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Thread: Cm9 OAL

  1. #1
    Join Date
    Jul 2015
    Location
    Oregon/Arizona
    Posts
    14

    Default Cm9 OAL

    Reloaded 9mm 115g round nose full metal jacket, followed Hodgdons web site OAL recommended 1.169 and they were too long for my cm9 magazines by just a smidge. They worked well in my CZ 75. Looked carefully at the defensive loads I uaually carry, that work flawlessly and also at a long list of other load specs from Handloads.com, decided I'm going with 1.142 OAL from now on. My powder is mid range so am hoping this adjustment won't over pressure. Any thoughts?
    Have never had a single failure with my CM9, just love shooting it! Have a cm45 coming, really hoping that works as well as the cm9, can hardly wait for it to arrive!

  2. #2
    Join Date
    Jul 2015
    Location
    Oregon/Arizona
    Posts
    14

    Default

    Reloaded 100 with 1.158 over all length, used three mags, not one problem. Am learning to shoot more accurately, got a long way to go.......groan. Got my CM45 today, need a few parts for the Dillon square deal before I can reload .45 acp, hope the CM45 works as well as my CM9 which has never failed me! Anyone have bullet weight and other reloading suggestion? Read somewhere that small semi autos work best with slightly hotter than average loads. Anyone have trouble with lighter loads with the CM45? Every time I shoot my CM9 I like it even better. What a great gun!

  3. #3
    Join Date
    Apr 2011
    Location
    Vegas, BABY!
    Posts
    271

    Default

    My CM9 and MK9 like Berry's 124grn with 4.5grn Power Pistol loaded to OAL of 1.125. (chrono at 1050 FPS)

    All my 9mm's like it except my K9. I haven't found a load it likes yet. It doesn't get shot much, so I'm no hurry to figure it out.
    All that is necessary for the triumph of evil is that good men do nothing.

    USAF (Ret)
    NRA Life Member
    Conservative

  4. #4

    Default

    JimBianchi, I bet that load is a soft shooter. I load a 124gr cast lead powder coated Lee flat nose bullet with 5.4gr of PP for my TriStar C100 and love it. Think my load will work in a CM9? Picking one up tomorrow.

    Cruce Dum Spiro Fido

  5. #5
    Join Date
    Nov 2010
    Location
    SE Michigan
    Posts
    752

    Default

    Berry's HBRN, 124 gr, 4.2 Titegroup, COAL 1.150. PM9 shoots like a laser.
    Berry's HBRN, 124 gr, 4.8 WST, COAL 1.150. Softer load.
    Berry's HBRN 185 gr, 5.2 Titegroup, COAL 1.250. PM45 eats them up.
    Berry's RN 230 gr, 4.8 - 5.0 Titegroup, COAL 1.250. PM45 like a hot load

  6. #6
    Join Date
    Sep 2011
    Posts
    1,433

    Default

    Comment canceled.

  7. #7
    Join Date
    May 2018
    Posts
    13

    Default

    I have a new PM45 coming and I have thousands of coated Oregon Trail 200 swc and 230 rn that I'm gonna try in it...got lots of Unique so will try my favorite 1911 loads first....bought a lot of Unique, 2400, 296, H4831, 748, and Bullseye during the Obama years....he sold lots of guns and ammo.

  8. #8
    Join Date
    Oct 2012
    Location
    Raleigh, NC
    Posts
    16

    Default

    Not all bullets of the same weight have the same nose profile (ogive) so may need to be loaded to different OAL. I have a 9mm AR that I use RMR 115 FMJ bullets in, and I have to load those to 1.100" so they will pass the plunk test. I can load them a little longer for a couple of my guns, but the AR has a slightly shorter leade. I worked up loads starting low, and ended up settling on 6.1gn of Power Pistol.

    For my pistols, I mostly use plated. The RMR 124gn can be loaded much longer and still "plunk", and the Xtreme plated bullets in most cases can be loaded to the full SAAMI length.

    Whenever I try out a new bullet type, I will use the plunk test to determine just how long I can load them, and I have a spreadsheet with the information I collect. I like to have at least 0.020" jump to the lands.

  9. #9
    Join Date
    May 2018
    Posts
    13

    Default

    I have had great success using the Dillon c.o.a.l. guages...if they fall in and out of them, they gonna shoot.

  10. #10
    Join Date
    Jun 2014
    Location
    Austin, Texas
    Posts
    981

    Default

    Watch for signs of over pressure. You should be OK.

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