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RMR 180gr FMJ RNFP

Discussion in 'Handloading and Reloading' started by CrankyCraig, Feb 12, 2019.

  1. CrankyCraig

    CrankyCraig Member

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    Just now getting time to load some RMR 180gr FMJ RNFP Bullets for the first time.

    I was just curious what the guys or gals that load these are seating them @ and what powders are being used?

    Yes I have just about every manual on my shelf by my bench just looking for input from folks shooting these particular Bullets.

    I have WSF, BE86 & Alliant Sport pistol on hand as well as a few others. Just looking for a solid load to kill paper 7-15 yards. Not mouse farts & not pushing them to hard.

    Gun being used is an HK VP40.

    Thanks.
     
  2. Walkalong

    Walkalong Moderator

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    6.0 Grs BE-86 with a S&B SPP under a 180 Gr X-Treme plated HP @ 1.130 to 1.135 OAL gave me an average 976 FPS from a 3.85" Baby Eagle at 52 degrees and 35% RH. Shot well.

    4.8 Grs Sport Pistol with a S&B SPP under a 180 Gr SNS coated TrFP @ 1.130 +/- .002 OAL gave me an average 932 FPS from a 4" FNS-40 at 83 degrees and 73% RH. Shot well with very small ES & SD numbers.

    Check data, be safe.
     
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  3. vaalpens

    vaalpens Member

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    I have not tested the RMR 180gr FMJ RNFP bullets yet, and have not tested a lot with 180gr bullets, but did some testing with pulled FMJ RNFP bullets. The 6.0gr of BE-86 did perform well in the accuracy department:

    40SW, P229, 3.9"
    Case: Federal
    COL: 1.125"
    Pulled, 180gr, FMJRNFP, BE86, 6gr, GINEXSP
    Average: 920
    ES: 24
    SD: 10.5
    Force: 338
    PF: 165
    Velocities: 934, 925, 910, 910, 925
    Grouping @ 15yd: 0.589"
    Test Date: 11/12/2017

    You did not list HP-38, but maybe it falls under your "few others". It also performed well with the pulled bullets.

    40SW, P229, 3.9"
    Case: CBC
    COL: 1.125"
    Pulled, 180gr, FMJFP, HP38, 4.6gr, GINEXSP
    Average: 851
    ES: 40
    SD: 16.2
    Energy ft/lbs: 289
    PF: 153
    Velocities: 856, 870, 860, 830, 839
    Grouping @ 15yd: 0.717"
    Test Date: 11/12/2017

    Let us know how these RMR bullets perform. I have been looking around to find some cheaper .40 bullets, but it seems a cheaper .40 bullet is not that easy to find.
     
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  4. bds

    bds Member

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    You have good selection of powders for 40S&W and Herco is another good powder for 40S&W. When I shot USPSA in the 90s, I used WSF to make major PF and W231/HP-38 to make minor power factor.

    In recent years, WSF got replaced with BE-86 as it produced more accurate loads than my reference loads. W231/HP-38 got replaced with Sport Pistol as it meters better (Capable of less than .05 gr variance), burns cleaner (Many match shooters consider Sport Pistol the new N320 that burns cleaner) and much less temperature sensitive - https://www.thehighroad.org/index.p...-performance-info-for-shot-011017-pdf.235432/

    Mind you, I like WSF and even Herco for 40S&W as they produced good accurate loads (Herco even burned inside of cases clean :eek:) but if I had to choose one powder, I would lean towards BE-86.

    Below are 15/25 yard groups with 6.1 gr Herco and RMR 180 gr HM RNFP loaded to 1.155" (More on using longer OAL below) - https://www.thehighroad.org/index.p...-for-lead-plated-bullets.743416/#post-9363753

    [​IMG]

    W231/HP-38/Sport Pistol can produce 9mm-like light target loads with 180 gr bullet from 3.9 gr to 4.3 gr at 1.135" (Which BTW is below Hodgdon's start charge) that I have used to introduce new shooters to 40S&W due to light recoil, especially with compacts/subcompacts - http://www.hodgdonreloading.com/data/pistol
    For optimal seating depth/OAL and resulting accuracy, while I usually seat 9mm much deeper than SAAMI max to increase neck tension for more consistent chamber pressures; with 40S&W I do the opposite, especially for 180 gr TCFP/RNFP with long bullet base (To reduce gas leakage) and load them longer than SAAMI max of 1.135".

