hey bb.. to answer your question.. yes you most likely have enough KE to use them without question but you may not always get a pass through.. i shoot a 420 grain arrow at 315 for 96 lbs KE.. i personally will not have a problem but my friend shoots a similar setup to yours and used the 2 blade rage with little problems no complete pass throughs all the time but still very effective.. when in doubt use fixed blades