Honestly I wouldn't be worried at all. 5.56 has higher pressure than 308 to my understanding and POF has the E2 extraction technology which relieves pressure all around. I do know POF uses a proprietary alloy for their bolt, which I can't figure out what it is. The brown color also has me perplexed in terms of coating. I would bet the bolt is made out of some superalloy and not S7 or 9130 VAC or whatever the big boys are using these days. Maybe H13? Most people's issues with the platform have to do with short stroking. I have not heard once any issues about the cam pin or bolt breaking.
Technically you can use the rogue or revolution carrier in an AR-15, but you can't use the AR or a piston carrier in the rogue or revolution. The reason why you cant is because underneath an AR-15 carrier the depth of the place where the magazine interacts with 308 mags isn't enough, otherwise it would work.
I have a POF Rogue that i put a Superlative Arms piston system on, but instead I used a POF Revolution bolt carrier instead of the SA one because no shop would cut the Rogue carrier depths for my SA carrier for me. All I had to do to make the POF Rev carrier to work with SA piston system on my Rogue was modify the mid length piston rod. Works perfect now.
The rogue/revolution carrier are the exact same dimensions as the AR15 except for the mag interaction underneath. The bolts are not the same because the lugs are different sizes (the Rev/Rogue barrel extension is also missing a lug), but it's technically AR-15 sized in terms of diameter at the tail and the interaction between the carrier. It uses a proprietary firing pin but the same cam pin and and retaining pin as an AR-1
I have spent a shit ton of time modifying my POF Rogue, which is part size wire, exactly the same as the revolution. Hopefully this helps you.