Hatsan Bully .357 slug size preferences

Does anyone have info on Hatsan Hercules Bully barrel sizing? I'm wondering which .357 variant to order (.355, .356, .357 or .358) from Neilson Specialty Ammo... It would also be helpful if anyone knows the max slug length for the rotary clip!

Welcome thoughts / opinions on this rifle relative pellet / slug likes and dislikes. I'm not finding much info elsewhere.



Thanks in advance!
 
The information I have on this airgun is limited because I just received my Hatsan Bully only 1 week ago but I know for a fact that .357" diameter is good. My strong feeling .358" would be just as good. The magazine is drilled all the way out to .365" Sadly this rifle is very limited on bullet length but is still acceptable. Just make sure the length does not exceed .515" under any circumstances as this will on allow .002" clearance. I would not attempt over .510" the be honest. Just no need to push it. Could cause too many jamming issues in my opinion due to inconsistent bullet forming. All that said I really think my experience with this rifle will be very good. Just wish they would have pushed that length out to .600" or more. I had 2000 rounds of .357" already molded that now will have to be remolded after I get my Lee bullet mold cut down, GRRR lol