Hi
I've tried a lot.
No wads, can give a bad burn with bad sound,
with wads, get a better combustion and better bang.
The reason why I often use the flour is that it is easy to pour in.
I have good results using the isolation rocwall
Of course, you will get higher pressure, which provides higher sound.
But a little warning.
Use of wet paper, then the weight will be high, and very high pressure as a result.
I do not like to see them filling barrel with a wet paper without the control weight,
that's when accidents can happen.
Oyvind