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200 Gr XTP?

Discussion in '10mm Reloading Forum' started by SinCityGlocker, Jan 10, 2011.

  1. SinCityGlocker


    Likes Received:
    Oct 11, 2007
    Las Vegas, NV
    I am developing a load for this bullet using Blue Dot. Lyman 48 says the max load is 9.6 and my brand new Hornady book says 9.4. I have loaded a series of these from 8.0 to 9.4 that I plan on testing Saturday morning. Assuming I show no signs of overpressure on my loads up to 9.4, do you think it is safe to push it to 9.6? I would really like to get this load to about 1175 fps out of a stock G20 and I think I will need to be at 9.6 to get there.
  2. lunker


    Likes Received:
    Sep 6, 2007
    New Hampshire Seacoast
    Be sure to use non-magnum large pistol primers. Blue Dot generates too much pressure with Magnum primers.

  3. _The_Shadow

    _The_Shadow Ret. Fireman

    Likes Received:
    Jul 23, 2007
    Southeast, LoUiSiAna
    You will be wise to work very slowly and cautiously in very small incraments, taking careful observations, measuments inspecting each and every piece of brass during your test. Good luck and be very safe!

    I have used Blue Dot to drive the Hornady 200 XTP's to 1175-1200fps from my S&W 1006 but I must advise caution! This was worked up 0.1 grain at a time to get where I am and I concider this a MAXIMIUM load for my weapons! This load original was printed by Speer for use with their Speer 200 gr FMJ seated to 1.250"(which is shorter than the Hornady 200 gr XTP) and tested in the Colt Delta Elite 5.00" barrel and made 1170 fps...

    I loaded with older Blue Dot as from HERCULES...10.5 grains hand weighed and verified on 2 different scales(one balance beam the other electronic) that agree with each other.

    Here is the data: Hot Louisiana day! 99 deg. 20' above sealevel
    S&W 1006 5.00" barrel, Wolff 22lb recoil spring
    10.5 grains Blue Dot(HERCULES in cardboard canister)
    C.O.A.L. 1.260" seated
    Primer CCI 300
    Velocity 1175-1200fps
    Primers started to flatten some

    These are slower from my Glock 29 with the 3.78" barrel...

    Again this is older Blue Dot from HERCULES! I have yet to open my new ALLIANT plastic jug to test with.
    Last edited: Jan 12, 2011
  4. Kegs

    Kegs Ol 8 fingers ;)

    Likes Received:
    Oct 26, 2009
    Cold side of conus
    I've gotten 1260 fps average with the 200xtp out of an "almost" G-20 length barrel, but not with blue dot.

    I will be attempting as high or higher velocities with a .40S&W soon.

    Definitely use regular large pistol primers as suggested above - and not magnum. Blue dot is a somewhat unforgiving powder.
    Last edited: Jan 12, 2011
  5. MakeMineA10mm

    MakeMineA10mm * * * * Lifetime Member Millennium Member

    Likes Received:
    Feb 13, 1999
    Central Illinois
    <-- is not a fan of Blue Dot either...

    If you want maximum performance with a 200gr XTP, it's hard to beat AA#9. 800x, N350, possibly 3N38 can also get you there, but they have their quirks too. AA#9 is the easiest, IMO.

    NO powder, when persuing these types of top-end loads is without risk. Be sure to follow all the rules and go slow. In case you haven't already, be sure to read this (it's not JUST a CYA / Lawyer-talk thing):
  6. JTknives


    Likes Received:
    Dec 1, 2009
    I have pushed 200gr XTP's to over 1400fps using 800x and actually hit 1500fps in one load. I stopped as i was getting flatter primers then i am comfortable with. i am using a g20 with a lonewolf barrel that's 5.6". Im not going to list load data as you need to work up to what you need/want. but one little tip, dont use mag primers at all. i bought into the whole you got to use mag primers and then i tryied cci300 primers and my groups shrunk by half what thy where before. Also i notice primer problems when running mag primers, thy start to flatten at lower velocity's then when using non mag primers.
    knc1105 likes this.