It's always more prudent to go back to the manufactuer or supplier. I have two sources on Pietta and both are a bit different and they came with the same Rem.??!!

Here is my general rule of thumb. Understand that this is just a starting point and you will have to put in some range time.

**On a long guns:**
The Min. is the caliber and the max is two times the caliber.

Download the Max on 777. So, on a .50cal. The min. is 50grns by volume and the Max is 100grns. by volume.

**On listed cap and ball revolvers:**
The Max is the caliber divided by two.

Here is what my Pieta literature says, using Pyrodex-P

**.36: 17Grns**.

**.44: 28grns.**
**Be Safe !!!**