I am shooting 777. How will a cooler burningprimer help? Is the "drud" from plastic? If I go with a cooler burning primer, I am assuming, I will need more range time to adjust for accuracy?

My ramrod has a mark and I am able to seat the sabot at the same point consistently, it is just the last little bit that gets very hard.

I opogize for my ignorance. Thanks for the help