ADvertise hereTitan ReloadingRepackboxMidSouth Shooters Supply
Lee PrecisionInline FabricationRotoMetals2

Results 1 to 13 of 13

Thread: CBI pistol powder

  1. #1
    Boolit Master

    Join Date
    Jul 2012
    Location
    South of St. Louis
    Posts
    876

    CBI pistol powder

    I picked up 16 pounds of CBI pistol powder and I'm finding that the supplied data isn't enough to cycle but is just shy of being a compressed load. We obviously stopped using it till we can better understand what this powder actually is.

    Has anyone used it before? It came from CDVS

  2. #2
    Boolit Master

    Join Date
    Jul 2012
    Location
    South of St. Louis
    Posts
    876
    This is the data that came with it

    9MM LUGER (BERETTA 92) 115 GRAIN, JACKETED PROJECTILE WITH 4.6 GRAINS POWDER. 4 SHOT GROUP = 2 ”

    45 ACP (SPRINGFIELD) 230 GRAIN LEAD PROJECTILE WITH 5.5 GRAINS POWDER. 4 SHOT GROUP = 2 ”

    40 s&w (GLOCK) 165 GRAIN JACKETED PROJECTILE WITH 5.1 GRAINS POWDER. 4 SHOT GROIP = 1.75 ”

    .38 SPECIAL (COLT) 125 GRAIN JACKETED PROJECTILE WITH 5.3 GRAINS POWDER. 4 SHOT GROUP 2″

    9MM (MAKAROV EAST GERMAN) 95 GRAIN JACKETED PROJECTILE WITH 3.4 GRAINS POWDER. 4 SHOT GROUP = 2.25″

  3. #3
    Boolit Master
    Join Date
    May 2013
    Posts
    659
    flyingmonkey35 was saying that he's using it. I asked about load data and what it could be equated to. I think for cheap powder I'd stick with the sale powder Vally has on imr blue, green, red and target. or else what Jeff Bartlett has to offer

  4. #4
    Boolit Master

    Join Date
    Jul 2012
    Location
    South of St. Louis
    Posts
    876
    We already have the 16 pounds so to late to back out. The 4.6gr in 9mm is very sluggish to cycle so we stopped. I havent got a chance to look at it yet but thinking it would be better suited for 38 or 45.

  5. #5
    Boolit Master
    Join Date
    Jul 2015
    Posts
    680
    The powder looked interesting to me.

    I took their 357 Mag load data (see below) and tried to figure a burn rate. Closest I could come up with was VV 3N37. Looks to be slower than VV N340 / HS-6 / Unique and might be just a tad faster than VV N350 / Longshot / AA #7 / SW Heavy Pistol / Lovex D037.1. I did not like seeing the load data take a drop in velocity / pressure going from 8.0 to 9.0 grs.

    If I had not just stocked up with slow pistol powders (SW Heavy Pistol and an equivalent to AA-1680), I might have given it a try. They ask $10 per pound for 16 lbs and then say as low as $4.50 per pound in large quantities. If someone in Southeast NC wants to go in for a volume order, I might could be talked into a modest trial at somewhere in between the numbers above.

    TEST LAB RESULTS IN .357 MAGNUM WITH 125 GRAIN FN

    GRAINS AVERAGE VELOCITY /FPS AVERAGE PRESSURE/FPS

    6.0 1,171 21,223

    7.0 1,301 25,917

    8.0 1,422 29,770

    9.0 1,399 24,956

    10.0 1,537 31,352

  6. #6
    Boolit Buddy
    Join Date
    Oct 2011
    Posts
    349
    Looks to be slower than VV N340 / HS-6 / Unique and might be just a tad faster than VV N350 / Longshot...
    Perhaps it's close to Alliant Herco? You mentioned that an uncompressed charge of the powder barely cycles in 9mm. I get that same effect with Herco. 5.6/Herco/125 (uncompressed) barely functions, but 5.8/Herco/125 (slightly compressed) functions like a champ, burns clean (for Herco), and groups well. Everything improves as I work up to the max 6.2/Herco/125 (somewhat compressed). Perhaps you should examine Herco data.
    For in much wisdom is much grief: and he that increaseth knowledge increaseth sorrow. Ecclesiastes 1:18
    He that troubleth his own house shall inherit the wind: and the fool become servant to the wise of heart. Proverbs 11:29
    ...Verily I say unto you, Inasmuch as ye have done it unto one of the least of my brethren, ye have done it unto me. Matthew 25:40


    Carpe SCOTCH!