    In this thread, I incrementally increased 180 gr TCFP OAL longer than SAAMI max (Started from 1.125") and found longer working OALs produced incrementally smaller groups (Many match shooters will use even longer 1.180"-1.190" depending on the barrel) - https://www.thehighroad.org/index.p...-for-lead-plated-bullets.743416/#post-9363753

    [​IMG]

    While around 1.142" OAL works with various 180 gr TCFP bullets in my M&P40/Glock 22 (Even with Lone Wolf barrels with tighter chambers), I found 180 gr RNFP can be loaded longer.

    Due to the nose profile/ogive of RMR 180 gr HM RNFP, Glock magazine max length of 1.165" dropped in the Lone Wolf and Glock 40S&W chambers freely with a "plonk" and spun without hitting the start of rifling. Taper crimp used was .421". However, 1.165" dummy rounds got stuck in the magazine tube when I loaded 3 rounds. While 1.160" dummy rounds fed and chambered from the magazine even in tight chambered Lone Wolf barrels, 1.155" was decided as the final working OAL to compensate for variations in resized mixed range brass lengths.

    Below is RMR 180 gr HM RNFP loaded to 1.155" next to 1.135" - https://www.thehighroad.org/index.p...ick-plated-bullets.761471/page-4#post-9644303

    I check for sufficient neck tension by measuring OAL before and after feeding/chambering the dummy rounds from the magazine and releasing the slide without riding it. After two chamberings, I did not measure any bullet setback so I rechambered five times. Guess what? No bullet setback!

    [​IMG]

    Below are 25 yard groups with 6.1 gr BE-86 and RMR 180 gr HM RNFP loaded to 1.150"/1.155" - https://www.thehighroad.org/index.p...ick-plated-bullets.761471/page-4#post-9645513

    Alliant load data - http://www.alliantpowder.com/reload...wderlist.aspx&type=1&powderid=38&cartridge=29
    [​IMG]

    Since some could not believe shot groups obtained with BE-86 and factory stock Glock 22 (With well broken-in trigger), I asked THR member Dudedog to verify next range test in person and got the below group - https://www.thehighroad.org/index.p...ick-plated-bullets.761471/page-4#post-9646469

    [​IMG]

    So I would recommend using HK's barrel to determine the longest working OAL that will feed/chamber reliably from the magazine.

    BTW, the 180 gr RNFP FMJ bullets listed on RMR's website appears to be Montana Gold bullet (Which I used exclusively for USPSA shooting) and they are very consistent bullets for accuracy (Maybe Jake could verify for us :)) - https://www.rmrbullets.com/shop/bul...tal-jacket-round-nose-flat-point-bullets-new/
     
    Last edited: Feb 13, 2019
    1KPerDay and CrankyCraig like this.
  5. CrankyCraig

    CrankyCraig Member

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  6. CrankyCraig

    CrankyCraig Member

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    Yup got some 231 as well thinking about the BE86 to start thanks!
     
  7. vaalpens

    vaalpens Member

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    Long Shot is another powder that is known to be good in 40S&W, but I have never tested it with 180gr bullets. It does shine with 155gr bullets though.
     
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  8. Walkalong

    Walkalong Moderator

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    5.0 Grs W-231 with a S&B SPP under a 180 Gr SNS coated TrFP @ 1.130 +/- .002 OAL gave me an average 937 FPS from a 4" FNS-40 at 90 degrees and 49% RH. Shot very well with a short pleasant recoil impulse and with very small ES & SD numbers.

    Check data, be safe.
     
  9. Walkalong

    Walkalong Moderator

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    6.2 Grs Longshot with a CCI-500 SPP under a 180 Gr X-Treme plated HP @ 1.140 +/- OAL gave me an average 954 FPS from a S&W SD40VE at 62 degrees and 52% RH. Shot very well with low ES & SD.

    Check data, be safe.
     
    glc24 likes this.
  10. Lennyjoe

    Lennyjoe Member

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    I used Longshot with 180’s as well with good results
     
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