Here are 2 of my X7 2314s
the top one was newish, not shot alot.
the bottom one was shot for about 4 months, 3-5 days a week.
You can see clearly that the bottom one is much lighter than the top one. The 2312's I use to use would be totally silver at that point.
To me this is a strong advert FOR X7s. Look at the wear on what is quite strong anodizing and consider what that will do to quite flimsy carbon. IMHO you will see loss of grainage in a shorter period of time.
In fact we have tested a loss of 5 grains to X10s shot into straw type targets in 3 months of use, that's an inch worth of arrow.
The Fatboy is a great 3D arrow, but for indoor usage I don't think you will get the durability that you require as timppa's results show.
If you shoot
compound I would suggest
Easton X7 2312 or 2314
nibb point
2.5-3" vanes*
If shooting
recurve
The
Easton X7 that suits your bow (a 600X10 will be a 2112, quite large)
normal nibb (contray to old wives tail arrow weight can not soften you arrows, but that's another debate)
2-3" feathers (use the right spine and you don't need 5". Feathers reduce the effect of contact)
* Many people overdo the vane thing buy a huge amount. The arrow is straight within a few metres of the bow, that much drag is not going to help and often introduces contact issues. The only good reason for larger vanes is looks.