SteveBurton
Formerly 'Jackmonkey'
You are trying to accomplish 2 different things with the same equipment(bags). If you are working up a load and verifying accuracy/precision, you want the mostest, steadiest, rock solidest platform so that you don't affect the rifle when it goes bang. For that I would recommend a heavy bag front and rear. Doesn't really matter which brand or model you buy, just make sure it has a good heavy fill and the rifle doesn't move once you nestle it in there. You can also use a quality bipod (read as NOT Caldwell) but it will introduce more movement if you aren't careful. Also pay attention to what point on your rifle you have in contact with the bag. Make sure you aren't introducing any torque to your stock and put it in the same spot for every shot.
If you are practicing for hunting, I would get off of the bench and shoot prone with a bipod and a good rear bag. You could go with a Hunters Wedge for a solid rear bag or something like a Waxed Woobie Bag or sock to allow small changes with your off hand. I would also recommend practicing offhand, kneeling and sitting for shots closer than 200 yards. Those shots typically present themselves quickly and you may not have time to setup.
As a side note, get into PRS shooting. I can't say enough about how my shooting has improved by doing matches, and it's fun.
If you are practicing for hunting, I would get off of the bench and shoot prone with a bipod and a good rear bag. You could go with a Hunters Wedge for a solid rear bag or something like a Waxed Woobie Bag or sock to allow small changes with your off hand. I would also recommend practicing offhand, kneeling and sitting for shots closer than 200 yards. Those shots typically present themselves quickly and you may not have time to setup.
As a side note, get into PRS shooting. I can't say enough about how my shooting has improved by doing matches, and it's fun.