Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

case trimming?

Discussion in 'Handloading and Reloading' started by saskboy, Nov 10, 2008.

Thread Status:
Not open for further replies.
  1. saskboy

    saskboy Member

    Joined:
    Oct 15, 2008
    Messages:
    130
    I trim my cases with the lee trim stud and cutter everytime I reload a case, is it necessary to do this everytime? As long as its under the max case length in a reloading book it should be fine right?
     
  2. agd1953

    agd1953 Member

    Joined:
    Jan 5, 2007
    Messages:
    213
    Location:
    Roy, Utah
    most reloading manuals have a trim to length listed, as long as you are at or below this length you should be fine. :)
     
  3. Walkalong

    Walkalong Moderator

    Joined:
    Nov 20, 2006
    Messages:
    46,718
    Location:
    Alabama
    I never trim auto cases for pistols. I trim revolver cases once to begin with, and not again, usually.

    Rifle brass must be trimmed when it gets too long.

    Absolutely
     
  4. PotatoJudge

    PotatoJudge Member

    Joined:
    Nov 17, 2005
    Messages:
    1,332
    Location:
    Texas
    I trim rifle brass for safety (and yes, as long as you're under max you should be fine) and pistol brass for consistent crimps. Trimming is not one of my favorite steps (especially for pistols) but the load consistency is worth it.
     
  5. possum

    possum Member

    Joined:
    Oct 12, 2005
    Messages:
    8,942
    Location:
    Concord, N.C.
    i don't trim cases for my .40s&w reloads.
     
  6. The Bushmaster

    The Bushmaster Member

    Joined:
    Jan 29, 2005
    Messages:
    7,849
    Location:
    Ava, Missouri
    Walkalong says I'm anal about this, but I trim all my brass to insure consitancy. Well...Not all. I don't trim 9mm X 19...:D
     
  7. SASS#23149

    SASS#23149 Member

    Joined:
    Jan 1, 2003
    Messages:
    1,855
    Location:
    Washougal,Wa
    you are sizing the cases 1st,right?
    If they are within spec then there is no reason to trim them.
     
  8. Hairballusmaximus

    Hairballusmaximus Member

    Joined:
    Nov 4, 2008
    Messages:
    85
    Location:
    Red Bluff, northern Ca.
    Bottle neck cases "grow" more than straight wall cases and will require trimming more often. I have trimmed .223 cases and set my seating die accordingly, but had to readjust it while still within the specs to keep crimp in the groove/cannelure. So even when within proper specs trimming or die adjustment may be necessary.
     
  9. The Bushmaster

    The Bushmaster Member

    Joined:
    Jan 29, 2005
    Messages:
    7,849
    Location:
    Ava, Missouri
    Hairballusmaximus (too long)...That's why I trim all my cases (except 9mm X 19) I rarely trim to minimum length, but to somwhere in the middle. It insures that I get a uniform crimp on all cases of that particular set of 50 or 20 depending as to whether they are handgun or rifle. I keep the trim length to within +/-.002". .45 ACP I trim to .890 +/- .002" mainly because my Colt 1911 seems to prefer that length. Could just be me, but...It also means I don't have to keep adjusting my crimp dies to allow for short or long cases within a set...
     
  10. Hairballusmaximus

    Hairballusmaximus Member

    Joined:
    Nov 4, 2008
    Messages:
    85
    Location:
    Red Bluff, northern Ca.
    Bushmaster, Hairball works just fine too. Do you find that the cases grow less when not trimmed to the minimum, like what you do, trim somewhere in the middle?
     
  11. The Bushmaster

    The Bushmaster Member

    Joined:
    Jan 29, 2005
    Messages:
    7,849
    Location:
    Ava, Missouri
    No...They grow just as much just as fast. I determined that it wasn't necessary to always trim them to minimum as long as they were all the same length +/- .002. I actually prefer them to be at or near maximum length. It just insures that the crimp will be uniform on all finished cartridges...Most often, with my RCBS Case Trimmer 2, I can keep them within +/- .001...

    O K...Hairball it is...Bushy here...:D
     
  12. Floppy_D

    Floppy_D Member In Memoriam

    Joined:
    Jul 4, 2007
    Messages:
    2,156
    Location:
    NAS Pensacola
    I trim uniformly to the minimum, because I get a visual distance from cannelure to case. It's another "check."

    Pistol brass? I have 40sw brass on it's 14th or so load, and I won't trim a single piece of it.
     
  13. Idano

    Idano Member

    Joined:
    Oct 2, 2006
    Messages:
    933
    Bushmaster and Hairballusmaximus.

    You can save yourself a lot of trimming (rifle) if you would give RCBS X-Dies a try. I started using X-Dies for 223 and I am slowly replacing all my sizer dies with and X-Die. The X-Die eliminates the need to keep trimming and IMO the life of the brass is greatly extended since it isn't stretched when the mandrel is removed.
     
