I also shoot Axis arrows. Thery are great, no doubt about it.
You made a mistake in only getting 6 made up. You need to shoot those six enough for practice that the feathers or fletching is tore up or you nick them up, then have another 6 or so with a only a few dozen shots each on them for hunting.....
I shoot Muzzy Mx-3 100 (but will move to 125's this year). I have also shot Magnus Stingers, mx-4's, muzzy phantoms and some other cheap things for "other" critters such as grouse or yotes or what ever.
I do use the BAR rings from easton on them. I do not "have to" use them on the Muzzy mx-3 because of how the blades are retained. If you are going to shoot any head that needs a washer to "keep" the blades in (many heads do) then I would strongly suggest that you use the BAR rings. make sure and get the correct ones as the 340's and 300's use different ones.
I also think that the BAR's improve the strength of the shaft right there.(they are designed to provide solid and perfect arrow shaft connection) The axis arrows have a different type of insert, it sits inside the shaft about a 1/4". So there is not any support from the insert for that 1/4 inch. The BAR will provide some support.
I have never noticed any undue breakage at that point with or without a BAR. I have broke a few arrows when hitting a rock or a severe deflection, right behind the head.
One more thing, the Axis also takes a special nock. The X nock I think it is. Not a bad idea to have a few x-tra of those around. The nock will alos take a beating if you hit them with another arrow, or hit something real hard. Often the nock is not broken, but after a lot of twisting or messing with it, they will get a little loose. Simply snap a new one in and you are ready to go. IF you are planning on using a lighted nock, the axis is the hardest and least receptive to the lighted nocks. This is due to the thin profile and the batteries and mech of a lighted nock. They do make them and have come a long way for the axis. I do not have much experience with lighted nocks in the last couple of years, but messed with them awile ago. Just seemed like more trouble then it was worth. IMO.