I have boiled alot of skulls and I have had many stay within 1/8-1/4''When alot of guys that dont know the score system, they improper read off some meat or gristle ,and get a larger reading. Some guys keep them in freezer to last minute,then do a quick boil,just enogh to get jog done. This is not "technically ''right, but done.I have heard that beetles can be over done also with heat lamps and time but have not used them. I shot a large cat with my bow and it made B&C.But I had to have a official B&C scorer,but a official B&C qualifies for Pope.The B&C score was 3/16 larger.When a official score reads + 1/32,that is rounded up to next 1/16,these are judgement calls,that is why WRecords are panel scored.When you have a great skull like that you dont want to damage either front or back,or bust a cheeck bone,then it will looses alot of its score.Good luck on your bear. A friend of mine arrowed one that was 21 3/4 P&Y,that was the best that I have seen,looked at a few 21''. I arrowed a 21 1/16 number of years back