Re: [Emc-users] Flash hole drill sizes for BP with 209 ignition?

[John T. <bj...@gm...>]

Some of the children I play with have a cannon. Ricky's I did the iron 
work on a few years back. It is a 2 1/4 bore cannon. Ray bought the same 
cannon barrel that I did but has not finished his yet. George has a 1 
1/2" bore navel cannon but it is not finished either... and he has been 
working on it for years. In addition to the cannons Ray and George has a 
Coehorn Mortar that is finished and we shoot them regularly. You can see 
Ray's mortar in the video.

John

On 5/24/2012 8:18 AM, dave wrote:
> On Thu, 24 May 2012 06:03:02 -0500
> John Thornton<bj...@gm...>  wrote:
>
>> BP Cannon, now your talking!
>>
>> I'm building a 1/2 scale civil war 6 pounder and it is done enough to
>> fire and the report is most satisfying.
>>
>> http://gnipsel.com/cannon/cannon.xhtml
> Wow! Making a whole battery? Good pictures and really nice work.
>
> Dave
>> John
>>
>> On 5/23/2012 10:36 PM, Kent A. Reed wrote:
>>> On 5/23/2012 11:03 PM, gene heskett wrote:
>>>> On Wednesday, May 23, 2012 10:42:23 PM Kent A. Reed did opine:
>>>>
>>>>> On 5/23/2012 9:42 PM, gene heskett wrote:
>>>>>> BP nipples using #209 primer
>>>>> That certainly was a "shot in the dark" given the nature of this
>>>>> group, Gene. I'd think there are gunsmithing and shooting groups
>>>>> online that are better able to answer.
>>>>>
>>>>> Just for grins, I stuck the above line into Google and got back
>>>>> pages of hits. Most, I'm sure, aren't the specific answer to your
>>>>> specific question, but it shows there's lots else is out there on
>>>>> sites with root names like knightrifles.com, gunloads.com,
>>>>> thehighroad.org, mlagb.com, tcarms.com, ammosmith.com,
>>>>> thefiringline.com, huntingnet.com.
>>>>>
>>>>> Good luck.
>>>> So did I Kent (Google that is), lots of hits, but mostly SWAG's.
>>>> I am inclined to give the 5 hole design a 2nd try, but with #74
>>>> holes instead of #68's, as that seems to have all the quacks and
>>>> waddles of a duck called too much.  We'll see as soon as the
>>>> weather clears and its not the weekend. There is a small, very old
>>>> but well maintained, cemetery across the parking lot from the
>>>> range and a notice hanging on a roof support post that it will be
>>>> closed Sunday and Monday out of respect for the cemetery visitors.
>>>>
>>>> One thing that seems to run a common thread is the requirement for
>>>> a rigid, low headspace support behind the #209 primer, like the
>>>> Omega has. It closes on the primer, holding it solidly with no
>>>> headspace at all.  Anything that allows primer gasses another exit
>>>> besides the flash hole(s) seems to be considered very poor form.
>>>> And this one will need a latch designed to catch and hold the
>>>> striker in the fired position before that no leakage condition
>>>> will be a reality.
>>>>
>>>> As for the blowback, I think the latch is the best solution, short
>>>> of declaring this particular design a total loss.  I've got too
>>>> much time in carving not one, but 2 stocks for it over the years
>>>> I've had it, and I like my artwork.  Maple, thumbhole style,
>>>> cherry grip&    tip caps, thick recoil pad, the obvious giveaway is
>>>> the BP ramrod hanging under the barrel, otherwise it looks like a
>>>> pretty modern gun.
>>>>
>>>> Cheers, Gene
>>> And of course Dave did answer your query, which proves once again
>>> the breadth of knowledge in this group.
>>>
>>> I never had a hankering for BP long guns but there sure are a lot of
>>> enthusiasts in this area of Western MD, Northern VA, and WV.
>>> There's no shortage of volunteers for any battlefield reenactment.
>>>
>>> The latch sounds like a good idea (I hate thinking about anything,
>>> striker, gas, or otherwise, kicking toward your face) but I have no
>>> idea how hard it will be to implement.
>>>
>>> Now BP cannons I could see myself getting involved with...kind of an
>>> East Coast mythbuster...making smoke and noise in equal quantities
>>> and bouncing cannonballs through peoples' backdoors. Heck, they
>>> even get paid to do it.
>>>
>>> Regards,
>>> Kent
>>>
>>>
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