mdhunter27,
Thompson Center offers a kit that will allow you to shoot 209 primers out of your Firehawk. Ipurchased 2 of these kits for the T/C Thunderhawk and it's a simple conversion you can do yourself.The kit is fairly expensive, but every now and then you can find them on ebay. I like using 209 primers, butit is harder tocap vs. the #11 cap.You can view the information on this on T/C's web site. http://www.tcarms.com/TC_HTML/accessrs_mzzloadkits.htm