Has anyone used the pull through style finish reamers on a short chambered barrel? I'd been looking at having a rifle of mine rebarreled and started thinking about doing it myself today. I have machine shop/CAD experience, but don't have the opportunity to use a lathe for this particular project. It would be a 7mm WSM short chambered Kreiger ss barrel put on a blued Browning A-bolt II .308. Also the 7mm WSM uses the same bolt head as a 300 WSM, right? Thanks.