It's a 50/50 thing. The short of the answer is --No you should not. The long is.
I have 4 buddy's in the Guard. They have been shooting military rounds out of there Remmy's for 4 years now and never a issue. There is a increase in pressure,but not enough to damage your rifle. So take it as it is and make your choice. Myself- I would not do it as 223 ammo is cheap and until a while ago was very easy to get or reload.
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