I would think for reciprocity to carry in other states.
I don’t know for sure, but in checking the USCCA gun laws page, nothing is mentioned about it. I honestly would be surprised if carrying with a round chambered was illegal.
https://www.usconcealedcarry.com/resources/ccw_reciprocity_map/ok-gun-laws/
https://www.usconcealedcarry.com/blog/oklahoma-gun-laws-what-you-need-to-know/