So what does it all mean? These are some initial thoughts, there is a lot of data to look at and a lot of observations which can be made. For shooters, unless you change the barrel on your gun to have a much faster twist rate, you will only be able to use much lighter and shorter slugs in tin than you could in lead. To avoid the new tin slugs travelling at supersonic speeds, you will also have to reduce the muzzle energy of your gun. Tin slugs of the same mass as some lead slugs can be used, but they may be too long to fit in the magazine and will need an even higher twist rate.
Great read, I have been experimenting with cast tin and lead slugs, your calculations look to be in the ballpark with my initial test results. Inspired me to go cast up some of my latest .177 slugs in tin for my next range experiment. I still have to do further testing in the larger calibers that I first experimented with over a year ago, so many options so little time Have you run the numbers for a BBT say in .22, I have had decent results with them in tin with my custom Airforce Escape UL, worth more testing IMO.
There is no no viable substitute for lead, and there never will be. Tin is harder and too light, and way too expensive. Copper and brass way too hard. So we end up with nothing or something expensive and not as working. Sabots and tungsten maybe. That works in my guns but I don't think the authorities want us to use armor piercing projectile? These green folk have no idea what is really harmful to people, or the environment, or do they? Lead is so heavy that it sinks to the bottom if in water, but plastic in the other hand. Marko
Tungsten is too expensive too. Instead of shooting expensive tungsten a friend of mine loads pea gravel in his PB shotgun shells to comply with waterfowl hunting laws. Gets a new barrel when it wears out. It's cheaper even when you figure in a new barrel. And that's the craziness of these laws too.
Quote from: BigBird on September 12, 2021, 01:10:50 PMTungsten is too expensive too. Instead of shooting expensive tungsten a friend of mine loads pea gravel in his PB shotgun shells to comply with waterfowl hunting laws. Gets a new barrel when it wears out. It's cheaper even when you figure in a new barrel. And that's the craziness of these laws too.I seem to remember from the tank ranges that there are pollution problems with tungsten as well. When I was looking at using mini tank ammunition type long rods for sniper ammunition, I asked some of the management to find out if it was allowed, but I was retired before there was any answer.
Heavy going, but insightful!How do I vote this thread up?
I thought that a longer slug provides a better lever for the correcting moment, to force the projectile to follow its projectile with less yaw?