[hssandwich]

3 (before 11.08.17) With Limit

R' D' (L2 D2) //222
(U' R' U' R) U //223
(L' B2) // F2L-1
(L' B' L B) //leave 4c

R' D' U B' L' B L B2 L R' U @ R U D2 L2 &

& D R2 D' (leave 4e)
@ B2 R2 B2 R2 B2 R2 (1 cancel)

=23 moves

IF says 22 is optimal if you insert L2 U2 D2 R2 U B L2 U2 D2 R2 F U' at the end, cancelling 5!

Mo3 (a bit late) 25, 33, 23 = 27.0