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338 Lapua

 
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  #1  
Old 02-05-2010, 08:59 PM
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338 Lapua

Anyone here build a 338 lapua improved on a 700 action? Just curious as to how it worked out, thats gotta be as much or too much for the 700 action, what do you all think?
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  #2  
Old 02-07-2010, 01:52 PM
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Re: 338 Lapua

Everything you need to know s in this thread: Rem 700 action how much chamber pressure is safe?
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  #3  
Old 02-07-2010, 02:04 PM
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Re: 338 Lapua

ZSteinle, keep in mind the attached post speaks to Remington 700 for 338 Lapua. Your going a step above that with the 338 Lapua Improved. Kirby Allen one of the most respected smiths won't build a 338 lapua on a Remington 700 action let alone a 338 Lapua Improved and I wouldn't either. Let us know what you decide and how it works out for you.
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  #4  
Old 02-07-2010, 05:14 PM
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Re: 338 Lapua

Let me respectfully add a bit to Chase1's comments. I have built Rem 700s into 338 Lapuas and its improved brother with no problems at all. I will not chamber a stainless steel M700 in any Lapua class chambering because the softer stainless steel will have more likelihood of having bolt lug set back issues.

The harder chrome moly steel does not have this problem when proper pressures are used in the Lapua. This brings us to the real reason I do not care to chamber the Rem 700s for the Lapua class chamberings.

The Lapua case will handle pressures far above what most if not all the other cases on the market will handle today. In fact, where a RUM case will start to loosen primer pockets at around 68,000 psi, the Lapua case simply similes and takes this pressure and even much more with ease.

This is where the problem comes in. If the 338 Lapua Improved is loaded to the correct 65 to 68,000 psi pressures, a chrome moly Rem 700 that is properly built should never have any problems. Its when a handloader tries to take the Lapua case to its limits like other case designs that they get into trouble because they are into pressure ranges far above what other case designs will handle but still not seeing any pressure signs at all.

Just to much of a liability issue in my professional opinion, that is why I stopped doing these conversions for customers......
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  #5  
Old 02-08-2010, 08:14 AM
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Re: 338 Lapua

Quote:
Originally Posted by Fiftydriver View Post
Let me respectfully add a bit to Chase1's comments. I have built Rem 700s into 338 Lapuas and its improved brother with no problems at all. I will not chamber a stainless steel M700 in any Lapua class chambering because the softer stainless steel will have more likelihood of having bolt lug set back issues.

The harder chrome moly steel does not have this problem when proper pressures are used in the Lapua. This brings us to the real reason I do not care to chamber the Rem 700s for the Lapua class chamberings.

The Lapua case will handle pressures far above what most if not all the other cases on the market will handle today. In fact, where a RUM case will start to loosen primer pockets at around 68,000 psi, the Lapua case simply similes and takes this pressure and even much more with ease.

This is where the problem comes in. If the 338 Lapua Improved is loaded to the correct 65 to 68,000 psi pressures, a chrome moly Rem 700 that is properly built should never have any problems. Its when a handloader tries to take the Lapua case to its limits like other case designs that they get into trouble because they are into pressure ranges far above what other case designs will handle but still not seeing any pressure signs at all.

Just to much of a liability issue in my professional opinion, that is why I stopped doing these conversions for customers......

+1 Very well said
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  #6  
Old 02-15-2010, 11:52 PM
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Re: 338 Lapua

I deeply respect your professional opinion. At the same time I am invested in gathering the parts and pieces for the .338 Lapua Improved. Of course a .338 Edge would have been the solution or even a RUM. In the beginning I actually considered that and made the decision to do the Lapua Improved, looking at the pressures of the parent cartridges. The last thing I want to do is grenade my pride and joy!

Let's assume I get the rifle assembled. How do I NOT do what you fear someone will do?

Quote:
Originally Posted by Fiftydriver View Post
Let me respectfully add a bit to Chase1's comments. I have built Rem 700s into 338 Lapuas and its improved brother with no problems at all. I will not chamber a stainless steel M700 in any Lapua class chambering because the softer stainless steel will have more likelihood of having bolt lug set back issues.

The harder chrome moly steel does not have this problem when proper pressures are used in the Lapua. This brings us to the real reason I do not care to chamber the Rem 700s for the Lapua class chamberings.

The Lapua case will handle pressures far above what most if not all the other cases on the market will handle today. In fact, where a RUM case will start to loosen primer pockets at around 68,000 psi, the Lapua case simply similes and takes this pressure and even much more with ease.

This is where the problem comes in. If the 338 Lapua Improved is loaded to the correct 65 to 68,000 psi pressures, a chrome moly Rem 700 that is properly built should never have any problems. Its when a handloader tries to take the Lapua case to its limits like other case designs that they get into trouble because they are into pressure ranges far above what other case designs will handle but still not seeing any pressure signs at all.

Just to much of a liability issue in my professional opinion, that is why I stopped doing these conversions for customers......
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  #7  
Old 02-16-2010, 12:46 AM
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Posts: 34
Re: 338 Lapua

For one thing I would replace the bolt with one made by PTG that is set up for the Lapua size case with M-16 extractor I just built a 7/338 Norma Imp. with the PTG bolt and it works great.

Ken
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