i have a rem 700 mtn. rifle 22" tube with with a 2 " muzzle break. its for my kid. i am looking for info with 140 gr. beregers, accubonds and ballistic tips. powders are h4831 sc, h4350, imr 4350 and imr 4831. gun doesnt like rl 19 allready tried. any info would be great.