Rifle's ideal centre of gravity ?

[angrybear]

My understanding is that a rifle ought to be slightly muzzle-heavy to allow a steady training & aiming on target. The further back the balance point the less stability you’re going to get which is fine if you are in the US Marines and expect to do CQB in your job with lots of rapid reorientation of the rifle, but if you are a sporting airgun enthusiast then deliberate aiming with a slightly weighty muzzle end is going to give the most hits.

That’s my threppence.

I would completely agree if you're on a range shooting at stationary targets, as will having a bipod mounted further forward.
but for field work where a live target might hop sideways or jump to another branch necessitating a quick change of aim a CoG /PoB further back can be a benefit, as can mounting a bipod closer to the PoB.

Travis's 95, above looks spot on.