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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 Norma mag or 30 Nos
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<blockquote data-quote="Aoudad shooter1975" data-source="post: 1521065" data-attributes="member: 102560"><p> <ul> <li data-xf-list-type="ul">Bolt lug set back is caused when cartridges that generate too much pressure and bolt thrust cause the bolt lugs to form indentations into the lug recesses in the receiver. <br /> Bolt lug setback are shiny depressions in the face of the lug recesses that are typically pushed back most of the time .005 You need to remove the barrel to inspect this area of the receiver. <br /> Bolt lug set back causes excessive headspace in the rifle. The sidewalls of the cartridge case can stretch near the head area, and if reloaded could case a head separation.<br /> (copied from the net did not feel like writing it out--and think it answers your question)<br /> <br /> Well in my opinion more than the lugs, The other big issue is the case diameter in the tenon, and this may be more important than the other. It can easily cause over straining of the barrel which can over a short time cause tough extraction, especially with top end loads of a 300/338 Norma 338 Lapua That being said l shoot with a gent that has well over 1,000 rounds thru a Remington 700 Lapua with no issues--and my gunsmith as built 5-6 Norma's both of the 300 and 338 varieties with no issues I know about. He is not conserned with the safety. Jimmy Sloan that developed the round developed it to go into a standard 700 type. Platform...so I'm kind of divided.<br /> <br /> When I built my 300 Norma I had a Weatherby Mark V. I have had zero issues.. but it is a big, strong action</li> </ul></blockquote><p></p>
[QUOTE="Aoudad shooter1975, post: 1521065, member: 102560"] [LIST] [*]Bolt lug set back is caused when cartridges that generate too much pressure and bolt thrust cause the bolt lugs to form indentations into the lug recesses in the receiver. Bolt lug setback are shiny depressions in the face of the lug recesses that are typically pushed back most of the time .005 You need to remove the barrel to inspect this area of the receiver. Bolt lug set back causes excessive headspace in the rifle. The sidewalls of the cartridge case can stretch near the head area, and if reloaded could case a head separation. (copied from the net did not feel like writing it out--and think it answers your question) Well in my opinion more than the lugs, The other big issue is the case diameter in the tenon, and this may be more important than the other. It can easily cause over straining of the barrel which can over a short time cause tough extraction, especially with top end loads of a 300/338 Norma 338 Lapua That being said l shoot with a gent that has well over 1,000 rounds thru a Remington 700 Lapua with no issues--and my gunsmith as built 5-6 Norma's both of the 300 and 338 varieties with no issues I know about. He is not conserned with the safety. Jimmy Sloan that developed the round developed it to go into a standard 700 type. Platform...so I'm kind of divided. When I built my 300 Norma I had a Weatherby Mark V. I have had zero issues.. but it is a big, strong action [/LIST] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 Norma mag or 30 Nos
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