  14. .38 Special

    .38 Special Member

    Joined:
    Sep 15, 2006
    Messages:
    2,303
    Location:
    Orange County, CA.
    I measure a sample from each lot of cases after firing. I almost never find enough growth to merit trimming. It's gotten to the point that with many cases -- lightly loaded revolver cases in particular -- I don't even measure anymore.
     
  15. 1858rem

    1858rem Member

    Joined:
    Aug 19, 2008
    Messages:
    1,235
    Location:
    in the sticks of nc
    i was gonna trim all my cases even, but they weren't long enough for the lee .45 colt case trimmer to trim anything yet
     
  16. The Bushmaster

    The Bushmaster Member

    Joined:
    Jan 29, 2005
    Messages:
    7,849
    Location:
    Ava, Missouri
    I've thought about that, Idano. I have to full length size my .30 WCF cases and the only other rifle I reload for is a .30-06. Haven't desided if it's worth it or not yet. But thanks anyway
     
  17. Walkalong

    Walkalong Moderator

    Joined:
    Nov 20, 2006
    Messages:
    46,718
    Location:
    Alabama
    I am pretty close to needing to resize a bunch of .223, (getting low on reloaded .223) and have considered trying the X Die myself.
     
  18. RPCVYemen

    RPCVYemen Member

    Joined:
    Sep 7, 2006
    Messages:
    1,937
    I haven't even thought of resizing my 45 LC cases - but I don't shoot anything like max loads.

    I guess I should measure some of them to see if they need to be trimmed?

    Mike
     
  19. Claude Clay

    Claude Clay Member

    Joined:
    Mar 6, 2007
    Messages:
    2,700
    Location:
    CT
    i do not trim any pistol cases
    rifle cases are trimed close to max and after the 3rd firing seem to stay below max length. i can replicate a military or factory round, but shooting for accuracy generally means loading lighter than max and cases last (almost) forever.
     
  20. Hairballusmaximus

    Hairballusmaximus Member

    Joined:
    Nov 4, 2008
    Messages:
    85
    Location:
    Red Bluff, northern Ca.
    Idano, does the X-die still full length size? I shoot the .223 through a Bushmaster and have read/been told in auto/semi-auto they have to be full-length resized every time.
     
  21. Mark whiz

    Mark whiz Member

    Joined:
    Feb 5, 2004
    Messages:
    789
    Location:
    Wabash, IN
    Trimming frequency will also depend on what type of action a firearm has.......especially with rifles. A bolt action is MUCH easier on brass than a semi-auto, as a semi-auto is yanking the case out of the chamber before it has even had a chance to go thru the full cycle of expansion and return. Semis like the AR and M1As can really beat up brass - I find that I usually have to trim my M1A brass after the 3rd reload, and that is trimming them to near-minimum spec.

    How hot you load your rounds will affect trimming as well, as very hot loads tend to stretch brass more.
     
  22. 1858rem

    1858rem Member

    Joined:
    Aug 19, 2008
    Messages:
    1,235
    Location:
    in the sticks of nc
    i resize my 45 colt cases so the bullet does not fall onto the powder, they did w/out resizing so i resize an it is fixed, very tedious work as i still use a lee classic loader, ~300 rds in a week or so isn't too bad.... especially w/only 50 rds of brass to use lol
     
  23. Idano

    Idano Member

    Joined:
    Oct 2, 2006
    Messages:
    933
    Hairballusmaximus,

    Yep, the X-Die is a full length resizing die and in fact is available in small base too. Like I stated earlier I am a believer in X-Die technology; I have been using it now for 6-7 years. I drive a 55 grain bullet in my AR with 23 grains of DP2200, .5 grains below max, without a crimp. In that time some of my brass has been reloaded 10-15 times or more. I bet I haven't had to toss more then 10 cases in all those year and those were for loose primer pockets not split necks. The only time I ever trim my brass is before the first time I ever run it into the X-Die, after that because of the design of the die and mandrel the brass never grows again after the first time it is resized in the X-Die.

    It truly is one of those things you have to try to and see for yourself before you'll be a believer. Since I started using X-Dies I couldn't justify buying either a Giraud or Gracey case trimmer. Oh well that money can now go toward either the Dillon RF 100 Primer filler or the K.I.S.S bullet feeder for my Hornady AP:)
     
  24. Walkalong

    Walkalong Moderator

    Joined:
    Nov 20, 2006
    Messages:
    46,718
    Location:
    Alabama
    Sounds like an X Die needs to be ordered. I'll put it on the sticky by my keyboard right under thumb safety.
     
  25. Hairballusmaximus

    Hairballusmaximus Member

    Joined:
    Nov 4, 2008
    Messages:
    85
    Location:
    Red Bluff, northern Ca.
    Idano, Thanx for the info. I will def look into picking up an X-Die. Sounds like it will save me a lot of time trimming as I am using 2000+ brass at a shot.
     
Thread Status:
Not open for further replies.

Share This Page