Savage 111 300 win mag magazine size?

[Buster95]

I would like to know if there is any difference in the magazine well opening between a centerfeed and a staggered feed action, I have an old unfired 111 in 300 win mag staggered feed (mag attached to the action) and I'm interested to buy a MDT HS3 stock for this gun, MDT have two magazine length option for the chassis one 3.560 and another 3.715, the 3.715 is too long but the 3.560 will fit on a staggered feed action or a center feed is a better choice for this?

[MDTcorp]

I would like to know if there is any difference in the magazine well opening between a centerfeed and a staggered feed action, I have an old unfired 111 in 300 win mag staggered feed (mag attached to the action) and I'm interested to buy a MDT HS3 stock for this gun, MDT have two magazine length option for the chassis one 3.560 and another 3.715, the 3.715 is too long but the 3.560 will fit on a staggered feed action or a center feed is a better choice for this?

3.715 is what the magazine well is on the HS3 for Savage.
The 3.560 magazine is only used for Tikka T3.