Next; fill with the smoke powder mixture to the end of the casing and tamp down with a dowel the same size as the inside of the engine. (You can first start packing using the pencil, In order to avoid scrunching the fuse.) Fill to the top again and tamp in. We have used either a vise or a hammer in order to Insure that the mix is tightly packed, without a single mishap.Repeat this until there is about I A" distance left to the end of the case. Note: depending upon a number of variables, which Include the exact composition of your mix, your ability to construct them and local weather/atmospheric conditions, your grenades may work better left relatively loose, or rammed down tight; so a bit of experimentation is in order here.
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