If my neck tension is to low will it cause a condition that keeps the brass from expanding and sealing the chamber thereby creating blow back. I noticed 2 out of 8 fired cases looks like they have burn marks down one side of the case in kind of an arc pattern.
currently using a bushing that results in the ID of the case being .002 less that the diameter of the bullet. Loading 6.5 x 284 with 140 grain berger VLD's.
Thanks for helping out us newbee's.
Greg
Low neck tension = lack of expansion and seal ???
- Promapper
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Low neck tension = lack of expansion and seal ???
Joe McCarthy (Republican senator from Wisconsin (1947–57) WAS RIGHT ! And no one listened. NOW LOOK WHAT WE GOT !
http://en.wikipedia.org/wiki/Joseph_McCarthy
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Re: Low neck tension = lack of expansion and seal ???
.002" of neck compression should be more than adequate. Sounds more like a light powder charge. The shoulder should be expanding to seal the chamber.
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Re: Low neck tension = lack of expansion and seal ???
And, it could also relate to how many times the brass had been fired. Work hardened brass won't expand and contract like softer brass. Same when resizing. You may think it's OK with the bushing you're using but you may be getting false readings.
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Re: Low neck tension = lack of expansion and seal ???
Not an expert here, but I concur with light powder charge, or incorrect type (too slow or fast or whatever...)
- Promapper
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Re: Low neck tension = lack of expansion and seal ???
reduced charge by 1 grain and the issue solved itself. Thanks fella's for your input as I can assure you I looked into them all,
Joe McCarthy (Republican senator from Wisconsin (1947–57) WAS RIGHT ! And no one listened. NOW LOOK WHAT WE GOT !
http://en.wikipedia.org/wiki/Joseph_McCarthy
http://en.wikipedia.org/wiki/Joseph_McCarthy