Guys, I am preparing a ton of 243 and 308 once fired brass for reloading. I am doing a full length resizing, my question is the case length. The case length on most of this brass is within 10.000 of an inch of each other. Now I know that it is best to have every case the exact length but how important is it really? I have been told that if you have a cannalure they must be all the same length but what if the bullet does not have a cannalure? What if I decide not to crimp or use a roll crimp? I have over 1000 pieces of brass and I dread having to trim all these cases by hand.
Have at it guys I am all ears.
Thx for all the help.
are they longer than max length? 10 thou is really a good bit when your talking case length. the standard is to measure and trim them all to the same length as your shortest case.
RR
Location: S.W. Pa.-- Heart in North Central Pa. mountains-
Posts: 2,508
Quote:
Originally Posted by sauer06
Guys, I am preparing a ton of 243 and 308 once fired brass for reloading. I am doing a full length resizing, my question is the case length. The case length on most of this brass is within 10.000 of an inch of each other. Now I know that it is best to have every case the exact length but how important is it really? I have been told that if you have a cannalure they must be all the same length but what if the bullet does not have a cannalure? What if I decide not to crimp or use a roll crimp? I have over 1000 pieces of brass and I dread having to trim all these cases by hand.
Have at it guys I am all ears.
Thx for all the help.
.......Honestly, Doug, I would trim them all to the trim-to-length spec. I'm kinda anal about some of the "little" things, and I'm sure some will disagree with me. You need a base standard to start with. I then pick a "lot" size, maybe 25 or 30 casings, and shoot them all the same number of times until they're scrap. Then discard the entire lot. If accuracy and precision are your goal, uniformity is the key.....
.......As far as crimping goes, I see no need to crimp any bullet in a 243 or 308 case. The only crimping I ever do is on pistol rounds or heavy recoiling big boys like my .338 WinMag or 45/70....
Guys, thx for all the help, my problem is I have over 1000 cases, what I did was my Dad and myself went and bought a RCBS power case motor that fits our RCBS case trimmer and after some trial and error (my error mostly) the thing works great! I cannot believe how accurate and easy it is to use, I did have to go out and replace a clamp but other than that it is nuts on, I trim 10 cases and measure the last one and if it is on,and it is always on with this machine I go to the next 10. It works fine on nickle plated cases as well, can't say enough of good things about RCBS. I cannot say how many man hours of work that this thing will save but I know it will be alot
I don't know where this comes from but case length is not as important as some here make it out to be.....
Unless you're going to crimp the cases and there's very little reason to do so....but some folks do so anyway!!!.....the only requirement is to have the case length not exceed the maximum.
.010 variance is not a problem at all!!!!....as long as they are short enough!
Location: S.W. Pa.-- Heart in North Central Pa. mountains-
Posts: 2,508
Quote:
Originally Posted by Vapodog
I don't know where this comes from but case length is not as important as some here make it out to be.....
Unless you're going to crimp the cases and there's very little reason to do so....but some folks do so anyway!!!.....the only requirement is to have the case length not exceed the maximum.
.010 variance is not a problem at all!!!!....as long as they are short enough!
.......... A lot of people put a lot of stock in neck tension with the bullet. With a picked OAL and uneven lengthed cases, I don't think you can maintain that factor. Length of time in the neck at a given tension and point of tension is unreliable. Again, my advice is to trim. Period.
case length
