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Posted: 6/6/2010 11:32:58 AM EDT
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i am knocking primers and sizing some .308 i found, the win, fc stuff sizes fine when checking with my dillon guage. the lc 07 brass drops good before i size it.
then when i size it it the bottom of the case sticks up almost an 1/8th of an inch. so looking at it closer the expander fits really tight in the neck/mouth of the case, could the tight fit be pushing the shoulder back thus making it not fit good in my guage? i took the decapping rod out entirely of my die and ran the lc brass up and back full length and it was fine. this is the conclusion i have come to i am open to suggestions. |
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The Lake City brass is thicker than the commercial type. That means the neck expander is applying much more pressure when it gets pulled through the neck. This can cause the problems you've encountered.
Lake City is also much much tougher than commercial brass. I have to resize it seperately with the die screwed down a little more to get the sizing I need. Having been fired from US military rifles the first time around, much of it gets stretched further on that first firing than it will ever see from a tightly headspaced home owned firearm. Machine guns get used with a lot of this brass and they beat the crap out of it. As long as you have the gages you will get the job done right. I wish everyone used them, they stop the guess work altogether. |
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Quoted:
alright, so lube the crap out of the inside of the neck, screwdown the expander or the other part of the die (the name escapes me) ? Just use a lube other than Hornady One Shot for inside the necks. Eventually you should switch to something other than HOS for the outside of the cases unless you just ditch it now. I have two cans in my garage that haven't been touched since I started reloading. What borderpatrol was mentioning is that he screws the whole die down more for LC 762 brass than commercial 308 brass. I also noticed that LC does not size down as easily as commercial brass but since most people oversize even with a case guage, it isn't usually an issue. The brass is just harder and springs back so it needs alittle extra lube and possible shoulder bump. Try just the lube first. Don't ditch the LC as alot of people prefer it over commercial brass, myself included. If it is truly once fired and you want to trade, I have plenty of once fired FC brass picked up from the range that I am willing to part with. 
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