Powder compression

[powderburner]

I have a pic of my friend at night with the 110 and the muzzle flash is 12 ft,long ,this with a heavy compressed load , it burned clean.but the barrel would get hot to the muzzle ..
an uncompressed load will shoot as clean with the right bullet ,wad stack but the barrel only gets hot to the rear sight, I think it has more to do with the seal of the bullet in the bore and the amt of pressure built than anything else/