been playing with the 410 loads and have a question for the more knowledgable, using a recipe from BPI, using everything the recipe says except changed the hulls and primers from chedite to remington hulls and winchester primers, lilgun powder at 18grains.
using 3 balls of 000 which is what the recipe uses, I'm getting 1525 for fps and the recipe says it should be 1540 so should be all good
change to 3 balls of 0000 and my fps drops to 1450. i can understand slightly heavier load so it would be slower but does this equate to higher pressure, not seeing any unburnt powder and wishing I had a pressure trace system about now. the load does seem less stout than the 000 load.
any thoughts, safe load or not.