Best find new freind.
Hey There.
#1 Be a good idea to here what these two have already said. That is a BLACK
POWDER gun. Read your manual. Your freind has no idea what he is talking about.
#2 I have used the Encore for years now and have many post in here on the accuracy of these rifles. Mine is a for real Hole ragger.
#3 if by some stupid chance someone does post that the load your freind sugested is safe, he is wrong also. AND not to be trusted.
I have heard many different concocktions on this forum. For the most part all were safe. But this is not. PSI curve. This happens in the first few inches of your barrel. Just in front of your face. What if by some weird mistake you put a double charge of that in there ? The barrel splits wide open , the scope flys apart and peices hit you and any one near you in the face and other maybe important places. Play with fire and you will get burned.
I'm going to risk some arguement here. Get rid of the freind, get rid of the power belts. The 300 gr. bullets always seem to be the most accurate in these rifels. My load is 80 gr, of Pyrodex "P" SAFE........
70 to 100 grains of BP will be the zone you need. Your gun may need cleaning between shots. Maybe not. That part is up to the gun , Not you.
If the bore is on the loose side , you may not have to clean between shots. If the bore is on the tight side , you will have to clean between shots.
Proper testing is the only way you will determine this. Keep the flash hole clean. I have heard things like this before. The Encore is one of the most accurate rifles made. PERIOD. Many on here and else where report 1/2" groups at 100 yards. The power belts have proved not to be target grade.
The T/C shock waves are . The Hornady SST/ML 300s are. Get picky.
If "YOU" can shoot. There is no reason this rifle will not throw 1" or less at 100. Things must be right, scope tight, loads right, etc. Test it right and it will perform. Have fun. But Be much safer then your freind is.