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The Water Cooler
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How do you buy a cannon?
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<blockquote data-quote="TheDoubleD" data-source="post: 3599766" data-attributes="member: 43754"><p>I have an offer from several fellows here to shoot on their property. Now if I can just get the moon and stars to align, get a new tow vehicle, finish painting and reassembling the bowling ball mortar, and weather is safe from fire/floods, I want to haul the two big guns out and shoot. Not sure if the fellows offering property are interested in making it an event however.</p><p></p><p>The little golf ball bore gun and smaller would be just fine on a 100 yard rifle range, if I can find someone who will discuss this with me.</p><p></p><p>Thousand yards and a cup of black powder.</p><p></p><p>[ATTACH=full]211578[/ATTACH]</p><p></p><p>First cups are units of measure for making cookies and cakes, not loading black powder-unless you treat it like volumetric powder loading tool.</p><p></p><p>In this case one slightly heaped cup of FA grade black powder weighs 8.7 ounces. That is a healthy 1/2 pound of powder and will get your bowling a long way down range. I would not fire that charge in a pressure vessel without a chamber. Looking back over my notes 8 ounces of powder is a 650 yard charge. Standing on the firing line and looking down range, 650 yards is a long ways down there.</p><p></p><p>We verify distance 3 ways. First using Google Earth measure function. Look on the map and mark your firing point and impact point. This gets us pretty close. Second we use a conventional GPS to mark firing position and impact point. I find an on line calculator and do the math with these numbers. I also plug the GPS readings into Google Earth. The third way is I take photo's of the firing point and impact point. I open up the metadata of the pictures and extract the GPS coordinates and plug that data into the online app and Google earth. None of these measurements will be the same, but they will be very close-15-20 yards. This is far more accurate the using a the Mark 1 Eyeball and a WAG.</p><p></p><p>There is another method, that can be surprisingly accurate, that I used way back in olden days pre GPS when we still had rotary dial phones and telephone had to be hooked to a wire to work. Triangulation with a compass. Tedious but it worked. I don't do it that way any more.</p><p></p><p>A footnote here, the greater danger here is the wife finding out I used her cup measure to take that picture.</p></blockquote><p></p>
[QUOTE="TheDoubleD, post: 3599766, member: 43754"] I have an offer from several fellows here to shoot on their property. Now if I can just get the moon and stars to align, get a new tow vehicle, finish painting and reassembling the bowling ball mortar, and weather is safe from fire/floods, I want to haul the two big guns out and shoot. Not sure if the fellows offering property are interested in making it an event however. The little golf ball bore gun and smaller would be just fine on a 100 yard rifle range, if I can find someone who will discuss this with me. Thousand yards and a cup of black powder. [ATTACH type="full" alt="8oz.jpg"]211578[/ATTACH] First cups are units of measure for making cookies and cakes, not loading black powder-unless you treat it like volumetric powder loading tool. In this case one slightly heaped cup of FA grade black powder weighs 8.7 ounces. That is a healthy 1/2 pound of powder and will get your bowling a long way down range. I would not fire that charge in a pressure vessel without a chamber. Looking back over my notes 8 ounces of powder is a 650 yard charge. Standing on the firing line and looking down range, 650 yards is a long ways down there. We verify distance 3 ways. First using Google Earth measure function. Look on the map and mark your firing point and impact point. This gets us pretty close. Second we use a conventional GPS to mark firing position and impact point. I find an on line calculator and do the math with these numbers. I also plug the GPS readings into Google Earth. The third way is I take photo's of the firing point and impact point. I open up the metadata of the pictures and extract the GPS coordinates and plug that data into the online app and Google earth. None of these measurements will be the same, but they will be very close-15-20 yards. This is far more accurate the using a the Mark 1 Eyeball and a WAG. There is another method, that can be surprisingly accurate, that I used way back in olden days pre GPS when we still had rotary dial phones and telephone had to be hooked to a wire to work. Triangulation with a compass. Tedious but it worked. I don't do it that way any more. A footnote here, the greater danger here is the wife finding out I used her cup measure to take that picture. [/QUOTE]
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