After reading Alberto’s comment this morning on last week’s 3 finger chins, I decided to try a few more. I was curious to find out just when things switched from a comfortable 20-30 (both hands, normal grip) to 3 (2 fingers plus thumb, each hand).
The answer, perhaps a little surprisingly, is somewhere between 3 and 4. 4 fingers (well, 3 plus thumb – little finger tucked under the bar) is fairly comfortable, and feels similar to a regular supinated grip. 3 (2 fingers plus thumb, both little and ring fingers tucked) on the other hand is difficult. My grip just gives way.
What does this show? That :

Now, for the rest of the past week :
Thursday
The magic 50 once again. Regular, close-grip chins.
Chin-up 10,10,10,10,10 @bw
Friday
Total Gym work
Hack squat 4×10@60/132, 2×10@80/176
Chin-up (sternum) 3@bw
Saturday
A lethargic set of chins.
Chin-up 5@bw
Sunday
Almost in Zombie mode. Even the lure of rack pulls proved insufficient.
Monday
Not quite as tired. Yesterday’s rack pulls called.
Rack pull (4 holes showing, sumo, dbl o’hand) 2×20@60/132, 2×10@80/176, 2×5@100/225, 2×5@120/264
Tuesday
Various Total Gym work.
Wednesday
The scheduled session postponed a day. Only chin-ups for now.
Chin-up 5@bw
Chin-up (4 fingers) 5@bw
Chin-up (3 fingers) 2,1 @bw