Author Topic: My First  (Read 1291 times)

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Offline Frank Rathmell

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My First
« on: April 12, 2013, 05:33:27 PM »
My first black powder project. it came out pretty nice ,but I wish I had foound this site a few weeks ago.
1.710 bore .030 over a golf ball.

Offline Frank Rathmell

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Re: My First
« Reply #1 on: April 12, 2013, 05:35:21 PM »
#2

Offline Zulu

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Re: My First
« Reply #2 on: April 13, 2013, 02:47:33 AM »
Looks nice!  I bet you could use some handles on that thing.
Zulu
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Offline Ex 49'er

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Re: My First
« Reply #3 on: April 13, 2013, 05:31:56 AM »
Good looking mortar. Is it stainless?
When you're walking on eggs; don't hop!!

Offline Frank Rathmell

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Re: My First
« Reply #4 on: April 13, 2013, 10:05:54 AM »
Yes it could use handles. It's not stainless it's 1018.

Shot it off for the first time today.  The powder chamber is 1.25 dia x 1.25 deep. It takes 400 grainsFFFg to fill the chamber to the top.  Great BANG! but no golf ball in sight. 100 grains of FFFg toped with a ball of aluminum foil to fill the chamber, was sending a golf ball,with a pretty good report, about 120 to 130 yards shot at a 60 deg angle.

Now I want a bigger one 12 pounder maybee.

Frank

Online JeffG

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Re: My First
« Reply #5 on: April 13, 2013, 11:31:16 AM »
Very nice!! NICE WORK!
Young guys should hang out with old guys; old guys know stuff

Offline Cannoneer

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Re: My First
« Reply #6 on: April 13, 2013, 10:50:12 PM »
That is a fine first effort, Frank; welcome to the board.
RIP John. While on vacation July 4th 2013 in northern Wisconsin, he was ATVing with family and pulled ahead of everyone and took off at break-neck speed without a helmet. He lost control.....hit a tree....and the tree won.  He died instantly.

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Offline Ex 49'er

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Re: My First
« Reply #7 on: April 14, 2013, 05:13:05 AM »
Now I want a bigger one 12 pounder maybee.
Frank

Welcome to the addiction. You have been assimilated!
When you're walking on eggs; don't hop!!

Offline Double D

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Re: My First
« Reply #8 on: April 14, 2013, 06:11:38 AM »
Yes it could use handles. It's not stainless it's 1018.

Shot it off for the first time today.  The powder chamber is 1.25 dia x 1.25 deep. It takes 400 grainsFFFg to fill the chamber to the top.  Great BANG! but no golf ball in sight. 100 grains of FFFg toped with a ball of aluminum foil to fill the chamber, was sending a golf ball,with a pretty good report, about 120 to 130 yards shot at a 60 deg angle.

Now I want a bigger one 12 pounder maybee.

Frank

Before you go bigger you need to learn the  one  you have  and then maybe move up to pop can size before you take a jump.  I have a 6 pounder and it is just right on the edge of requiring a crew to set up and shoot.

Mortar barrel angle should be 45 degrees. Range  is controlled by size of powder charge.  400 grains in a golf ball mortar is a waste of powder.  Half the fun of shooting the mortar is seeing the ball fly.  If you can;t see the ball in flight why not jsut shoot blanks.

Reduce your charge to 25 grains and start there.  Work up 5 grs of powder at a time and adjust until you are dropping the ball about 100 yards.  Keep notes on how far each powder charge sends the ball. Set a target out at 100 yards and see if you can hit it.  That's tough to do, but a lot of fun.

The next step is to order steel or zinc golf balls and shoot those.  You will get a much greater satisfaction for shooting those than golf balls.  Go to  the GBO cannon classified and you will find a listing both zinc and steel balls.  The Steel balls are cheaper but were temporarily sold out.  The may be back in stock by now.  I prefer zinc.  Zinc is softer and doesn't bounce around and make sparks like the carbon steel balls do.  The plus side to the metal ball, is you can go pick them up and shoot them again. i also have some concern about barrel wear with the steel. 

One last thing, start planning on coming to  Montana in 2015.





Offline Frank Rathmell

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Re: My First
« Reply #9 on: April 16, 2013, 01:19:46 PM »
Quote
Before you go bigger you need to learn the  one  you have  and then maybe move up to pop can size before you take a jump.
I plan on shooting and getting to know my mortar, but I always have to have somthing on the go in shop. Most of my shop time is spent building steam whistles,steam sirens and model steam and gas engines.
Quote
The next step is to order steel or zinc golf balls and shoot those.
I was thinking about getting a mold and making lead balls. I always keep a good supply of wheel weights on hand for hard cast rifle bullets for my 45-70 and 45-110 Shilo sharps. I have nearly a ton of ingots of prossesed wheel weight lead.
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One last thing, start planning on coming to  Montana in 2015.
What's happening in Montana 2015?
Frank
 
 

Offline Double D

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Re: My First
« Reply #10 on: April 16, 2013, 02:15:23 PM »
Once you go above one inch Lead is not recommend for round balls.  They are too heavy and they are too easily deformed and can hang up in the bore.    The  heavier weight of lead  requires more powder than is needed and increases recoil which is hard on equipment.   Lead has to be recast after every shot.  The Steel and and Zinc balls can be picked up and shot again and again.

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Offline harleyboy61

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Re: My First
« Reply #11 on: April 19, 2013, 03:43:16 PM »
Very Nice
I have just finished my first too and will post some pictures and details
HB