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Rifles, Reloading, Optics, Equipment
Gunsmithing
Gunsmith near Cortez, CO? need 5.56 NATO reamer
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<blockquote data-quote="Trickymissfit" data-source="post: 872328" data-attributes="member: 25383"><p>It's many years ago, but Rifle magazine did a really good article on shooting the 5.56 and the .223 at 1000 yards. They had chamber drawings, and the only real difference between the two chambers is in the throat. The NATO round is also loaded at a higher pressure spec. Blackhills loads a lot of the military stuff these days, and they have said they load it to 58K PSI. I think the actual milspec pressure max is 60K psi. None of these pressures are an issue in a .223 chamber, but there is an issue with the throat. It's going to make that 58K psi pressure spike up a little bit for a microsecond. How much I don't know, but would expect to see 63K psi. I've shot a little bit of 5.56 in my Remington, and had zero issues (Blackhills 55 grain). Add to this the fact that the rifle probably has a factory .223 chamber, and many of them have long throats anyway. My Remington has a minimum spec .223 N.M., and if it will shoot them a Savage will as well</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 872328, member: 25383"] It's many years ago, but Rifle magazine did a really good article on shooting the 5.56 and the .223 at 1000 yards. They had chamber drawings, and the only real difference between the two chambers is in the throat. The NATO round is also loaded at a higher pressure spec. Blackhills loads a lot of the military stuff these days, and they have said they load it to 58K PSI. I think the actual milspec pressure max is 60K psi. None of these pressures are an issue in a .223 chamber, but there is an issue with the throat. It's going to make that 58K psi pressure spike up a little bit for a microsecond. How much I don't know, but would expect to see 63K psi. I've shot a little bit of 5.56 in my Remington, and had zero issues (Blackhills 55 grain). Add to this the fact that the rifle probably has a factory .223 chamber, and many of them have long throats anyway. My Remington has a minimum spec .223 N.M., and if it will shoot them a Savage will as well gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Gunsmith near Cortez, CO? need 5.56 NATO reamer
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