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Old 02-15-2010, 09:24 AM
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Re: 7mm-338 lapua imp

I'm in the process of building the same caliber now. Planning on shooting 200gr wildcats....Anything else would be uncivalized!

I'm changing shoulder angle, body taper and bumping the shoulder a bit.
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Old 02-15-2010, 09:29 AM
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Re: 7mm-338 lapua imp

Quote:
Originally Posted by joe30007 View Post
Kirby is 8-9 months out on work. The 180 bergers dont like it over 3200-3300. Any other ideals?
Wait for Kirby. Shoot 200g Wildcats.
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  #6  
Old 02-15-2010, 09:47 AM
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Re: 7mm-338 lapua imp

Good points. Ddnt know irony was that far out on work.

Just ran it and at 1000yarfs a 175smk at 3400 vs a 180 Berger at 3200 the Berger has just a quater minute less drift at 1000. Once your past 1k it makes more of a difference however.

I think you don't have too many bullets to choose from, that can handle that much speed. Maybe some boutique bullets like the JLKs or such. Or some GS solids, if they are legal to hunt with where you live/hunt.
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  #7  
Old 02-15-2010, 10:08 AM
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Re: 7mm-338 lapua imp

I have never had a problem with the 180 bergers at 3200fps which is about max for a straight 7mm/338LM I built mine to shoot the 200gr wildcats but I have not got around to ordering any and other projects have taken precedence.
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