larcher - Regarding your English, well I won't even attempt French.

Speaking of which....

What to you call a person that speaks three languages? "trilingual"

What do you call a person that speaks two language? "bilingual"

What do you call a person that speaks only one language? "American"

I understand what you are saying about the groups. That for the type of shooting you're describing taking multi-shot groups may not be necessary in practice.

For me, however (personally), 100% confidence in the gun must be aquired first. I have to know what the gun/load combination is capable of, and I don't believe that one R&L off the bench accurately tells the story. So I shoot 6 or 8-shot groups to build confidence in the rifle & load's ability.

Having established confidence in the rifle, I then get away from the bench and work on shooting from various positions to gain confidence in myself. You might look at it as the elimination of variables in the equation.

A one-shot group (R&L) regularly come in for me at 1" or less at 50 (The two closest R&L in that 8-shot group are the first two shots fired.) And I shot 3, two-shot groups like that yesterday, but pushing on with the next 4 or 6 shots in those groups invariably open up a bit, and it's with those groups (if they are good) that I can gain a real confidence in the gun & load.