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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New .338 lanches a 300gr Sierra MK at 3500fps?
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<blockquote data-quote="Steve Shelp" data-source="post: 21912" data-attributes="member: 22"><p><strong>Can you buy the 416 Rigby brass from someone other than Norma?</strong></p><p>Bell Labs might make the Rigby brass, but I'm not sure. I'm not aware of any others, besides Norma though. A couple of close friends bought some 404 Jefferies brass from Bell when RWS quite making the 404 stuff. All reports I heard was that it was absolute junk for any type of accuracy work. Wall thickness variations was several thousands of an inch. Guess you don't need much better for use in a double rifle to stop an elephant at 50yds though. So you can't blame them I guess.</p><p></p><p><strong>What I'm really wondering is which case is of a stronger desighn and by what MFG?</strong></p><p>Well for all out case capacity yes the Weatherby or the Rigby is going to have more room over the 338 Lapua as you already stated. But both brands are made by Norma so you have the softness issue to deal with. With the 378 brass you have the belt issue to deal with also. So based on this I would go with the Rigby over the Weatherby. </p><p></p><p><em>Wonder if Darryl could give us an idea of how many loadings he gets on his cases using his standard hunting load that doesn't wreck the cases in 2 firings.?</em></p><p></p><p>If whatever number he gives is suitable for you then go with the Rigby and have some fun.</p><p></p><p><strong>Which case would you use?</strong></p><p>Me personally... I would go with the tough 338 Lapua case improved more than what I have (there's room!!) in a long barrel and 3200fps should be easily obtainable. I know of a rifle with the same exact chamber I have (cut with the same reamer) and used 96gr of R25 without pressure and got 3165fps in a 45" barrel. I've used that same 96gr load in mine and got 2925fps average in a 32" barrel. I believe this barrel may be too long for this setup. maybe?? If you went with a 38-42" barrel using the slow burning powders you should easily end up over 3200fps. If not you could always use the R25 about stay jsut shy of 3200fps. That 86gr load of r25 i nthat rifle was shooting consistant 8" 10 shot group in competition and that was without a whole lot of load workup. </p><p> You can't beat the toughness of the Lapua brass. My 338 Lapua brass also holds approx 1.5gr more water internally than my 338 Lapua Norma brand brass also. I've got up to 17 loading on a couple batches of cases in my 338 using Lapua brass. And some of it was shot in hot southern July/Aug weather when the bolt got sticky on opening. But I haven't lost a Lapua case from a loose primer pocket yet. Only 2 or 3 neck/shoulders cracking out of the original 100 cases. 3200fps with that 300gr bullet is very good! are you going to be able to match the 338/416 Imp 1 for 1... no. So I guess the question to ask, is that extra 100fps that is possible in the Rigby case really critical to you and your intended application? If yes then its the Rigby, if not then the Lapua would be my choice. IMO. </p><p></p><p><strong>I know Lapua redesighned the Rigby case for added strength BUT, they shortened it too. I wish I could get the same speed from the Lapua brass, it is the quality I'm really looking for. I'm just afraid I would be pushing the PSI higher than I want to to get the velocity, been there done that and only found accuracy with one gun that way.</strong></p><p>see my comments above. that 96gr laod of R25 at 3165fps was a safe repeatable load in that rifle. Yes I've seen that to many times of someone trying to make a rock bleed and it doesn't work. But in this case I think you can come very very close to the intended velocity with good accuracy based on the above info.</p><p> </p><p><strong>Maybe I'm being a little to technical but this won't be cheap and I don't want to do it twice if I don't have to.</strong></p><p>I'll roger that. I've given all the facts I know, and some personal opinion above. Have fun selecting your new toy. That's part of the fun. </p><p></p><p>your welcome. Let me know what your thinking in return.</p><p></p><p>Steve</p></blockquote><p></p>
[QUOTE="Steve Shelp, post: 21912, member: 22"] [B]Can you buy the 416 Rigby brass from someone other than Norma?[/B] Bell Labs might make the Rigby brass, but I'm not sure. I'm not aware of any others, besides Norma though. A couple of close friends bought some 404 Jefferies brass from Bell when RWS quite making the 404 stuff. All reports I heard was that it was absolute junk for any type of accuracy work. Wall thickness variations was several thousands of an inch. Guess you don't need much better for use in a double rifle to stop an elephant at 50yds though. So you can't blame them I guess. [B]What I'm really wondering is which case is of a stronger desighn and by what MFG?[/B] Well for all out case capacity yes the Weatherby or the Rigby is going to have more room over the 338 Lapua as you already stated. But both brands are made by Norma so you have the softness issue to deal with. With the 378 brass you have the belt issue to deal with also. So based on this I would go with the Rigby over the Weatherby. [I]Wonder if Darryl could give us an idea of how many loadings he gets on his cases using his standard hunting load that doesn't wreck the cases in 2 firings.?[/I] If whatever number he gives is suitable for you then go with the Rigby and have some fun. [B]Which case would you use?[/B] Me personally... I would go with the tough 338 Lapua case improved more than what I have (there's room!!) in a long barrel and 3200fps should be easily obtainable. I know of a rifle with the same exact chamber I have (cut with the same reamer) and used 96gr of R25 without pressure and got 3165fps in a 45" barrel. I've used that same 96gr load in mine and got 2925fps average in a 32" barrel. I believe this barrel may be too long for this setup. maybe?? If you went with a 38-42" barrel using the slow burning powders you should easily end up over 3200fps. If not you could always use the R25 about stay jsut shy of 3200fps. That 86gr load of r25 i nthat rifle was shooting consistant 8" 10 shot group in competition and that was without a whole lot of load workup. You can't beat the toughness of the Lapua brass. My 338 Lapua brass also holds approx 1.5gr more water internally than my 338 Lapua Norma brand brass also. I've got up to 17 loading on a couple batches of cases in my 338 using Lapua brass. And some of it was shot in hot southern July/Aug weather when the bolt got sticky on opening. But I haven't lost a Lapua case from a loose primer pocket yet. Only 2 or 3 neck/shoulders cracking out of the original 100 cases. 3200fps with that 300gr bullet is very good! are you going to be able to match the 338/416 Imp 1 for 1... no. So I guess the question to ask, is that extra 100fps that is possible in the Rigby case really critical to you and your intended application? If yes then its the Rigby, if not then the Lapua would be my choice. IMO. [B]I know Lapua redesighned the Rigby case for added strength BUT, they shortened it too. I wish I could get the same speed from the Lapua brass, it is the quality I'm really looking for. I'm just afraid I would be pushing the PSI higher than I want to to get the velocity, been there done that and only found accuracy with one gun that way.[/B] see my comments above. that 96gr laod of R25 at 3165fps was a safe repeatable load in that rifle. Yes I've seen that to many times of someone trying to make a rock bleed and it doesn't work. But in this case I think you can come very very close to the intended velocity with good accuracy based on the above info. [B]Maybe I'm being a little to technical but this won't be cheap and I don't want to do it twice if I don't have to.[/B] I'll roger that. I've given all the facts I know, and some personal opinion above. Have fun selecting your new toy. That's part of the fun. your welcome. Let me know what your thinking in return. Steve [/QUOTE]
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New .338 lanches a 300gr Sierra MK at 3500fps?
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