Somehow I have never owned an RSI, despite collecting #1's.
I'd probably try a few things first:
1. Quality handloads
2. Check the barrel for fouling/roughness. If needed fire lap it.
3. Relieve pressure points/inconsistent contact in teh barrel channel.
If that doesn't work, but you still like the rifle, I'd consider getting someone like Pac-Nor to rebarrel.
