Crikey! I received a 107 yesterday and it must be one of my deeper bowls. How on earth do you get through that in 20 mins?There's been some mention here of group categories of pipes, 3,4,5, and so forth. I was unaware of these groups. I assume they refer to bowl sizes. How do you tell what group size your pipe is? I have mostly Peterson billiards, about four of the 107s: what size would these be considered? BTW, my smoking time, if there are not any interruptions, is about 15-20 minutes, 35 or longer if I'm smoking (rarely) my giant Nording. A Peterson 107 lasts me about 15-20 minutes.
I too would like to understand the group grading. It seems to make little sense to me. I thought and probably incorrectly that the grouping was a Dunhill thing. If that is the case, to say that something is a group whatever really means nothing to someone unless they have experienced a dunhill of that very grouping. If it is not just a Dunhill thing then what exactly is the criteria for a group 3? Well come to think of it what is the criteria for a Dunhill group 3?
Is there really any set dimensions for these groups?