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The Basics, Starting Out
Action for .338 Lapua
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<blockquote data-quote="Steve Shelp" data-source="post: 52371" data-attributes="member: 22"><p>As in any engineered "gadget" there is always a margin of safey built into it. The question is not whether a Rem 700/338 Lapua combo will shoot or not, but how much of that margin of safety you want to eat up in pushing the envelope?</p><p> I personally know Dave Tooley and Jim Bordon both. I don't beleive neither say if you do it, that this combo is going to blow up on the first shot. Obviously there are rifles out there that are working. Even though I'm putting words in thier mouths, I believe what they are saying is that it's too marginal in case something does go wrong and you cross "the line". How much of the "safety margin" do you have left so that you will be able to shoot another day is the point?</p><p></p><p>Also what about the long term affects of setting back the lugs and extra case stretch from lack of support? Jim Bordon documented this in an article several years ago with the Winchester action's 1" tenon thread diameter when using (I think??) 404 case heads. Remington tenon threads are bigger than the Winchester. But the Lapua/Rigby case head is about .040" to .045" larger then the Jefferies case also. So the differencees somewhat offset each other. </p><p></p><p><strong>The "three rings of steel" is a bunch of crap. Mausers and a bunch of other actions don't have it.</strong></p><p>I 100% disagree with this statement. The "three rings of steel" don't nessaccarily make the Remington action stronger to handle more PSI. Every action has 2 rings of steel. That's a given. The third ring on the Remington is made to upset during a case head failure and seal the gases from coming backward inside the couterbore of the barrel itself. </p><p> The brass case is the weakest link in the firing system. So if you take the first ring from the bolt face and make it so thin that gas will just blow right through it upon a massive case head failure you just took one of the most important safety aspects of the Remington action out of the equation. Remember to wear your safety glasses.</p><p> The sealing capability of the first ring of steel has been documented many times with some amazing stories. Love'um or hate'um... Remington actions are good from a safety point of view. Interesting enough it was this design and lack the ability of opening up the bolt face anymore to maintain the internal extractor on the bolt face that lead Remington to rebate the 404 J case head and come out with the Ultra Mag case. But in order to do this on the Remington action with a std 404 J case head diameter, you have to install a Sako extractor and break the first ring of steel. So it saved Remington money from redesigning or modifying existing actions and they kept this safety aspect in tact by using the rebated head and still used the larger case head diameter for more horsepower.</p><p></p><p>Steve</p></blockquote><p></p>
[QUOTE="Steve Shelp, post: 52371, member: 22"] As in any engineered "gadget" there is always a margin of safey built into it. The question is not whether a Rem 700/338 Lapua combo will shoot or not, but how much of that margin of safety you want to eat up in pushing the envelope? I personally know Dave Tooley and Jim Bordon both. I don't beleive neither say if you do it, that this combo is going to blow up on the first shot. Obviously there are rifles out there that are working. Even though I'm putting words in thier mouths, I believe what they are saying is that it's too marginal in case something does go wrong and you cross "the line". How much of the "safety margin" do you have left so that you will be able to shoot another day is the point? Also what about the long term affects of setting back the lugs and extra case stretch from lack of support? Jim Bordon documented this in an article several years ago with the Winchester action's 1" tenon thread diameter when using (I think??) 404 case heads. Remington tenon threads are bigger than the Winchester. But the Lapua/Rigby case head is about .040" to .045" larger then the Jefferies case also. So the differencees somewhat offset each other. [B]The "three rings of steel" is a bunch of crap. Mausers and a bunch of other actions don't have it.[/B] I 100% disagree with this statement. The "three rings of steel" don't nessaccarily make the Remington action stronger to handle more PSI. Every action has 2 rings of steel. That's a given. The third ring on the Remington is made to upset during a case head failure and seal the gases from coming backward inside the couterbore of the barrel itself. The brass case is the weakest link in the firing system. So if you take the first ring from the bolt face and make it so thin that gas will just blow right through it upon a massive case head failure you just took one of the most important safety aspects of the Remington action out of the equation. Remember to wear your safety glasses. The sealing capability of the first ring of steel has been documented many times with some amazing stories. Love'um or hate'um... Remington actions are good from a safety point of view. Interesting enough it was this design and lack the ability of opening up the bolt face anymore to maintain the internal extractor on the bolt face that lead Remington to rebate the 404 J case head and come out with the Ultra Mag case. But in order to do this on the Remington action with a std 404 J case head diameter, you have to install a Sako extractor and break the first ring of steel. So it saved Remington money from redesigning or modifying existing actions and they kept this safety aspect in tact by using the rebated head and still used the larger case head diameter for more horsepower. Steve [/QUOTE]
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The Basics, Starting Out
Action for .338 Lapua
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