FX Crown magazine fit any Nielson slugs?

I fell in love with the crown as soon as I saw it and am dying to pick one up. My only hesitation was because of the upcoming slug barrels and the possibility of the Impact being a better fitting platform for the 700mm length. According to the STX-liner release page, lighter slugs will work best in the 500mm barrel so that seals the deal for me. I figure the magazine can only hold lighter slugs like the barrel page recommends 34-40gr .250 anyway? Sound logic or not?
 
"Groundhog"Just checked , the 34.7 , 39 , and 44 grn slugs fit in the .25 mag . The 44's just barely fit and may drag slightly when the mag is inserted in the rifle .
That is great news, thanks alot. I am super pumped now and cant wait to shoot this sweet gun. Now to head over to the optic section and start combing through everyone's selections. I just saw a video from Ted about his own line and my interest sure is peaked as to what thats about.