Don’t use recoil buffers of any kind.
John, there are many that have your school of thought about buffers.
I like to practice with the same gun and ammo as I carry. I practice a lot with full power loads.
Maybe the best way to do it is to practice with the buffers installed , but never use them in a carry situation. I am leaning towards this regimen.
I am saying, one step beyond using new buffers only during carry. ( a failed buffer can cost you your life) Is this your position?