  7. #7
    Boolit Master


    Join Date
    Oct 2009
    Location
    Northern Michigan
    Posts
    4,573
    If I did not have a lifetime supply of pistol powder i would get 50 lbs at that price. Even if it just works in my .38/.357's it would be worth playing with.

    I would start with .38 spl cases in a .357 and use a chronograph to see how it compares to known powders while watching for signs of pressure. Working up in .3 gr increments will be safe.
    Don Verna

    NRA Endowment Member

  8. #8
    Boolit Master
    Join Date
    Jul 2015
    Posts
    680
    Herco is certainly close on burn rate, but is a flake powder. Flake is usually less quite a bit dense than ball.

    For finding the most similar standard powder, it would help to get the density of CBI and the density of similar burn rate powders.

  9. #9
    Boolit Master
    Join Date
    Jul 2015
    Posts
    680
    Okay, I dug around and found the following density values (gr/cc) for reference:

    8.91 Alliant Herco
    9.10 Hodgdon Universal
    9.16 Alliant Unique
    9.34 IMR 800X
    9.38 Vihta Vuori N340
    10.24 Vihta Vuori N350
    10.95 Vihta Vuori 3N37
    11.25 Alliant Power Pistol
    11.91 Winchester WSF
    12.13 Hodgdon Longshot
    12.35 Ramshot Silhouette
    14.05 Hodgdon HS-6
    15.31 Accurate No. 7
    16.05 Accurate No. 5

  10. #10
    Boolit Grand Master

    swheeler's Avatar
    Join Date
    Mar 2005
    Location
    Montana
    Posts
    5,275
    Quote Originally Posted by P Flados View Post
    Herco is certainly close on burn rate, but is a flake powder. Flake is usually less quite a bit dense than ball.

    For finding the most similar standard powder, it would help to get the density of CBI and the density of similar burn rate powders.
    I'm pretty sure CBI is a single base flake powder.

    Edit: unless you know it isn't a flake powder?
    Last edited by swheeler; 09-14-2020 at 08:31 PM.
    Hell, I was there!

  11. #11
    Boolit Master
    Join Date
    Jul 2015
    Posts
    680
    My assumption came from a quick glance at the photo provided by the seller. A second look noted that the picture is probably a large drum and not a small canister. What I though were small grains is probably a typical flake. My bad.

    As far as density, I was surprised to find that Herco (the lowest density powder in my list) would have only a 75% load density with 4.6 grs, a 115 gr Hornady RN and a 1.169 OAL. CBI would have to be much less dense to be "just shy of compressed" (post 1) with 4.6 gr (post 4).

    At this point I am guessing that the post 1 / post 4 load was either not close to 100% or was not a 115 gr at 1.169 OAL. If CBI is not significantly less dense, it is looking more like Herco gets the nod as a pretty close standard powder.

    On the other hand, if it is a lot less dense than Herco, the 357 mag load data may be showing a compressed charge at 9 gr. If this is the case, there is really no close standard equivalent. Herco data could still be used as a guide, but use extra caution as you start to go over 95% load density.

  12. #12
    Boolit Grand Master

    swheeler's Avatar
    Join Date
    Mar 2005
    Location
    Montana
    Posts
    5,275
    I wonder if there is a way to find out who made the powder, or if the igniter packs were made and sold to the govt for the 155 Howitzer. From memory the data looks similar to Alcan AL5 in 357, but that was a long time ago it was made .
    Hell, I was there!

  13. #13
    Boolit Buddy
    Join Date
    Feb 2009
    Location
    Oklahoma
    Posts
    312
    The photo reminds of Maxxam Csb-1 or 1m, it’s similar in color and is a flake. I think Csb-1 is faster than Herco though.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check