is a remington 700 sps 5.56 rated?

whitetailwoodsarcher

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hey guys i posted a thread about 222 rem or smaller. i decided to get the 223 because of the cheap ammo. i was woundering if the rifle was able to withstand the higher pressure that the 5.56 gives off?
thanks!
 
Withstand the higher pressure? What are you talking about? Can you explain your question further, as it does not make much sense.

As long as the rifle is chambered for a .223, a Remington SPS, or any other brand will not have any issues in terms of the "pressures" as long as you follow you handloading reference manuals or buy factory rounds. A 5.56 IS a military round (thicker case, and I'm told, loaded to higher pressures). The commercial rifles have .223 Remington. That is what they are designed to shoot. Don't mess around with this stuff.

When you passed your RPAL course, that was one of the important lessons they taught.

If you do happen to shoot the 5.56 ammo in your rifle, you may see immediate pressure signs, even to the point where the bolt may be stiff to open. There is plenty of cheap 223 ammo available on the market, buy the stuff by the brick load and have fun. Shoot what is stamped on the side of your rifle.
 
if you are asking if you can shoot 5.56x45 nato rounds through your 223. well i dont own either . they are similar they same case. i beileve the 5.56 has a longer throat for heavier bullets.. the 5.56 are loaded hotter. max pressure for the 223 is 55000 psi and the 5.56x45 is 62366psi. thats just my 2 cents i am not saying it is safe to shoot 5.56x45 ammo out of your sps just giving you the facts so you can make your own decision .
 
There is very little difference in pressure between the two cartridges. When tested using the exact same methods, both 5.56 NATO and .223 Rem will read around 62000 PSI using the NATO methods, or around 55000 PSI using SAAMI methods. Using a proper chamber, both rounds are completely interchangeable. As to whether or not the receiver is "rated" for 5.56, an identical receiver (save for it's length) and bolt head is used for the .338 LM cartidge, which produces around 60000 PSI on a .587 bolt face, resulting in over 16000 lbs of rearward thrust. To come close to that, you would have to load your .223/5.56 to about 147000 PSI. So yes, the receiver is "rated" for 5.56.
 
Six of one, half dozen of the other. Originally designed for the military and designated 5.56 MM NATO, then later produced for the civi-market as a .223Rem. Same cartridge, just loaded with specific bullets for NATO use.

Some surplus ammo tends to be run a bit hot, but nowhere near the cartridge's potential from a handload.

Not hard to find a corrupt storesman with a taste for black rum or Scotch. Shoot all day for the price of a bottle.
 
A similar issue to the 7.62x51 vs. .308 Winchester? Not trying to hijack the thread here, but, some real issues there with different case thicknesses as it affects loads/pressures if not compensated for when hand loading, and headspacing is always an issue. Is headspacing an issue with the 5.56 chambered rifles vs. the .223 chambers?
 
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