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Rifles, Reloading, Optics, Equipment
Specialty Handgun Hunting
APS Big Boy!
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<blockquote data-quote="Fiftydriver" data-source="post: 334405" data-attributes="member: 10"><p>There have been many talking about the strength of the XP which really suprises me. The XP-100 was designed many years after Remington had their rifle bolt actions on the market and are made to very similiar specs as far as the bolt head and bolt lug supports in the receiver.</p><p> </p><p>If you look at a Rem 700 rifle receiver, the weak link in this receiver is the bottom bolt lug support because there is relatively little steel supporting this bottom bolt lug because of the mag box window cut out.</p><p> </p><p>In the XP-100, there is nothing but solid steel supporting both the bolt lugs. The bolt lugs are of the same size as the full size Rem 700 and I have found no weakness in the Chrome Moly Rem 700 for chambering the Lapua class chamberings in this receiver.</p><p> </p><p>I do have a problem with the Stainless Steel M700s being chambered in the Lapua class chamberings because the bolt lug supports are stainless steel and much softer then the Chrome Moly receivers. As such, you have a higher likelyhood that you will get some set back with the stainless receivers.</p><p> </p><p>To be honest, if you load the Lapua to its proper levels, both receivers would handle this fine, its when some start to push the Lapua case to its limits that you get into trouble and will with any receiver because of the extreme strength of the Lapua case.</p><p> </p><p>You can not load the Lapua up to where the primer pockets just start to loosen and consider that a max working load as you will be WAY over pressure for any factory receiver, well, any receiver at all to be honest.</p><p> </p><p>If your concerned about pressures, do load development with Norma 338 Lapua cases which are similiar in strength and hardness to Remington RUM cases and their primer pockets will show pressure signs MUCH sooner then the Lapua case. Then once you have your load data worked out you can go over to the stronger Lapua cases and use them for your loads.</p><p> </p><p>Simply put, the XP-100 is a stronger receiver then the 700 for sure and if loaded correctly, they will easily handle any wildcat based on the Lapua case.</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 334405, member: 10"] There have been many talking about the strength of the XP which really suprises me. The XP-100 was designed many years after Remington had their rifle bolt actions on the market and are made to very similiar specs as far as the bolt head and bolt lug supports in the receiver. If you look at a Rem 700 rifle receiver, the weak link in this receiver is the bottom bolt lug support because there is relatively little steel supporting this bottom bolt lug because of the mag box window cut out. In the XP-100, there is nothing but solid steel supporting both the bolt lugs. The bolt lugs are of the same size as the full size Rem 700 and I have found no weakness in the Chrome Moly Rem 700 for chambering the Lapua class chamberings in this receiver. I do have a problem with the Stainless Steel M700s being chambered in the Lapua class chamberings because the bolt lug supports are stainless steel and much softer then the Chrome Moly receivers. As such, you have a higher likelyhood that you will get some set back with the stainless receivers. To be honest, if you load the Lapua to its proper levels, both receivers would handle this fine, its when some start to push the Lapua case to its limits that you get into trouble and will with any receiver because of the extreme strength of the Lapua case. You can not load the Lapua up to where the primer pockets just start to loosen and consider that a max working load as you will be WAY over pressure for any factory receiver, well, any receiver at all to be honest. If your concerned about pressures, do load development with Norma 338 Lapua cases which are similiar in strength and hardness to Remington RUM cases and their primer pockets will show pressure signs MUCH sooner then the Lapua case. Then once you have your load data worked out you can go over to the stronger Lapua cases and use them for your loads. Simply put, the XP-100 is a stronger receiver then the 700 for sure and if loaded correctly, they will easily handle any wildcat based on the Lapua case. [/QUOTE]
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