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I need a little advise on 9mm

Discussion in 'Ammunition & Reloading' started by Master17, May 28, 2013.

  1. Master17

    Master17 Salem Member

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    I am fairly new at reloading and in need of some advise. I am loading some 9mm for my XDm. I am using the following: 115g Precision FMJ round nose, Hodgens Tite group and cci primers. I am trying to see how light I can load them and still keep accuracy. My question is about the oal. I know that the recommended is 1.169. I was told to test the length by dropping in barrel until I can feel the rifling. I am up to a 1.18 oal and still not touching. That is only leaving .13 in the case. I can't imagine that it is going to feed reliably if i go much longer. Advise? Thanks.
     
  2. 9mm

    9mm Issaquah WA Member

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    I load all my 115gr FMJ / Plated from 1.100 - 1.125 I would keep it under the 1.169" max, you will find the longer you go, they will not fit in the magazine and that is bad.
     
  3. RVTECH

    RVTECH LaPine Well-Known Member

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    I agree. The 1.169 may be a max recommendation but is on the 'long side' for 9mm and may give you trouble. 9mm chambers can vary and may require some experimenting before you get the best OAL for your gun.
     
  4. Master17

    Master17 Salem Member

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    So i don't have to fit it to the barrel?
     
  5. RVTECH

    RVTECH LaPine Well-Known Member

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    No, you want to load no longer than is necessary to cycle properly each time - and then maybe a tad short after that length is determined. Most autos, especially newer ones have tighter chambers and your OAL range (for proper functioning) will be narrow at best. I had a heckuva time coming up with the right OAL for my CZ 75 - which is known to have a short and tight chamber by design.
     
  6. GadgetGeek

    GadgetGeek Portland, Oregon Member

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    RVTECH- What did you end up with for an OAL on your CZ75? I load 1.115" and have great results with 124gn. Montana Gold JHP in front of 5.3gn. power pistol. Also works well in my other 9mm's. Just curious what number you came up with on yours.

    Master17 - How I came up with my OAL / load was simple trial and error. I first started out with whatever the load book OAL I was looking at said to seat to. Hand loaded a bunch of 10 round groups .2gn difference in charge (from 5% above min charge to 5% below max charge) and went out and shot each group to see what cycled the gun(s) reliably, and where the sweet spot for tighter groupings was. I put some serious bench time in making and testing each load.

    After I settled on a charge, I now went back in the reloading room and loaded more 10 round groups. This time I changed the OAL by .005" for each group both longer and shorter. Back to the range to see what shot the tightest group. Took notes and now that's what I load.

    Load development is my favorite part of reloading! It's interesting to see how the different variables effect accuracy!

    Load on!
     
  7. oknow

    oknow amboy wa. Well-Known Member

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    I load with xtreme 115g plated with a oal of 1.100 and that works fine in the xdm I shoot.
     
  8. Mikej

    Mikej Portland Gold Supporter Gold Supporter 2015 Volunteer 2016 Volunteer

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    That 1.169 COAL is NOT what is recommended, it's what they show as "Maximum" COAL, there is a difference. A range of 1.120-1.135 is what they tested, also different than recommended.

    If your just starting out load to what they tested, then change up your OAL if you feel like, just make sure that they drop cleanly in and out of the barrel. I'm loading 124gr Montana Gold hp with 231. I had to bring my OAL down to 1.085 due to Wifey's Kimber Pro Aegis' tight chamber. I couldn't use Berry's because the sides of the bullet were so tall, and I would have needed to make OAL to what I thought would be TOO short for safe pressures. That is why I stay with a fairy light load. If you look at the book AND look on the Hogdon web site for your recipes you'll see quite a range.

    I use 4.2gr of W-231 under a MG 124gr JHP.

    Mike
     
  9. RVTECH

    RVTECH LaPine Well-Known Member

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    It's been a while since I loaded for it and don't have my caliper and rounds in the same place at the moment but I believe I was at 1.100 - but that was with some vintage (70's) NOS Speer 125 gr. JSP bullets which have somewhat of a pronounced, rounded nose with fairly soft lead and my CZ was real finicky with them until I found the right OAL to get them to feed properly. Everything else runs fine a 1.125 and I may stop using the Speer bullets because of this and use them up in .38 Special plinkers. I have about 500+ that were given to me so I need to use them in something.
     
  10. orygunmike

    orygunmike Beaverton, OR Active Member

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    For my CZ75 ... I found that 1.12 was too long .... I load 124/125g bullets to 1.09 for the CZ75

     
  11. ripcity

    ripcity Milwaukie Active Member

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    For all my 9's I load 124 grain at 1.15. Never have had an issue.
     
  12. nwbobber

    nwbobber Longview, Wa. Active Member

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    What you don't want is to load them long enough that they touch the rifling. The round should freely drop into your chamber and headspace on the rim without the bullet contacting the rifling. 1.10 for a round nose is about right, under max you listed. I load a badman 115RN lead bullet 1.095 in my XDM, and it works.
     
  13. DOA

    DOA Aloha, OR -185th & TV Hwy Active Member

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  14. Master17

    Master17 Salem Member

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    I have been loading mine at 1.12 and seem to work great.
     
  15. Allfat

    Allfat Marion County Active Member

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    Ive been loading 115gr LRN with 4.2gr of American Select at 1.135" OAL.
     
  16. AMProducts

    AMProducts Maple Valley, WA Jerk, Ammo Manufacturer Silver Supporter

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    For a similar bullet I typically load to 1.160" if you load too long it doesn't fit in the mag.
     
  17. ma96782

    ma96782 Vancouver, WA Well-Known Member

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    Try this for a start.
    45seatingpossibilitiesx.jpg
    I did this for my .45 ACP M1911A1 when I was shooting 2700 Matches. You may need to tweek it alittle to get it working "just right" for you.

    Aloha, Mark

    PS........my son has also used this method to reload for his S&W M&P-9.
     
  18. Master17

    Master17 Salem Member

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    That is awesome. Thanks
     
  19. cookie

    cookie THE SOCIALIST STATE OF KALI - FORNIA Well-Known Member

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    Yep if the bullet touches the rifling it is too long and will lead to over pressure loads. A tiny bullet jump is good. Also drop a sized case without a bullet as a reference into the barrel as mentioned on the above post to see how the head space should look .
     
  20. Master17

    Master17 Salem Member

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    This is what I have been doing. It seems to work well. 124g fmj, OAL 1.113 with 3.8 of Bullseye. I am going to try 124g fmj, OAL 1.118 with 2.9 of Competition. Any input on this? Thanks