[TowerTalk] Grounding/Bonding Lessons Learned

[Patrick Greenlee]

In the olden days (30-40 years ago) you walked into a gun store and 
bought black powder in one lb cans in whatever grain size (typically 2-3 
f and up to 5f.  Now there is a modern substitute which is used in the 
same quantities but is not "REAL" black powder and doesn't have a recipe 
for making it which is 75% saltpeter (potassium nitrate), 15% charcoal, 
AND 10% sulfur (there are other variations in common use by DIY folks.)

For the purpose of igniting CadWeld shots you can leave out the sulfur 
(stinks a lot) and use 100 parts saltpeter and 24 parts charcoal. You 
want fine powder 4f or 5f.  Do not put the ingredients together in a 
mortar and pestle or other grinding arrangement.  You can grind the 
ingredients separately with no worries and then mix them but do  not 
grind the mixture if you want to keep your eyes, fingers, etc in good 
working order.

I have never used Pyrodex black powder substitute (available at Walmart 
stores with gun counters and other vendors) so am not qualified to 
comment on the efficacy of using Pyrodex for igniting anything much less 
Cadweld shots.

Patrick   NJ5G

On 3/30/2015 9:52 AM, Keith Dutson wrote:
> Can says black powder for black powder firearms., imported from Brazil to
> Arlington, Texas.  I could find no reference to Pyrodex.  4f is used in the
> flash pan, not the muzzle.  I am sure it is the real thing based on instant
> ignition and burn time.
>
> 73, Keith NM5G
>
> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
> Patrick Greenlee
> Sent: Monday, March 30, 2015 6:57 AM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] Grounding/Bonding Lessons Learned
>
> Cool, clever substitute.  Pyrodex or the real thing?  I still have part of a
> one pound can of real 4F.
>
> On 3/29/2015 8:37 PM, Keith Dutson wrote:
>
> Patrick   NJ5G
>> Thanks for the great tip.  I will be doing 12 this summer, and just
>> happen to have a pound of Elephant FFFFg.
>>
>> 73, Keith NM5G
>>
>> -----Original Message-----
>> From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
>> RMorris
>> Sent: Sunday, March 29, 2015 12:17 PM
>> Cc: Towertalk Reflector
>> Subject: Re: [TowerTalk] Grounding/Bonding Lessons Learned
>>
>>
>> On Mar 29, 2015, at 10:09 AM, Mike Fahmie via TowerTalk wrote:
>>
>>> I had a similar problem igniting a Cadweld that had lost its ignition
>> powder.
>>
>> Needing to do 99, on a damp day, a little 2F black powder from the
>> flintlock shooting kit got them to work every time.
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