RenoRick: Why does my initial shot out of bunkers always go for about 1/3 the actual distance?
Ok. For what it's worth, here's my take on bunker play, and yes, I'm talking about 30/40 mostly.
Since it's all different depending on what wedge and ball is in use, I recommend finding a hole with a large flattish green and bunkers. Get yourself into the bunker and first take a full shot with your highest lofted wedge, full backspin. Replay the shot so you can see what happened. How much height? (Clearing lip concerns.) How far was the carry? How much roll out? Don't use a mulligan unless you're rich. Just putt the ball back into the bunker.
Repeat for 90% 80% 70% 60% and 50%. (Below 50% seldom clears lip.) Take notes.
Now find a hole with a sloped green and bunkers on both sides. With the knowledge gained from above, see what effect shooting into an up/down slope has. Play around with spin if you like, though adding more to calculations to a problem is something I generally avoid.
Good Luck.