The extra 10 pounds likely would have made a big difference for Connor Williams.
Nobody is saying to take him off the draft board. The question is specific to 1st round vs 2nd round.
Recap from my OP:
His size limitation is at the far end of the scale with really short arms (31-1/8" arms, 6-3, 296).
In reviewing the measurables of some smallish NFL OLinemen, I have not found any quality OL with arm length below 32". Not saying that one doesn't exist, but none that I've found.
He was 270 pounds as a freshman and reportedly played in the mid 280 range last season. He might be maxed out at 296.
Players like Rodney Hudson (6-2, 299 pre-draft), were able to bulk up in the NFL (now listed at 315).
Unfortunately, NFL weight listings are rarely accurate making it difficult to compare.
Corey Lindsley, a 5th round pick by McCarthy's Packers in 2014 is listed at 301 with 32" arms.