I've decided to go with the straight barrel. Ordered all parts through Muzzleloader Builders Supply in Idaho. They offer a terrific selection on parts, gun styles, tools, and accessories. Ryan is great to work with. He provided insightful information on the gun I wanted to build along with recommendations on furniture and parts.
He will inlet a swamped barrel at an additional cost if anyone is interested.
They have a user-friendly online catalog, also available in printed form. Check them out at Muzzleloader Builders Supply www.muzzleloaderbuilderssupply.com
Looking forward to getting started on this project...