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Hi Thanks for the tips. The homepage was quite intriguing I have always been interested in the earliest forms of firearms. I am tempted to make one of that myself as the next project. Actually I have already tested the experiment you linked to for acquiring the bullet speed. It was in...

First of what velocity should a lead bullet that is 13 mm in diameter and weights about 15 grams have to have good penetration and stopping power? According to my calculations 350 m/s should be enough. Could a black powder handgun accomplish this? And how can I measure the speed of the...

Well how long should one twist be for my purpose, 45cm for one twist? What about the width of the grooves? I don't mean the depth just the width is there any standard for the, because you can cut the grooves with different width.

I don't get it I have looked up two established barrel makers' specifications. Green Mountain muzzleloader barrels are made to the following specifications Each barrel has eight lands and grooves. Grooves cut .010 to .012” deep, depending on caliber. Twist is 1 turn in 48 inches for .32...

Hi boys! I am working on project that is about building a muzzle loading large calibre gun that fires lead bullets. The calibre is 13mm and the length of the gun is about 17cm. I have a question about how the grooving should be done. 1) What twist rate should there be? 3 turn 4 turns...