Digital BW, The Print

Here is a scan of my 51 step target printed to by Epson Adv B&W Cool-Darker
to EPSG paper with my corresponding QTR-Create-ICC profile:

(sorry for the formatting but I think you can scan through it)
  
 SampleID SAMPLE_NAME GRAY LAB_L LAB_A LAB_B
 21 G3 100 3.03 0.05 -0.6
 19 G1 98 3.28 0.05 -0.6
 17 F2 96 3.63 0.04 -0.46
 15 E3 94 4.18 0.02 -0.23
 13 E1 92 5.41 -0.19 0.1
 11 D2 90 8.06 -0.28 0.3
 9 C3 88 9.76 -0.23 0.47
 7 C1 86 11.83 -0.22 0.65
 5 B2 84 14.53 -0.19 0.64
 3 A3 82 16.94 -0.13 0.49
 1 A1 80 18.91 -0.09 0.55
 50 Q2 78 21.38 -0.02 0.48
 48 P3 76 23.75 -0.13 0.49
 46 P1 74 25.57 -0.24 0.4
 44 O2 72 28.14 -0.16 0.13
 42 N3 70 30.39 -0.15 0.11
 40 N1 68 32.41 -0.08 -0.1
 38 M2 66 34.68 0.02 -0.4
 36 L3 64 36.9 0.03 -0.51
 34 L1 62 38.78 0.07 -0.43
 32 K2 60 40.98 0.17 -0.59
 30 J3 58 43.13 0.08 -0.9
 28 J1 56 44.96 0.1 -0.85
 26 I2 54 47.03 0.05 -0.89
 24 H3 52 49.02 -0.08 -0.83
 22 H1 50 50.82 -0.13 -0.85
 20 G2 48 52.78 -0.14 -0.82
 18 F3 46 54.74 -0.15 -1.09
 16 F1 44 56.55 -0.07 -1.05
 14 E2 42 58.46 -0.15 -1.17
 12 D3 40 60.12 -0.17 -1.27
 10 D1 38 62.03 -0.14 -1.36
 8 C2 36 63.95 -0.18 -1.57
 6 B3 34 65.6 -0.17 -1.85
 4 B1 32 67.44 -0.26 -1.79
 2 A2 30 69.31 -0.31 -2.02
 51 Q3 28 70.89 -0.28 -1.99
 49 Q1 26 72.86 0 -2.06
 47 P2 24 74.32 0 -1.9
 45 O3 22 76.13 -0.09 -1.85
 43 O1 20 77.86 -0.18 -1.71
 41 N2 18 79.54 -0.42 -1.96
 39 M3 16 81.35 -0.78 -2.61
 37 M1 14 83.27 -0.81 -3.01
 35 L2 12 84.69 -0.73 -3.31
 33 K3 10 86.6 -0.65 -3.66
 31 K1 8 88.18 -0.56 -3.61
 29 J2 6 89.83 -0.5 -3.7
 27 I3 4 91.46 -0.54 -3.85
 25 I1 2 93.14 -0.55 -4.03
 23 H2 0 94.81 -0.61 -3.89

Here is the data from Adv B&W without the profile:

  
 SampleID SAMPLE_NAME GRAY LAB_L LAB_A LAB_B
 21 G3 100 3.33 -0.04 -0.57
 19 G1 98 3.83 -0.04 -0.53
 17 F2 96 5.08 -0.2 -0.34
 15 E3 94 6.32 -0.21 -0.32
 13 E1 92 7.81 -0.44 -0.43
 11 D2 90 9.91 -0.48 -0.48
 9 C3 88 11.39 -0.46 -0.67
 7 C1 86 12.85 -0.51 -0.42
 5 B2 84 14.93 -0.43 -0.92
 3 A3 82 16.4 -0.48 -1.23
 1 A1 80 17.83 -0.49 -1.07
 50 Q2 78 20.32 -0.6 -1.35
 48 P3 76 22.62 -0.64 -1.67
 46 P1 74 24.46 -0.68 -1.42
 44 O2 72 27.21 -0.76 -1.86
 42 N3 70 29.43 -0.61 -2.29
 40 N1 68 31.3 -0.61 -2.25
 38 M2 66 33.7 -0.59 -2.69
 36 L3 64 35.86 -0.55 -2.94
 34 L1 62 37.74 -0.52 -2.91
 32 K2 60 39.99 -0.48 -3.15
 30 J3 58 41.84 -0.43 -3.39
 28 J1 56 43.61 -0.43 -3.41
 26 I2 54 45.99 -0.52 -3.41
 24 H3 52 47.92 -0.6 -3.57
 22 H1 50 49.59 -0.61 -3.3
 20 G2 48 51.35 -0.76 -3.51
 18 F3 46 53.18 -0.59 -3.71
 16 F1 44 54.81 -0.6 -3.6
 14 E2 42 56.72 -0.67 -3.7
 12 D3 40 58.33 -0.58 -3.67
 10 D1 38 60.22 -0.54 -3.91
 8 C2 36 62.16 -0.61 -4.09
 6 B3 34 63.9 -0.56 -4.11
 4 B1 32 65.7 -0.62 -4.18
 2 A2 30 67.33 -0.55 -4.17
 51 Q3 28 69.42 -0.55 -4.1
 49 Q1 26 71.39 -0.3 -4.1
 47 P2 24 73.38 -0.21 -3.69
 45 O3 22 75.31 -0.32 -3.43
 43 O1 20 77.45 -0.5 -3.49
 41 N2 18 79.54 -0.8 -3.74
 39 M3 16 81.01 -0.93 -3.91
 37 M1 14 82.59 -0.98 -4.27
 35 L2 12 84.03 -0.8 -4.4
 33 K3 10 85.58 -0.7 -4.22
 31 K1 8 87.47 -0.55 -4.25
 29 J2 6 89.3 -0.49 -4.18
 27 I3 4 91.17 -0.52 -4.08
 25 I1 2 93.09 -0.52 -4.17
 23 H2 0 94.96 -0.57 -4.26

Clearly they have been read at different dry off times and were printed with
a different ink batch (look at the dMax difference) but I think you can get
a sense for what the BPC is doing....