Calculate Twist Rate, Bullet Length and Muzzel Velocity for optimum bullet stability

[Snidely70431]

https://www.tmtpages.com/twistrate.htm

The above link will take you to an article with a calculator with which one can figure out the best bullet length for a given twist rate, groove diameter, and velocity. Actually, any of the variables can be calculated.



This is merely a picture of the page, it does not actually do the calculations.

 

[jmr40]

Berger has a good one that is easy to use too.

Twist Rate Stability Calculator | Berger Bullets

If you're using Berger bullets you can simply select one from their drop-down menu. If not a Berger bullet you'll need to measure bullet length to enter that data. Or just use a similar bullet weight from the list of Berger bullets.

 

[Snidely70431]

Berger has a good one that is easy to use too.

Twist Rate Stability Calculator | Berger Bullets

If you're using Berger bullets you can simply select one from their drop-down menu. If not a Berger bullet you'll need to measure bullet length to enter that data. Or just use a similar bullet weight from the list of Berger bullets.

I cast my own bullets and then paper patch them, using my take on the Ideal Cylindrical Adjustable Cylindrical Mold.
https://www.modernmuzzleloader.com/...-of-ideal-cylindrical-adjustable-mould.34406/ .
I can cast 50 caliber bullets from about 250 grains to over 700 grains using the same mold. Paper patching using standard computer paper adds about 12/1000 to the diameter of the bullet. I then lubricate and make it water resistant using a mixture of beeswax, graphite and a little Vaseline. The paper patching has the effect of polishing the bore with every shot.