close
Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Berger Bullets

Reply

Temperature sensitive powder?

LinkBack Thread Tools Display Modes
  #22  
Unread 12-14-2007, 12:10 AM
Platinum Member
 
Join Date: Feb 2005
Location: Nevada
Posts: 2,783
Victor,

That makes sence to me.
__________________
-----------------------------

-----------------------------
HEBREWS 13:8
Jesus Christ the same yesterday, and to day, and for ever.

Our Lord Jesus said that as it was in the days of Noah and
also as it was in the days of Lot so it shall be in the days...
It's happening again!!! God sent to us His prophet, and His Word
to this generation and we once more are rejecting it as was prophesied!!!

---> As promised, God Sent His Prophet to us!
Reply With Quote
  •   #23  
    Unread 03-07-2011, 09:39 AM
    Junior Member
     
    Join Date: Mar 2011
    Posts: 17
    Re: Temperature sensitive powder?

    [QUOTE=specweldtom;170462]JECustom and I have both heard that the Reloader powders are very temperature sensitive. I have a good load in .280 Rem with Reloader 22. Should I be looking for another powder?


    found this old thread about tempture sensitive powders and thought this might help fellow members out,this is from hodgdon web site.

    CARTRIDGE: 30-06 CASE: W-W
    PRIMER: WLR BULLET: 165 gr. Hornady SP
    POWDER
    H4350
    RELODER 19
    IMR 4350
    VIT N550
    AA 4350
    Pressure 70 Deg. F
    47,300 CUP
    47,200 CUP
    51,400 CUP
    50,100 CUP
    47,100 CUP
    Pressure 125 Deg. F
    47,800 CUP
    47,800 CUP
    50,900 CUP
    60,200 CUP
    45,100 CUP
    Pressure 0 Deg. F
    48,000 CUP
    48,900 CUP
    51,700 CUP
    47,600 CUP
    51,900 CUP
    Velocity 70 Deg. F
    2881 f/s
    2820 f/s
    2908 f/s
    2883 f/s
    2786 f/s
    Velocity 125 Deg. F
    2880 f/s
    2902 f/s
    2941 f/s
    2927 f/s
    2772 f/s
    Velocity 0 Deg. F
    2884 f/s
    2808 f/s
    2874 f/s
    2878 f/s
    2801 f/s
    Pressure Variation (Hot)
    +500 CUP
    +600 CUP
    -500 CUP
    +10,100 CUP
    -2,000 CUP
    Pressure Variation (Cold)
    +700 CUP
    +1,700 CUP
    +300 CUP
    -2,500 CUP
    +4,800 CUP
    Velocity Variation (Hot)
    -1 f/s
    +82 f/s
    +33 f/s
    +44 f/s
    -14 f/s
    Velocity Variation (Cold)
    +3 f/s
    -12 f/s
    -34 f/s
    -5 f/s
    +15 f/s
    Extreme Pressure Spread
    700 CUP
    1,700 CUP
    800 CUP
    12,600 CUP
    6,800 CUP
    Extreme Velocity Spread
    4 f/s
    94 f/s
    67 f/s
    49 f/s
    29 f/s
    CARTRIDGE: 300 Win. Mag. CASE: W-W
    PRIMER: WLRM BULLET: 180 gr. Sierra Boat Tail SP
    POWDER
    H4831SC
    AA 3100
    IMR 4831
    VIT N560
    RELODER 22
    Pressure 70 Deg. F
    54,000 CUP
    51,800 CUP
    51,000 CUP
    52,400 CUP
    53,000 CUP
    Pressure 125 Deg. F
    52,800 CUP
    54,300 CUP
    54,400 CUP
    57,000 CUP
    55,100 CUP
    Pressure 0 Deg. F
    53,200 CUP
    51,500 CUP
    49,400 CUP
    51,800 CUP
    52,700 CUP
    Velocity 70 Deg. F
    2985 f/s
    3050 f/s
    3012 f/s
    3009 f/s
    3087 f/s
    Velocity 125 Deg. F
    2995 f/s
    3113 f/s
    3080 f/s
    3101 f/s
    3142 f/s
    Velocity 0 Deg. F
    2986 f/s
    3000 f/s
    2953 f/s
    2980 f/s
    3067 f/s
    Pressure Variation (Hot)
    -1,200 CUP
    +2,500 CUP
    +3,400 CUP
    +4,600 CUP
    +2,100 CUP
    Pressure Variation (Cold)
