With a big boomer you might also want to consider construction. Might be worth upgrading to the NSX over the SHV.
As I've said here before, the further you go out, the less critical magnification is.
If you are shooting precision at 100-300y, then you want all you can get. You measure accuracy in heartbeats, etc.
When you are shooting 800-1500y, a heartbeat isn't going to affect your shot. Wind calls are far more important. Zooming in all the way reduces the information you receive, and if your gun's recoil isn't controlled, also prevents you from seeing hits.
I often shoot 800-1000 at 13-16x. With larger view scopes I can bump that up to 20-25 and still have a wide field of view (Razor Gen II, ATACR, etc). The NSX, SHV, and my Gen 1 Razor is a narrow field of view scopes.