Q: Will a smaller projectile result in better efficiency?
A: No, a smaller projectile won't magnetically couple with the coil as well as a larger projectile will, and won't absorb as much energy. So a small projectile will actually carry much less energy and probably even travel at a lower speed.

Q: Will rifling in the barrel improve accuracy?
A: No- Rifling depends on the bullet expanding within the barrel, which doesn't happen with a magnetically propelled projectile at these speeds.

Q: Will you sell it?
A: You can buy my latest coilgun at [ Ссылка ]

Q: Will you post plans?
A: I can't share plans, but I'm willing to point you in the right direction. It's not that hard- I started this project with zero experience with electronics. It takes more patience than anything else.

Q: Will multiple coil stages improve power/efficiency?
A: Yes! I only have one stage on this design for the sake of simplicity.

Q: You should shoot it into some meat!
A: That's a waste of a potential sandwich

Q: What are the songs in this video?
A: In order: Kick It, Rally, and Behemoths from Mechwarrior 4, Invaders by Excision and Datsik, Still Alive by Jonathan Coulton and GlaDOS

Q: How do you claim 1.25kJ of energy?
A: Some websites which feature my gun state that I am delivering as much energy to target as a .45ACP. They are incorrect, either because they didn't read my description or maybe they just didn't fully understand it. 1.25kJ is the electrical energy stored in the capacitors, according to the equation E = 0.5*C*V^2. For this gun, C=15600uF and V=400V, thus E = 1248J. One of the main drawbacks for coilguns is poor efficiency, which, for single-stage hobbyist designs (like mine) is limited to about 3%. The efficiency of the CG-33 is 2.02%, so the kinetic energy (delivered to target by projectile) is about 25J, which is much more than a bb gun but much less than a real gun.

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