    -800 CUP
    -300 CUP
    -1,600 CUP
    -600 CUP
    -300 CUP
    Velocity Variation (Hot)
    +10 f/s
    +63 f/s
    +68 f/s
    +92 f/s
    +55 f/s
    Velocity Variation (Cold)
    +1 f/s
    -50 f/s
    -59 f/s
    -29 f/s
    -20 f/s
    Extreme Pressure Spread
    1,200 CUP
    2,800 CUP
    5,000 CUP
    5,200 CUP
    2,400 CUP
    Extreme Velocity Spread
    10 f/s
    113 f/s
    127 f/s
    121 f/s
    75 f/s
    CARTRIDGE: 308 Win. CASE: W-W
    PRIMER:
    WLR BULLET: 168 gr. Sierra BTHP
    POWDER
    VARGET
    WIN. 748
    RELODER 15
    VIT N140
    IMR 4064
    AA 2520
    Pressure 70 Deg. F
    51,100 CUP
    50,200 CUP
    50,300 CUP
    49,600 CUP
    51,100 CUP
    49,900 CUP
    Pressure 125 Deg. F
    51,500 CUP
    51,100 CUP
    47,300 CUP
    51,000 CUP
    49,700 CUP
    52,600 CUP
    Pressure 0 Deg. F
    51,200 CUP
    47,300 CUP
    48,700 CUP
    47,500 CUP
    51,300 CUP
    50,500 CUP
    Velocity 70 Deg. F
    2771 f/s
    2724 f/s
    2715 f/s
    2665 f/s
    2686 f/s
    2805 f/s
    Velocity 125 Deg. F
    2779 f/s
    2769 f/s
    2705 f/s
    2679 f/s
    2697 f/s
    2844 f/s
    Velocity 0 Deg. F
    2778 f/s
    2655 f/s
    2665 f/s
    2629 f/s
    2651 f/s
    2781 f/s
    Pressure Variation (Hot)
    +400 CUP
    +900 CUP
    -3,000 CUP
    +1,400 CUP
    -1,400 CUP
    +2,700 CUP
    Pressure Variation (Cold)
    +100 CUP
    -2,900 CUP
    -1,600 CUP
    -2,100 CUP
    +200 CUP
    +600 CUP
    Velocity Variation (Hot)
    +8 f/s
    +45 f/s
    -10 f/s
    +14 f/s
    +11 f/s
    +39 f/s
    Velocity Variation (Cold)
    +7 f/s
    -69 f/s
    -50 f/s
    -36 f/s
    -35 f/s
    24 f/s
    Extreme Pressure Spread
    400 CUP
    3,800 CUP
    3,000 CUP
    3,500 CUP
    1,600 CUP
    2,700 CUP
    Extreme Velocity Spread
    8 f/s
    114 f/s
    50 f/s
    50 f/s
    46 f/s
    63 f/s
    CARTRIDGE: 22-250 Rem. CASE: W-W
    PRIMER: WLR BULLET: 55 gr. Speed FMJ-BT
    POWDER
    H4895
    VIT N140
    RELODER 12
    AA 2460
    IMR 4895
    Pressure 70 Deg. F
    49,500 CUP
    48,700 CUP
    51,700 CUP
    50,000 CUP
    48,100 CUP
    Pressure 125 Deg. F
    48,700 CUP
    50,500 CUP
    49,400 CUP
    54,100 CUP
    52,300 CUP
    Pressure 0 Deg. F
    49,700 CUP
    46,800 CUP
    51,900 CUP
    48,700 CUP
    48,000 CUP
    Velocity 70 Deg. F
    3742 f/s
    3662 f/s
    3607 f/s
    3671 f/s
    3699 f/s
    Velocity 125 Deg. F
    3748 f/s
    3692 f/s
    3609 f/s
    3707 f/s
    3791 f/s
    Velocity 0 Deg. F
    3728 f/s
    3611 f/s
    3633 f/s
    3673 f/s
    3625 f/s
    Pressure Variation (Hot)
    -800 CUP
    +1,800 CUP
    -1,700 CUP
    +4,100 CUP
    +4,200 CUP
    Pressure Variation (Cold)
    +200 CUP
    -1,900 CUP
    +200 CUP
    -1,300 CUP
    -100 CUP
    Velocity Variation (Hot)
    +6 f/s
    +30 f/s
    +2 f/s
    +36 f/s
    +92 f/s
    Velocity Variation (Cold)
    -14 f/s
    -51 f/s
    +26 f/s
    +2 f/s
    -74 f/s
    Extreme Pressure Spread
    1,000 CUP
    3,700 CUP
    1,900 CUP
    5,400 CUP
    4,300 CUP
    Extreme Velocity Spread
    20 f/s
    81 f/s
    26 f/s
    36 f/s
    166 f/s


    BACK | FORWARD
    Reply With Quote

      #24  
    Unread 03-07-2011, 10:11 AM
    Platinum Member
     
    Join Date: Jul 2004
    Location: Texas
    Posts: 7,001
    Re: Temperature sensitive powder?

