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Posted: 6/15/2005 3:01:00 PM EDT
| I was shooting some wolf polymer the other day through my RRA. The rifle has a midlength upper with stainless barrel, 1/8 and wylde chamber. I stopped shooting part way through a magazine and tried to pull the round out of the chamber. It was jammed, and I had to pull back with all my strength on the charging handle. I didn't think too much of it until the same thing happened again a little while later. This time I had to slam the butt down while pulling on the charging handle. I looked at the cartridge, and there were obvious scuff marks around the bullet where it had engaged the rifling. It had been jammed in, with no headspace available. I did not immediately think to pick up some spent cases to look for signs of over pressure, but now I am worried about shooting any more. Has anyone else run into this? |
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Juslearnin wrote a week ago: "I looked at the cartridge, and there were obvious scuff marks around the bullet where it had engaged the rifling." Juslearnin, this is kinda weird. The Wylde chamber in the RRA should give you plenty of length wrt Over All Length (OAL). It has a longer throat than true .223 but shorter than milspec 5.56 to improve accuracy. There still should be plenty of room between the bullet ogive's contact and the rifling though. It is hard to visualize any round being long enough to strike the rifling but short enough to fit into a magazine unless there's a problem with chamber length. The only way the bullet should show rifling marks is if it were too long to start (but wouldn't fit into mag), somehow moved in the case (possible), or the chamber throat were really short, as in true .223 or shorter (would suggest a problem other than the Wylde chamber). Are you sure the marks aren't from the feed ramps? The numbers don't add up for me. Once you figure this out will you let the rest of know what you find? Regards, Rick |
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