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Unique powder volume

Discussion in 'Reloading' started by 2hand, Jul 30, 2012.

  1. 2hand

    2hand

    15
    0
    Mar 18, 2012
    Loaded up some test rounds with Unique and I was surprised how full the case was @ 6.8 gr. for a .40 s&w (max was 8 gr).

    Are compressed loads more likely with such a high volume powder?

    155gr Berrys over 6.8-7.4 gr. Unique. OAL 1.12"
     
  2. country85

    country85

    249
    0
    Jan 14, 2012
    Greentown, IN
    I've never loaded for 40, but as long as you follow your manual you should be good. what manual are you using? I load unique in my 44 mag and I use 8.2. I don't see how and the hell you could fit 8 grains in a 40 case. Just follow the golden rule, start light and work your way up. It's better to have to use a wooden dowel to beat a squib bullet out of your barrel then blowing your gun or your self up. I'll see if I have any 40 data in my lyman book
     


  3. country85

    country85

    249
    0
    Jan 14, 2012
    Greentown, IN
    From what I've seen in my books you should be good, Like I said I have never loaded 40 before but I saw some loads above what you mentioned you loaded. Just make sure your scale's are calibrated and have fun. Unique is a fairly forgiving powder So you shouldn't have to worry as long as you stay just shy of the max loads
     
  4. F106 Fan

    F106 Fan

    8,033
    268
    Oct 19, 2011
    Max is 8.0 gr for a jacketed bullet. In the case of a plated bullet (Berry's, et al), max is reduced to mid-range for a jacketed bullet. Unfortunately, the Alliant site is useless in this regard, they only provide a max and the statement that the starting charge should be 10% less.

    Speer #14 shows 7.2 gr to 8.0 gr of Unique for a 155 gr GDHP or TMJ FN. So, somewhere around 7.6 gr (mid range) would be the max if you are following along with Berry's recommendations.

    Other manuals may have different data.

    The fact that you are loading between 6.8 and 7.4 grains seems about right. Just be certain you know that your weigh scale is accurate (I use RCBS check weights) and load some up! I probably wouldn't go over 7.4 unless there was some compelling reason.

    Richard
     
  5. 2hand

    2hand

    15
    0
    Mar 18, 2012
  6. 2hand

    2hand

    15
    0
    Mar 18, 2012
    The data was out of the Speer manual and the Alliant site.

    Thanks Richard, that's the mentality I was going on. Just seeing 6.8 in the case was cause for concern. We'll see.
     
  7. 2hand

    2hand

    15
    0
    Mar 18, 2012
    The data was out of the Speer manual and the Alliant site.

    Thanks Richard, that's the mentality I was going on. Just seeing 6.8 in the case was cause for concern. We'll see.
     
  8. Zombie Steve

    Zombie Steve Decap Pin Killa

    18,083
    18
    May 31, 2007
    Old Colorado City
    Its bulkiness is part of the reason it gets recommended for newbies... easier to spot a double charge.


    Try loading it in 9mm. You'll be brimmin' over. :supergrin:
     
  9. country85

    country85

    249
    0
    Jan 14, 2012
    Greentown, IN
    Literally !!!!! Got to be careful in 44 mag though cause you can probably fit a triple charge in there! :rofl:
     
  10. Zombie Steve

    Zombie Steve Decap Pin Killa

    18,083
    18
    May 31, 2007
    Old Colorado City
    It will just get lost in a .45 Colt case if you ain't careful...
     
  11. country85

    country85

    249
    0
    Jan 14, 2012
    Greentown, IN
    :rofl: Ever tried to load 45-70 with unique? I had to send in a search and rescue team!!!
     
  12. fredj338

    fredj338

    21,699
    917
    Dec 22, 2004
    so.cal.
    Yep, used to shoot CAS w/ my 45-70 back in the day when it was allowed. I would load 45-70 w/ 9gr under a 300gr LFP. I had to put a tuft of Kapok into the case as an over powder wad.
    Unique is bulky, one reason I like it. It stands some compression well, in most 9mm loads, it's going to be compressed.
     
    Last edited: Jul 30, 2012