I have only footed some Axis/MFX,the ones I footed did not have the heavier brass inserts in them.I footed them so 5/16" points fit more flush and they come in heavier weights up to 300 grs..Those heavier points are longer and the put alot of leverage on the open end of the shaft on a glancing blow.It really helps to strengthen the front end of the shaft on the skinny carbons,keeps the end of the shaft from cracking.I used 1" to 1.5" foots,that short doesn't affect spine,just adds alittle weight to the front end maybe like 10-12 grs.I just made my foot just to overlap the front of the HIT insert.