So, in theory, would picking a tubular lock be pretty much the same as a standard pin tumbler? e.g., apply tension, set the binding pin, repeat...
I'm dealing with the lock on a Snap-On toolbox, specifically.

And the key:


I have 3 of these locks (2 mounted, one not) and 6 keys (1 set of 4, 1 set of 2). Since I had 4 copies of the same key (two come with a lock, I bought a second lock so I could use the same key on both boxes - so I have 4 working keys, and a spare lock with two keys), I figured I could sacrifice one of them... I filed the groves for the pins out so 1 - they don't touch the pins, and 2- I can get a pick in there to manipulate the pins.
You have to push in, then turn 90° (or turn 270° to take the lock out).
Before I destroy another key to test it - If I filed off this tab ↓↓↓ , would I be able to open it without having to push it in (there is another tab on the inside that would still turn it - all this tab seems to do is prevent you from removing the key when it is half way between locked and unlocked. Also, you would not be able to remove the lock with this tab missing)?

The reason I ask is because I can't really feel any pins binding, and I think it's because of having to apply force to the key on two axes at the same time. Because of this, I am probably also putting way too much tension on it too...
I guess since I already 'ruined' one key, I'll go ahead and file that tab off on that key - just trying to figure out if I'm wasting my time even trying to go about picking it like this...