Harrington's M

After recently re-reading his book ive been experimenting with M strategy. I used to pay much more attention to my stack in relation to the blinds than M's despite being aware of both. Paying closer attention to M's has made me play much more agressively (both raising and calling).

I have significantly opened up my range with M's of 10 or less.

My question is at what M would you shove any two first to enter the pot given that there are no players with less than 10xbb to act behind you.

Here's an example:
200/400 blinds (pot is 1050)
You have: 7,000 chips
3rd to act with Q7s

Table is fairly tight and you think only premium hand will call a shove

I have been shoving these spots instead of raising
Is shoving ~16bb pf with 6 unseen hands to act stupid? should I just be raising?

A few weeks ago I was sure that shoving 16xbb pf with air was retarded; now i think that it can be a good "any two" spot.

I think the shoving point Vs M question is a tough one and depends a lot on how tight the table is and the stack sizes behind you. If you have small or huge stacks behind that makes a big difference too as it is obviously much easier/more likely they will get it in. This is why I think M is a good concept but very situational in terms of shoving - you can't set a rule and stick with it. Obviously getting much lower than an M of 10 and you're open shoving ATC in position and any Ace regardless. If you shove and someone has to call off 1/4 -> 1/3 of their stack to see it then I would be more likely to shove a wider range. Near the bubble even more so.

In your situation above I think the comment of no players less than 10bb behind you is not that useful - if you said no players with less than 25bb or greater than 80bb then there is more merit in it IMO. If someone has 10bb behind you their M is 4 and they are in deep crap so will get it in with almost anything.

I would personally like to be in a better position to shove than 3rd to act on a full table with Q7s - I'd rather shove complete air/trash in position - and I mean ATC.

Q7s UTG + 2 with an M of 7 is never a raise. It's either a fold (my preference) or a shove.

My reason for using 10xbb is that in lower stakes tourney's I think players with 10xbb or more still think they have enough chips to fold. We may see that they have an M of 4 but thats probably not how they percieve the situation. I think that even with such a small stack they can fold Ax or Kx hands to EP shove. As for big stacks i completely agree. what does ATC stand for?

Thanks for the comments.

Your point re. lower stakes is probably very valid - I didn't really take stakes in to consideration.

ATC = any two cards.

in that situation id let it go since Q7s doesnt do that well when called and your M is still nearly 7 my personal line where i go into desperation mode is around 5-6 depending on stack sizes and number of players at the table (more players and more stacks like mine ill wait longer)

if you fold the Q7s you get to see two more hands till the blinds reach you and even if you have to fold the next 3 hands then you have an M of 6 and are in the SB
so the next 3-4 hands when folded to me id push allmost ATC

another very important part of M strategy is calling a shove, which in my experience in Turbo SNGs is misplayed by some regulars

what makes the calling more difficult to play is you need at least some kind of idea which M strategy the player who shoves uses i myself think that its right to call the BTN shove of some regulars pretty light in the Blinds means T6s and better

(right situation for this kind of call would be either reg or both blinds have an M 5 or lower + reg uses an aggressive M strat to push)

this is the way ive been playing lately in the T SNGs and till now im happy

You can calculate it pretty easily. Harrington does it several times through the book.
I use PokerStove (Harrington mentions it in the book ) to make my calculations.