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Posted: 4/28/2008 1:56:28 PM EDT
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OK. I've never bought 223 ammo, I've only just ordered an AR-15 today. (Expecting SHTF) Am I correct to assume that all .223 FMJ bullets are cannelured? And, sorry for the newbie question. Thanks. |
| The cannelure is there to facilitate a good crimping of the case mouth to the bullet. Most hunting bullets don't have a cannelure. I'll bet the match bullets used in many of the "heavy" loads recommended by a lot of folks these days don't have canalures either. Not sure if those heavy match bullets are FMJ's or HPs. |
You'd lose that bet.  Mk262 uses a 77gr SMK with a cannelure. TAP (both .223 and 5.56 loads) uses a 75gr BTHP with cannelure. Most 55gr or 62 gr FMJ ammo has a cannelure, but some dont... Wolf does not have a cannelure. |
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Damn. I was looking at new, Federal ammo on stippers at Sportsman's Guide What do you think? Again, I don't know 223 but this looks maybe to be XM193. |
I thought that I remembered reading on Ammo Oracle that the cannelure facilitated fragmentation, and that without it the FMJ in 223 is much less effective. |
| The cannelure may facilitate fragmentation, but it's main job is to secure the core within the jacket and make it easier to crimp the case mouth into the bullet. But with collet-type crimping dies (Lee calls them "Factory Crimp Dies" for a reason) the cannelure is not needed. I've seen GI ammo with and without cannelures on the bullets... |
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