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I have two BCM rifles, one a 16 inch middy and the other is 14.5 carbine. The middy is noticeably smoother shooting with less recoil and muzzle rise, unfortunately my middy does not like .223 spec ammo and regularly short strokes with most .223 ammo. My carbine on the other hand will cycle anything my middy won't including PMC bronze which chokes hard in my middy, the downside is it kicks noticeably harder (not bad though, we are talking about 5.56 here). My home defense/shtf gun is the carbine gas simply because I've never been able to make it choke. If I could only have one it would be the carbine gas.
The only reason your carbine will kick harder than your middy will be if it's lighter. Two rifles of the same weight shooting the same ammo at the same velocity will generate the same amount of recoil regardless of action type. One may have softer or harsher recoil than the other, but the amount of recoil will be the same