No offense but ferral hogs have a much leaner body mass than any domestic hog.So no photo "proof," LOL.
thallub never made such claims about 0.01 groups or weight over 400, but it is good you know these and apply them so appropriately.
That is amazing that you have the ability to know hog weights based on a single linear metric. That method works so well that it is not used in the swine industry. There are various formulas, some of which use length and some of which don't, but they all use heart girth, which you don't have in the image, plain and simple.
https://www.redwattle.com/docs/tutorial/How-to-calculate-pig-wt.pdf
https://www.thepigsite.com/articles/weighing-a-pig-without-a-scale
https://www.montana.edu/extension/sanders/pig taping.pdf
https://www.theseasonalhomestead.co...weights-plus-what-to-expect-from-the-butcher/
https://www.phinhall.net/online-pig-weight-calculator/
https://s3.wp.wsu.edu/uploads/sites/2051/2016/07/Cover-Letter-1.pdf
Wear those hogs in the trap pictured?i hunt hogs with a muzzleloader, usually, a .50 or .54 caliber. i like to wait for hogsto line up side by side. Twofer shot.
The 7x30 uses a 139gr jacketed Hornady TTSX