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Posted: 6/30/2018 3:20:40 PM EST
[#1]
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Fixing the canted sight plane will be a bitch though. Guns aren't built with parallel to bore sights. Quote HistoryQuoted:
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I guess your optic could have a pretty simple reticle, no BDC or Mildot necessary without gravity. |
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Posted: 6/30/2018 11:54:22 PM EST
[#2]
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Copper?! Copper gets a bronze medal when compared to silver! ETA, how much faster would projectiles be traveling since there isn’t Any atmosphere in-front of the bullet? Quote HistoryQuoted:
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Copper. Copper is some thermal energy sinking shit. Tomorrow I will make a video that shows how you can extinguish a candle flame with just a small coiled piece of scrap 14AWG salvaged from ordinary romex. ETA, how much faster would projectiles be traveling since there isn’t Any atmosphere in-front of the bullet? It might not increase the velocity. The vacuum in the bore ahead of the projectile creates less resistance for the projectile, but that will also alter the burn rate of the propellant. If the bullet jumps the lands earlier, and starts earlier down the bore, that increases the volume available to the burning propellant. It should reduce chamber pressure. Ideal velocities for a vacuum cartridge might be derived from different powders than a typical load for atmo. It could be faster, slower, or a wash. Needs to be tested (in my mind at least). |
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Posted: 7/1/2018 10:24:31 AM EST
[#3]
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Good question, and something I've wondered as well. I'm not aware of it ever having been tested. It might not increase the velocity. The vacuum in the bore ahead of the projectile creates less resistance for the projectile, but that will also alter the burn rate of the propellant. If the bullet jumps the lands earlier, and starts earlier down the bore, that increases the volume available to the burning propellant. It should reduce chamber pressure. Ideal velocities for a vacuum cartridge might be derived from different powders than a typical load for atmo. It could be faster, slower, or a wash. Needs to be tested (in my mind at least). Quote HistoryQuoted:
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Copper. Copper is some thermal energy sinking shit. Tomorrow I will make a video that shows how you can extinguish a candle flame with just a small coiled piece of scrap 14AWG salvaged from ordinary romex. ETA, how much faster would projectiles be traveling since there isn't Any atmosphere in-front of the bullet? It might not increase the velocity. The vacuum in the bore ahead of the projectile creates less resistance for the projectile, but that will also alter the burn rate of the propellant. If the bullet jumps the lands earlier, and starts earlier down the bore, that increases the volume available to the burning propellant. It should reduce chamber pressure. Ideal velocities for a vacuum cartridge might be derived from different powders than a typical load for atmo. It could be faster, slower, or a wash. Needs to be tested (in my mind at least). I doubt the difference between burn rates would be statistically relevant. Normal lot to lot or even round to round inconsistency would likely be greater. |
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Posted: 7/1/2018 10:28:15 AM EST
[#4]
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Smokeless powder contains it's own oxidizer, so it does not need atmospheric oxygen to burn. Quote HistoryQuoted:
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Will gunpowder even combust in a vacuum? |
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Posted: 7/1/2018 12:18:43 PM EST
[#5]
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Sight the optic exactly parallel to the bore. Then your offset is the same at all distances. A 1 or 2 inch offset won’t matter at all at any distance. Quote HistoryQuoted:
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I guess your optic could have a pretty simple reticle, no BDC or Mildot necessary without gravity. |
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Posted: 7/1/2018 12:19:30 PM EST
[#6]
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I see lasers as a high possibility Quote HistoryQuoted:
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Lever action rifle or revolver. Because most guns won't cycle properly in space. |
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Posted: 7/1/2018 12:23:25 PM EST
[#7]
Rail guns for the win
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Posted: 7/1/2018 12:29:47 PM EST
[#8]
In space no one can hear you scream??
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Posted: 7/1/2018 12:31:38 PM EST
[#9]
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Will gunpowder even combust in a vacuum? |
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Posted: 7/1/2018 12:39:23 PM EST
[#10]
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Rail guns for the win |
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Posted: 7/1/2018 2:41:27 PM EST
[#11]
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You missed my point. No one makes iron sights or optic mounts built to do that. Quote HistoryQuoted:
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I guess your optic could have a pretty simple reticle, no BDC or Mildot necessary without gravity. 
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Posted: 7/1/2018 4:11:38 PM EST
[#12]
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I guess your optic could have a pretty simple reticle, no BDC or Mildot necessary without gravity. |
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Posted: 7/1/2018 4:42:05 PM EST
[#13]
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You missed my point. No one makes iron sights or optic mounts built to do that. Quote HistoryQuoted:
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I guess your optic could have a pretty simple reticle, no BDC or Mildot necessary without gravity. My M96 .50bmg already (intentionally) has a parallel bore zero at the bottom of the range, but with the adjustable rings I could have parallel bore near the center if I wanted. Irons would simply require a different front sight height. It really isn’t much of an issue FWIW. |
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Posted: 7/1/2018 4:43:45 PM EST
[#14]
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As do most people that have never worked with lasers. Quote HistoryQuoted:
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Lever action rifle or revolver. Because most guns won't cycle properly in space. |
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