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Posted: 12/28/2004 7:18:24 AM EDT
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This past weekend I was out shooting my 6.5x55 mauser when at the end of a rapid fire string on some metallic gongs I had a single round produce a lot of acrid blue smoke that pushed up through the action. Extracted the case and noticed a lot of carbon from the mouth to the rim as well as lots of carbon along the bolt and bolt face. I did not immediately notice any crack(s) on the brass. I looked at my other ejected brass and noticed some carbon streaking on an occasional piece that extended maybe a quarter inch from the mouth towards the base. I am not sure what is going on. I can tell you that these are my reloads using Federal and Winchester brass, Sierra 120 Match kings, CCI 200, and IMR 4064. The brass has been neck-resized 5 times with enough shoulder contact in the chamber that there is resistance to the bolt closing. I have heard that the Swedish mauser may have had an over-sized chamber for reliable field use (maybe just an internet rumor ). I have been shooting this Carl Gustafs 1906 for almost ten years and never had this problem before. Thanks for any advice, Karl |
| it sounds like you goofed on the powder charge on that last round. that would not build the presure to expand the case enough to make the seal and you have soot the length of the case and into the action. i would focus and load up a few more rounds . i don't think you will have any problem. |
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I did not consider that the cases may be undercharged. But it does make sense that I need enough pressure to seal the case into the chamber. I do plan on using 140 gr bullets and IMR 4350 for further development. The longer bullet (compared to 120) will give more neck tension and the slower powder should work better in the 29" bbl. Thanks fellas! |
+1 I had a guy with lots of experience reloading for mil surp rifles tell me that if there was soot on the neck, and the primer edges were still round, you weren't loaded hot enough. When working up loads without a chrono it sure seems to work. |
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