i think wally world has a cheap $30 bipod, the reason why you want to take it off your barrel is because it effects your Barrel Harmonics, since its on the barrel you will put different pressure on the barrel every time you shoot which means you'll have a different barrel harmonics each shot, which affects your accuracy... wider groupings... my $0.02
Did you bed the stock?
XDm-40 Production Comp Gun
FN 5.7 EA Tuned
Kimber Custom Covert II 5"
2 Remington 581S .22LR
1 Remington 581S .22LR
-Match Select Shillen Barrel
-Weaver 20MOA Base
-McMillan M40A1 Woodland Camo Bedded Stock
-Green Teflon Coated Action and Barrel
-Trued Action, Match Chamber and Crown
-2 lb trigger for a nice Bush Tail Sniper Rifle