Japan
Ranges according to Taki's page
http://www3.plala.or.jp/takihome/artillery.htm, in case of 75-105mm guns Fact Files give similar values
36 75mm Type 38 FH (improved) - 208, real 11.5km = 202 (11.9 in Fact Files)
45 75mm Type 90 FG - 208, real 13.9km = 204 (according to Fact Files even 14.9km, but Japanese sources might be better)
71 105mm Type91 FH - 207, real 10.8km = 201
72 105mm Type92 FG - 214, real 18.2km = 208
79 150mm Type96 FH - 209, real 11.9km = 202
80 150mm Type38 FH - 208, real 5.9km = shouldn't be off-map...?
103 140mm Type 3 - 210 - ? if it's naval gun, pretty correct (used in coastal emplacement in the game)
104 150mm Type89 FG - 214, real 18.1km = 208
Poland
I use mainly Polish book by A. Konstankiewicz, 2003, basing partly on manuals. Part of guns are British or French.
33 75mm vz.97 FG - 203, real 11.4km = 201/202 (sources for French Mle 1897 usually give 11.1km). Correct name is "wz.97"
63 25 Pounder GH - 202 OK
64 75mm vz.02 FG - 202, real 11km = 201. Correct name is "wz.02/26" or "02/26 FG" - this is not the Russian 76.2mm gun wz.02 (obr.1902), which had a lower range, but its 75mm modification.
67 105mm wz.13 - 202, real 12.5km (Polish data), 12km (Chamberlain) = 202/3 - it was French Mle 1913 (I suggest name "wz.13 FG")
68 105mm wz.29 - 206, real 15.5km = OK (I suggest name wz.29 FG)
70 100mm Skoda FH - 200, real 10 km = OK (I suggest official designation "wz.14/19" or "14/19 FH")
71 105mm M2 FH - 207, real 11.1km = 201 (US gun)
73 105mm Canet - 200, real 9.5km = OK (coastal gun only in the game, in fact should be 100mm Canet -
http://archive.is/hdZK ).
Name of unit 237 "105mm A Nadbrze" should be corrected as well.
By the way, such abbreviation of Polish name "Artyleria Nadbrzeżna" doesn't make much sense - it's like: "105mm Coas A", hard to understand even by the Polish. If you want to keep it, better would be: "A.Nadbrz."
74 152mm wz.30 FH - 208, real 22km or more = 212 (should be named Gun - it was coastal arty. Same remark as for #236 unit's name)
76 7.2in Howitzer - 211, real 15.5km = 206 (British)
96 120mm wz.1878 - 204, real 12.4km = 202/203 (better name is 120mm wz.78/31 or 120mm 78/09/31 - full designation was wz.1878/09/31)
102 4.5in Field Gun - 214, real 18.8 km = 209 (British)
103 8in Howitzer - 209, real 11.2km = 201 (British)
104 155mm M2 FG - 220, real 23.2km = 213 (US)
106 220 mm wz.32 - 205, real 13.5km = 204 (I suggest name "220mm wz.32 Mrt")
110 155mm Schneider - 202, real 11.2km = pretty OK (I suggest official designation wz.17 FH)
136 4.5in Howitzer - 202, real 6.6 km = not off-map?
234 194mm GPF Gun - 200, real 18.3km = 208 (Hogg's booklet, French gun)
248 5.5in Field Gun - 213, real 16.5 km (light shell) = 207