I have been shooting a 243 for deer and hogs and most everything else you can shoot in Texas for over 45 years, only complaint is that sometimes there is little to no blood trail due to the bullet staying inside the critter, but about 19 times out of 20 the critter only goes about 2 feet, straight down.

First question for the OP:
Have you actually done any hunting with night vision?

If you have done much, you soon realize that pretty much ANY gun will take pigs with a properly placed shot at the distances most night shots are taken.
Sure, you can take longer distance shots at night if you know the area well but I tend to err on the side of safety.

A bolt gun usually only gets one shot off before they scatter so you should take your shots carefully.
Again, pretty much any cal will do this.

The biggest consideration for me would be IF the chosen night vision will handle the recoil - with a decent illuminator, ALL of them will easily "see" 150 yards.
Yeah, I killed a couple due to recoil.
It was supposed to handle a 50cal but only took a dozen shots with a 458 Socom to send the sensor into LALA Land.

I don't have a dog in this hunt since I have what I want gun wise for pig hunting but still drool over the thermal stuff.
IF it's a dedicated night gun, I know I won't be shooting over 150 yards at night AND how expensive good NV is, I would go with the 243.
If it was going to be a mixed use gun that may see daytime service or general use, I would go 308 due to large variety of ammo.

I do reload so tailoring a target specific bullet is not a deal as I already have .243 and .308 dies and consumables.

Either will do the job.
Night shots tend to mostly happen between 50 and 150 yards.
Who will be shooting it most of the time, smaller folks and kids?

I've been in the mood for a 243. Always heard it's for woman and kids.
I think it would fit in good between my 223 and 308.
I hand load and really like what I've been hearing about the 95 grain bullets.
The 243 would be a great all round Texas gun. Varmi, pigs, and deer with light recoil and easy loading.
Very soft recoil and better than me accuracy.

FIFY

But a 222,204, 223 are manly rounds???

These caliber threads crack me up.

243 all day every day

I like my 243 win mag. I just wanted to see how many 243 diehards were out there.

I use mine for coyote hunting when I might run into some hogs. Great all around gun.

6.5 Creedmor! The hogs will be much more impressed with your cartridge selection.

Please just put bullets in hogs. They are a becoming a greater problem daily. I will kill them with absolutely any weapon that is nearby. 22lr, 22mag, 9mm, 40sw, 10mm, 45 acp, 223, 22-250, 243, 6mm, 224tth, 7.62x39, 25-06, 308, 300wm, 300rum, 300 saum, 7mag, 12gauge, tannerite, arrow, snare and Bowie knife is all I can remember killing pigs with. I don't like animals to suffer and make humane kills whenever possible but when it comes to hogs I just make as many holes as possible. Numbers in our area are way up this year.

Almost forgot 6.5 creedmoor and Grendel.

243

I am a big fan of both, but I prefer the .243

Man, I love my new Tikka T3 CTR in 260. It shoots awesome with little more recoil than the 243.

Get both...243 for feeder hunting and 308 if your walking around..no brainer.

308 or 6.8 AR

There's no replacement for displacement. .308 everytime.