Only picked this pic because it shows the debate well. What i was taught is that there is a lamb tip which is the first couple inches then there is the first year ring again easy to see about 3 or 4 inches from there. On this guy you can,t see a second year ring in fact i would say he is right on two.The problem is a lamb tip doesn,t end at year one it ends at around six months.
Just remember each person has there theory and a lot of first time sheep hunters are on here so it's best not to make it more complicated than it is. Whether it's a years growth or 6 months each annuli is counted as a year. Just so as everyone remembers that.