I never tried any buffers/springs heavier than supplied with an adjustable gas block. I just adjusted the gas to where it would cycle the weakest ammo I shot which usually was Wolf steel cased 100 grain fmj. Ive never run a suppressor because their illegal in Illinois. My thoughts are you should be able to adjust the gas to function with about any buffer or spring unless there is insufficient gas to cycle the action even if the gas block is completely open. If there is insufficient gas then usually you need a larger gas port but your gas port appears to be permitting sufficient gas.
I have no idea if you can adjust the gas to reliably run with and without the suppressor without changing the gas setting.
I think your reloads are not overly hot but each powder bullet combination have their own unique pressure curve. I noticed on my over gassed 16 6.5 Grendel with carbine gas system there was a significant difference in how the rifle functioned in regards to powder and bullet used. A lighter bullet wouldnt cause the bolt to unlock to early like the heavier bullets with the same powder. Since my 16 barrel had a huge gas port I fixed it with an adjustable carrier key. I set it to lock open on Wolf and it now functions properly with any ammo Ive tried. With a 12.5 barrel and throwing a suppressor onto the barrel might mean you will need to adjust the gas for different ammo.
If the only time your getting ejector swipes is on your heaviest charge with 100 or 123 grain bullets then youll either have to adjust the gas or reduce your powder charge to eliminate the swipe. I have never noticed an ejector swipe shorten the life of my reloading brass in the 6.5 Grendel. I see the ejector swipe in the same way I view the dent in the side of the brass case, normal occurrence with a gas operated semi auto.
I have no idea if you can adjust the gas to reliably run with and without the suppressor without changing the gas setting.
I think your reloads are not overly hot but each powder bullet combination have their own unique pressure curve. I noticed on my over gassed 16 6.5 Grendel with carbine gas system there was a significant difference in how the rifle functioned in regards to powder and bullet used. A lighter bullet wouldnt cause the bolt to unlock to early like the heavier bullets with the same powder. Since my 16 barrel had a huge gas port I fixed it with an adjustable carrier key. I set it to lock open on Wolf and it now functions properly with any ammo Ive tried. With a 12.5 barrel and throwing a suppressor onto the barrel might mean you will need to adjust the gas for different ammo.
If the only time your getting ejector swipes is on your heaviest charge with 100 or 123 grain bullets then youll either have to adjust the gas or reduce your powder charge to eliminate the swipe. I have never noticed an ejector swipe shorten the life of my reloading brass in the 6.5 Grendel. I see the ejector swipe in the same way I view the dent in the side of the brass case, normal occurrence with a gas operated semi auto.