A machine rest will not eliminate your errors. It can help mitigate SOME shooter influence, but it’s not a fixture - and firing fixtures really aren’t shooting, when it comes to factory rifles in the context like you’re shooting.
Shooters can punch holes in the 1’s, 2’s, and 3’s from bipods and rear bags. A machine rest should be more stable and more repeatable, if your bags and stock are set up to deliver it (which your Momentum is not).
For the money, the Bald Eagle and Sinclair rests are fantastic value. The Caldwell Rock rests, of all flavors, are relatively poor. Protektor bag in the rear - I prefer bunny ears to rabbits. Bag fit, fill, and treatment is critical, both front and rear.