Every +7 or +8 jump will have a risk
The easily way to compound dragoon's battlerobe is to take a +7 or +8 jump
If you want to compound it without failing. you need to get magic of defiance, which is a really hard equipment to compound
Or wait for a wand in the next version
Sorry for my HORRIBLE ENGLISH AND GRAMMAR!
If you have any compounding problem, you can aske me:)
Take a risk on compounding