I shoot a Jackel also. The arrows I got with mine are 20". I believe I read a thread that Barnett recomends 20" with the Jackel but some packages were shipped with 22" arrows. A call to Barnett customer service might help, they are good to work with. Good luck, mine shoots really well, I use a Excalibur scope, 20'' carbon x arrows, 125gr. fixed broadheads.