Well I have a though for you. The 50/40 is what I start all young beginners with a 200 gr bullet and 70 grains to start then add as much as they are comfortable with.
I use the 200 gr Shock Wave that 40 caliber with a 50 caliber sabot. This bullet has done real well on dear and boar and is very accurate in most guns with any load from 70 to 120 grains.
70 grains will reach 75 yds if the shooter is accurate enough 90 grains will reach 150 with no trouble the problem is you have to limit them to the distance they are capable of making a good hit at.