    [QUOTE=goosepit;484091][QUOTE=specweldtom;170462]JECustom and I have both heard that the Reloader powders are very temperature sensitive. I have a good load in .280 Rem with Reloader 22. Should I be looking for another powder?





    I see no reason to rush out and change powders if you have a good load and are aware of the
    temp changes in your range of temperatures.

    High temps seem to be the culprit and it should be of concern if you shoot at the higher temps
    (90o+)

    Sense Hodgdon came out with there extreme line of powders I have tried to convert to them
    with very good results except for a few that like other powders better. and on those I just have
    to watch the temp when I use them (One load will increase 150 ft/sec from 30o to 100o).

    J E CUSTOM
    __________________
    "PRESS ON"
    Reply With Quote
      #25  
    Unread 03-07-2011, 01:25 PM
    Junior Member
     
    Join Date: Jul 2010
    Location: lancaster,PA
    Posts: 3
    Re: Temperature sensitive powder?

    No where near the experience you guys have but here is my experience with RL22 and two 300 RUM
    My brother and nephew asked me to work up the a load that would work in both Remington 700s using this powder. They also hoped I could find the same load that was interchangable in both guns. Riiiiiight.
    Surprisingly, much easier than I thought. One is a standard 700 in a glass bedded laminated stock. The other is a heavy fluted barrel in a expensive pillar bedded synthetic stock. Barrels broken in on both. Each of the guns supposedly hated factory ammo.
    I used 180 gr Barnes TTsx bullets. I found that 87 grains of Rl 22 gave the best accuracy. I avoided pushing the load over 87.5 grains because, of the temp. sensitivity fear and they aren't my guns.
    Fired all groups at 300 yards.
    The one day the temp was in the 80s and I had "cooked" the rounds in my car all day. Can't remember the velocity average at the moment. Groups were 0.5 moa(great for me). No pressure signs but velocity was a bit higher than my goal.
    This winter I completed the project. Temperatures were in the 30s to high of 40 degrees F.
    Excellent groups again but the one group poi was 3 1/2 inches lower in the cooler weather. No horizontal deviation. The velocities averaged 150 fps less. In my brothers gun the poi was 3 inches lower in the cooler weather. With an average loss in velocity of 125 fps.
    They are happy that the 87 grains works in both guns and they got much better accuracy.
    My take away is that "pressure sensitive" powders can/do give good accuracy but I will not push the velocity to the upper limits.
    Reply With Quote
      #26  
    Unread 03-07-2011, 06:44 PM
    Platinum Member
     
    Join Date: Apr 2010
    Location: Allen, TX
    Posts: 2,608
    Re: Temperature sensitive powder?

    I agree with JE that you don't necessarily need to change if you already have a good load that meets your needs.

    The key to success would be to get dope on your rifle/load under the conditions that best represent what you'll experience when hunting.

    I have a small sample of data from my own rifles that seems to corrobrate Hodgdon's claims. And, I plan to stick with h4831sc in my 6.5x284 12F rifle.

    But, RL22 is still good enough for much of the hunting that I do.

    --richard
    Reply With Quote
      #27  
    Unread 03-08-2011, 10:20 AM
    Silver Member
     
    Join Date: Oct 2008
    Location: Bryan, Tx
    Posts: 284
    Re: Temperature sensitive powder?

    About a year ago or so on this site, there was a post in a thread listing powder sensitivity in order from most to least. Not sure what tests it was based on, but I can't seem to find it now. Anybody remember where that is? Seems relevant to the discussion at hand.
    Reply With Quote
    Reply

    Bookmarks

    Thread Tools
    Display Modes


    Similar Threads for: Temperature sensitive powder?
    Thread Thread Starter Forum Replies Last Post
    temperature sensitive powders supercrossbmx69 Long Range Hunting & Shooting 3 02-02-2011 12:13 PM
    ? Temperature Sensitive ? unvisable Reloading 7 12-11-2007 11:30 PM
    temperature sensitive powders????? 30-06 boy Reloading 4 12-06-2005 08:04 PM
    R25 being to temperature sensitive. mbianchini Long Range Hunting & Shooting 4 02-06-2003 06:58 AM
    Temperature sensitive powders? Marsh Mule Rifles, Bullets, Barrels & Ballistics 1 07-01-2002 01:27 PM


    All times are GMT -5. The time now is 08:09 AM.


    Powered by vBulletin ©2000 - 2017, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC