I have a relatively ok swing speed. 115-117 mph with driver. 95 mph with 6 iron (188  carry) and 87 with PW (153 carry). 
I am a relatively new golfer been playing for 10 months. I feel like i cant consistently delivers the driver therefore if I am lucky and hit one good its 300 yards but normally only about 220 - 240. Are there any drill that can help me deliver the same impact conditions each time? 
Thanks For Your Helps.