ORIGINAL: Roskoe
You need to make yourself (or buy) a great big honking sandbag on which to place the fore end of your rifle. And a couple of smaller ones for the butt stock. This rolled up jacket deal has a lot of error built into it.
Agreed. Sandbags are fast, effective and cheap. I make mine out of pant or coverall legs.
As far as your freehand position it boils down to personal preference. Like mentioned keepit off the barrel.