Hello,
Everybody seems to like the Bow of Sinew, so I did some calculations (please correct if errors).
The goal is just to compare longbows, not to determine the damage per shot (no slayer arrows ...).
Assuming:
+5 arrows, pbs, ic, seeker +6, no deadly weapons, no fort, no DR, loot/crafted bows are not epic (just 1d8), force ritual, hit on a 2.
Example: dmg mod = 20
# Bow of sinew: http://ddowiki.com/page/Item:Bow_of_Sinew
+5 1d8 19-20 x3, elasticity, seeker +8
base = 5 + 2*4.5 +20 = 34
typ = base +force ritual = 35
crit 19-20 = 4*(base + seeker) +force ritual = 4*(34 +8) +1 = 169.0
crit 17-18 = 3*(base + seeker) +force ritual = 3*(34 +8) +1 = 127.0
average = 1/20 *[(15*typ) + (2* crit 19-20) + (2* crit 17-18)] = 1/20*1117 = 55.9
# Silver longbow:http://ddowiki.com/page/Silver_Longbow
+2 1d10 19-20 x3, holy
base = 5 + 2*5.5 +20 = 36
typ = base + holy + force ritual = 36 +7 +1 = 44
crit 17-20 = 3*(base + seeker) + holy + force ritual = 3*(36 +6) +7 +1 = 134
average = 1/20 *[(15*typ) + (4* crit 17-20)] = 1/20*1196 = 59.8
So Versus evil, with a damage mod of 20, the Silver longbow beats the Bow of sinew by ~4 average damage.
Using the same approach (and a spreadsheet), the average damage per shot are:
For Pinion assuming +4 damage from planar focus.
Assuming disrupting/smiting taking effect, so dismiss the longbows in the lists below if not valid)
I took into account the att/dmg +4 for greater bane.
Fort 0, dmg mod = 20 (some bows are vs undead/construct only)
================================================== ====
#2 GS Triple pos 82.9
#3 Unwavering Ardency 71.1
#4 alchy EWE 71
#5 eThornlord 68.7
#6 Holy Smiting 66.8
#7 holy burst of greater bane 66.4
#8 eShatterbow 66.1
#9 GS lit II 65
#10 Unwavering Ardency w/o fire 64.6
#11 eElem 63.5
#12 Silver Longbow 59.8
#13 GS lit II w/o holy 58.4
#14 Holy of Bane 57.5
#15 eSilver Flame 56.2
#16 Bow of Sinew 55.9
#17 Silver Longbow w/o holy 53.2
Fort 0, dmg mod = 40 (some bows are vs undead/construct only)
================================================== ====
#1 Pinion 115.5
#2 GS Triple pos 105.9
#3 Unwavering Ardency 98.1
#4 eThornlord 95.7
#5 alchy EWE 94
#6 Unwavering Ardency w/o fire 91.6
#7 Holy Smiting 89.8
#8 holy burst of greater bane 89.4
#9 eShatterbow 89.1
#10 GS lit II 88
#11 Silver Longbow 86.8
#12 eElem 86.5
#13 Bow of Sinew 84.9
#14 GS lit II w/o holy 81.4
#15 Holy of Bane 80.5
#16 Silver Longbow w/o holy 80.2
#17 eSilver Flame 79.2
Fort 0, dmg mod = 60 (some bows are vs undead/construct only)
================================================== ====
#1 Pinion 142.5
#2 GS Triple pos 128.9
#3 Unwavering Ardency 125.1
#4 eThornlord 122.7
#5 Unwavering Ardency w/o fire 118.6
#6 alchy EWE 117
#7 Bow of Sinew 113.9
#8 Silver Longbow 113.8
#9 Holy Smiting 112.8
#10 holy burst of greater bane 112.4
#11 eShatterbow 112.1
#12 GS lit II 111
#13 eElem 109.5
#14 Silver Longbow w/o holy 107.2
#15 GS lit II w/o holy 104.4
#16 Holy of Bane 103.5
#17 eSilver Flame 102.2
Fort 75, dmg mod = 20 (precision = 100 - 25 = 75 on undead/construct)
================================================== ====
#1 GS Triple pos 76.1
#2 Pinion 67.4
#3 alchy EWE 63.6
#4 Holy Smiting 60.4
#5 holy burst of greater bane 59.3
#6 GS lit II 58.2
#7 eShatterbow 58.2
#8 eElem 56.2
#9 Unwavering Ardency 55.1
#10 eThornlord 51.7
#11 GS lit II w/o holy 51.6
#12 eSilver Flame 50.9 (with fort 75-20 weaken undead = 55)
#13 Holy of Bane 50.7
#14 Unwavering Ardency w/o fire 48.6
#15 Silver Longbow 46.3
#16 Silver Longbow w/o holy 39.7
#17 Bow of Sinew 38.9
Fort 75, dmg mod = 40 (precision = 100 - 25 = 75 on undead/construct)
================================================== ====
#1 GS Triple pos 96.1
#2 Pinion 88.4
#3 alchy EWE 83.6
#4 Holy Smiting 80.4
#5 holy burst of greater bane 79.3
#6 GS lit II 78.2
#7 eShatterbow 78.2
#8 eElem 76.2
#9 Unwavering Ardency 76.1
#10 eThornlord 72.7
#11 eSilver Flame 71.7 (with fort 75-20 weaken undead = 55)
#12 GS lit II w/o holy 71.6
#13 Holy of Bane 70.7
#14 Unwavering Ardency w/o fire 69.6
#15 Silver Longbow 67.3
#16 Silver Longbow w/o holy 60.7
#17 Bow of Sinew 60.4
Fort 75, dmg mod = 60 (precision = 100 - 25 = 75 on undead/construct)
================================================== ====
#1 GS Triple pos 116.1
#2 Pinion 109.4
#3 alchy EWE 103.6
#4 Holy Smiting 100.4
#5 holy burst of greater bane 99.3
#6 GS lit II 98.2
#7 eShatterbow 98.2
#8 Unwavering Ardency 97.1
#9 eElem 96.2
#10 eThornlord 93.7
#11 eSilver Flame 92.5 (with fort 75-20 weaken undead = 55)
#12 GS lit II w/o holy 91.6
#13 Holy of Bane 90.7
#14 Unwavering Ardency w/o fire 90.6
#15 Silver Longbow 88.3
#16 Bow of Sinew 81.9
#17 Silver Longbow w/o holy 81.7
Note: I guess most of us have around 40 damage mod
Please tell me if it seems correct, thx.