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**TC Fire Storm Loads**

Discussion in 'Blackpowder' started by Drgnarr, Apr 12, 2009.

  1. Drgnarr

    Drgnarr New Member

    :confused:I am new to the black powder think and recently picked up a 50cal TC Fire Storm.

    My buddies that hunt with flintlocks swear by shooting fff, rather than ff, why, not sure, cleaner burning?, but any way that is what I bought, fff for shooting and ffff for the pan.

    I am shooting round balls, I am assuming they are all around 175-180 grains for 50cal?

    Anyone have any experience with loads for the TC fire storm with FFF black powder and round balls.

    I shot 10 rounds or so with 80 grains and also with 90 grains. The 80 grain seemed to shoot tighter groups, but is that enough poop to drop a deer at 100 yards?
  2. arcticap

    arcticap Well-Known Member

    fffg is cleaner burning and produces higher velocity. It compresses better, requires less loading effort and may ignite faster too. But it may not always shoot as accurately as ffg. Only testing loads would determine that.
    According to the TC sidelock manual, the velocity difference between 80 and 90 grains of powder is only about 100 fps.
    Since fffg powder is about equal to a 10% greater volume of ffg, your fffg loads are more like the equivalent of loading 90 and 100 grains of ffg powder. That's certainly potent enough to kill a deer since many have been killed successfully at even longer ranges. But that never means that the deer will necessarily "drop". A deer usually needs to be hit in the heart or in a part of its central nervous system for that to occur with a muzzle loader. And a round ball may not pass clean through a deer depending on what part it hits, especially at longer range. The ball may come to a stop against the hide on the far side. However, pure lead balls are known for having excellent expansion and causing less eatible meat damage as it simply plows through tissue compared to the hydrostatic shock of the high power smokeless calibers. And the round ball does have a relatively larger frontal area which does creates an effective lethal wound channel.

    See page 75 for velocities:

    Last edited: Apr 12, 2009
  3. Drgnarr

    Drgnarr New Member

    FFF & FF difference?

    You say about 10%.

    So, your saying that 80 grains of FFF is = 88 grains of FF

    And likewise, 90 grain of FFF = 99 grain of FF

    Approx of course, but is this what you are getting at?

    I was told the difference was more but beats the hell out of me!:confused:
  4. arcticap

    arcticap Well-Known Member

    Yes, I usually compensate the load by 10% when using Pyrodex P vs. Pyrodex RS. There is less air space between the granules of fffg which causes it to occupy less volume than the equivalent amount of ffg [i.e. the load by weight].
    Whether that amount of difference is actually 7% or 10%, I'm not exactly sure since every powder has a slightly different granule size. And the size of the granules and percentage of fines (fffg & ffffg) can even vary among different containers and batches of the same brand of black powder.
    Last edited: Apr 13, 2009
  5. arcticap

    arcticap Well-Known Member

    Hodgdon's loading data comparing equal volume loads of Pyrodex RS vs. P shows that there's not that much difference between their velocities. Certainly not 10%, and in some case only about 5 - 6% [3.8% - 5.4%] with some selected loads. So I stand corrected. When measured by velocity, the actual difference between Pyrodex P and RS from rifles is only about 5%. And with some maximum loads the recorded velocity difference is almost zero. However one .45 caliber load comparing 70 grains does reveal a velocity difference of 14.9%! :what:
    That velocity difference may generally be greater when fired from revolvers due to their much shorter barrels though.
    Also I don't have data about the actual velocity differences between black powder granulations.

    Last edited: Apr 13, 2009

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