The pig does look big. They both do. However, it is really hard to tell without any reasonable perspective and the distance the pig is from the feeder (which Ponyboy was asking about for perspective). If the feeder is small, but in the tree it is over, then I would guess 180-220, but that is based on a very limited image and information. :-)
If the bottom of the feeder is 5' up then that puts him between 2.5-3' tall. Plus he's got a pretty big gut and he's starting to get that "no neck" look which means he's getting to be of some size.
I really like to see them from the front or back because some of them are tall but really thin and others are really round. He looks pretty round but it's too hard to tell especially with half of a picture.
I'm going to go out and guess him at 250-275 but that's just a guess. I wouldn't expect him to be less than 225 but he could be more, I just can't tell.
If you can't get him weighed in the field before gutting, take his heart-girth measurement. It is pretty accurate, certainly better than eyeballing or deadlifting to guess weight. It is taken 3 times, on the ground, behind the front legs, with a measuring tape. The table on the following site is in whole inches, but they are in mostly 10 lb increments per inch so you can estimate with fractional inches as well.
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