The X-sight is fine in the daytime. In fact, it is a nice day scope. Night time, it is challenged as many digital NV scopes are, the biggest hindrances being illumination, resolution, and magnification. The X-sight certainly may have the magnification and resolution, but you will need to find good illumination. Most illuminators for 250-300 yards are going to illuminate a large area. If you have vegetation or other objects much closer to you than the hogs, they will reflect back a much greater amount of light and make everything behind them appear darker or unseeable. A laser illuminator might be your best option for those sorts of distances with digital NV such as from Luna Optics. So unless you are hunting a large, mowed and well kept field, you are going to need laser illumination more so than IR flashlight illumination.
The ATN gets a bit quirky with higher magnification, giving a jittery appearance, but it might work for your needs.
The ATN X-Sight II 5x20 is a great day scope and pretty good NV scope for the price. for 250 - 300 yars the scope will be only as good as your IR light. Will the IR light that comes with it work out to that distance? NO WAY. will a quality T67 IR light work to that distance on beam? YES
Kill shot at 100 yards in thick woods with the stock IR light on Beam at through a good sized gap in the trees to the feeder.
will a quality T67 IR light work to that distance on beam? YES
Is a T67 more powerful than a T20 or T38?
A T20 is only good to about 100 yards and a T38 is good to able 150 - 200 max a T50 is good up to about 250 - 300 yards and a T67 is good to about 500 yards.
Should also disclose the T67 is about 3-5 inches around at the head. which is not only clunky but a pain in the rear to try to weapon mount. Basically a spot light hanging off the gun...
I agree with the comments on being able to use a flashlight in standing cover. The Digital scopes reflect back alot of the light, which ends up dimming the image you are trying to light up. A cut in the woods will white out because of the trees along the sides. An open field with short grass will go alot further.
I can use my Photon xt with the T38 at that range. I doubt I would shoot anything that far. But like already mentioned above you need an open space for any of those illumination unless you can get one with a tight beam, like suggested. I have no experience with the X-sight.
Here is a video of a pig I killed last year. The feeder is 80 yards away.
I shoot him about 60-65 yards away. There are other videos on my channel that can show you the white out from the limbs etc. I am sure all scopes would be the same in that aspect. Good luck...
If you're not in a real hurry to get one, Wikibuy has ATN X-Sight II 5-20 Smart Riflescope for $599 with shipping and tax included. Mine is said to be here on the 30th, and I ordered mine not so long ago. Bad thing is that I won't be here when it comes in. I have a feeling it could of been a typo, but who knows. I'll find out when I get back I guess.