Your .270 Win Fieldcraft is a solid setup, and it's great to hear it's shooting well with factory ammo. With the barrel cut to 19.5" and topped with an Ultra 7, you're already running a compact, high-performing rig.
To answer your question: Yes, the .270 Win can be used out to 1,000 yards, though you'll need to be dialed in with both your rifle and ammo selection. The 130-grain Partition is a good choice for hunting, but for NRL-style competition, you might want to consider ammo with a higher BC for more stability at longer distances. Look into something like the 140-grain Berger VLD Hunting or the 145-grain Hornady ELD-X, which will give you better velocity retention and lower wind drift over distance.
While the shorter barrel will give up some velocity compared to a standard 24" barrel, you're still in good shape if you're prepared to dial the right data. Get your dope dialed in, and practice with that gear to ensure consistent performance at longer ranges.
Let me know if you want to dive into more specific load data or ballistics—I'd be happy to help!
Good luck at the match!