I was replying to someone who claimed a .50 cal could do the job. I was pointing out that firepower wasn't the limiting factor - you could do it with something

I was replying to someone who claimed a .50 cal could do the job. I was pointing out that firepower wasn't the limiting factor - you could do it with something smaller, but that wouldn't matter. The second paragraph was the main contribution; the first paragraph was a transition from the statement of the person I was replying to.