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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Lapua Brass compared to 300 Remington Ultra Brass
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<blockquote data-quote="DANTEC" data-source="post: 23555" data-attributes="member: 685"><p>Without to say you can reload 4 times 5 times or more some important points to check </p><p></p><p>chamber drawing dimensions / chamber real dimension </p><p></p><p>on 338 LM factory chambering dims are a bit broad ( even if some shooter can say that on my rifle ..... ) yes but original drawing chamber is CIP ( european standrad proof house organisation ) and chambers are not target / BR chamber .</p><p></p><p>Headspace in 338 LM chamber is broad if you compare to the unfired case case so best is set headspace on GO gauge and not use the NO GO or even use a custom Gauge more shorter remenber that 338 LM is a military design cartridge so sma problem as in 308 WIN ( headspace go for 1.630 to 1.635 and case are under 1.628 ( around) to allaow chambering if you get a chamber with heaqspace at 1.635 ( in tolerance near max ) your case body increase of 0.007 inch at each firing and aftereach shots reload too ( full sizing ).</p><p></p><p>for example : I have visit the Sako factory and sako rifle chamber job in mass product not really BR chambering job but rifle are accurate even if chamber are not tight ( when I say tight this is not neck turning chamber that chamber with minimum gap between case and chamber wall to allaow factory round chambering ) .</p><p></p><p>Norma case are good but always softer ( brass quality than Lapua ) and you start to loose primer quicker than on Lapua case .</p><p></p><p>on 300 REM same problem chamber dim is a bit broad ( base diam ; neck and throat ) </p><p>REM brass are hard brass and I have often slpit neck ( on regular 7 REM MAG 300 WIN mag ... ) not shoot enought with regular 300 ULTRA but I always anneal the neck to improved case life with Rem brass .</p><p></p><p>good shooting</p><p></p><p>DAN TEC</p></blockquote><p></p>
[QUOTE="DANTEC, post: 23555, member: 685"] Without to say you can reload 4 times 5 times or more some important points to check chamber drawing dimensions / chamber real dimension on 338 LM factory chambering dims are a bit broad ( even if some shooter can say that on my rifle ..... ) yes but original drawing chamber is CIP ( european standrad proof house organisation ) and chambers are not target / BR chamber . Headspace in 338 LM chamber is broad if you compare to the unfired case case so best is set headspace on GO gauge and not use the NO GO or even use a custom Gauge more shorter remenber that 338 LM is a military design cartridge so sma problem as in 308 WIN ( headspace go for 1.630 to 1.635 and case are under 1.628 ( around) to allaow chambering if you get a chamber with heaqspace at 1.635 ( in tolerance near max ) your case body increase of 0.007 inch at each firing and aftereach shots reload too ( full sizing ). for example : I have visit the Sako factory and sako rifle chamber job in mass product not really BR chambering job but rifle are accurate even if chamber are not tight ( when I say tight this is not neck turning chamber that chamber with minimum gap between case and chamber wall to allaow factory round chambering ) . Norma case are good but always softer ( brass quality than Lapua ) and you start to loose primer quicker than on Lapua case . on 300 REM same problem chamber dim is a bit broad ( base diam ; neck and throat ) REM brass are hard brass and I have often slpit neck ( on regular 7 REM MAG 300 WIN mag ... ) not shoot enought with regular 300 ULTRA but I always anneal the neck to improved case life with Rem brass . good shooting DAN TEC [/QUOTE]
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338 Lapua Brass compared to 300 Remington Ultra Brass
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