the biggest drawback I see in an airgun, is most swaged bullets have long bearing surfaces which equals friction which equals lower velocities.
When you say you can crank it down a little and it takes some more lead off, does it have bleed holes in the die?
Quote from: mackeral5 on March 20, 2021, 11:12:02 PMthe biggest drawback I see in an airgun, is most swaged bullets have long bearing surfaces which equals friction which equals lower velocities. More friction can equal a lesser velocity, true. Also air escaping around a looser slug can equal lesser velocities as well. There will always be a trade off between an airtight fit which allows more pressure to push the slug and a looser slug with less contact with the barrel but which allows more air to escape around it rather than push it. People try to slug their barrels to get an exact fit down to the thousandths of an inch when it is nearly impossible to craft a soft lead slug that exact. One way I plan on trying to overcome friction while ensuring an airtight fit is to powder coat the slugs so they are slippery and don't foul the barrel with lead.Quote from: sb327 on March 21, 2021, 12:46:14 AMWhen you say you can crank it down a little and it takes some more lead off, does it have bleed holes in the die? Indeed it does. Any excess lead comes out a small hole in the die looking like thin wire.So far I have only seen one man on YouTube who has made any videos of this particular device. They quality of the videos is not great, but the operation and explanation of the process is pretty decent. You can see a close up of the excess lead coming out at about the 7:30 mark in the video below