Just in case you think I just make UBoat parts; here is an almost complete list of the barrel types and scales I now produce
Most cases I can make your set and ship within a couple of days
I don't stock very many; but prefare to build as ordered; this saves brass stocks for the barrels needed when ordered

Nelson/Rodney Class RN 16” 1/600th and 1/350th scale
Queen Elizabeth/Hood 1/600th 1/400th 1/350th 1/144th 1/96th 1/72nd RN Mk1 15” This can be used for many other RN ships
14” 45 Caliber RN Mk VII KGV Classes 1/600th 1/400th 1/350th
13.5 45 Caliber RN Mk V Iron Duke 1/96th 1/350th
12” 45 Caliber RN Mk X Dreadnought class 1/350th
RN 6"/50 (15.2 cm) BL Mark XXIII Leander Class 1/350th (fits several other RN cruiser classes)
Bismarck/Tirpitz 38 cm/52 (14.96") SK C/34 1/350th 1/400th
Graf Spee 28 cm/52 (11") SK C/28 1/400th (Heller replacement)
Graf Spee 28 cm/52 (11") SK C/28 1/600th (Airfix Replacement) also Scharnhorst 28cm (11”) 1/600th
Prinz Eugen 20.3 cm/60 (8") SK C/34 Hipper class 1/350th 1/400th
SMS Konig 30.5 cm/50 (12") SK L/50 1/350th (ICM replacement) this is common to several classes
SMS Von der Tann 28 cm/45 (11") SK L/45 1/350th (also Nassau Class)
SMS Seydlitz 28cm/50 SK/50 1/350th (also Molkte Class)
USN 16” 50 Caliber BB61 Iowa Class 1/96th 1/192nd 1/350th
USN 16” 45 Caliber BB55 North Carolina Class 1/350th
USN 16” 45 Caliber BB45 Colorado Class 1/350th
USN 14” 50 Caliber Mk11 BB43 Tennessee Class 1/350th
USN 14” 45 Caliber Mk 8 BB44 New York Class 1/96th 1/192nd 1/350th
USN 13.5” 35 Caliber Mk1 Oregon/Indiana Class 1/350th
USN 12” 50 Caliber CB-1 Alaska Class 1/350th
USN 12” 50 Caliber BB32 Wyoming Class 1/350th
USN 8” 55 Caliber Portland Class Mk 9 1/96th 1/350th
USN 8” 55 Caliber Baltimore Class Mk12 1/350th
USN 8” 40 Caliber South Dakota ACR and C classes circa1908 1/350th
USN 8” 35 Caliber B1-5 and ACR2-4 also C2-12 classes circa 1898 1/350th
USN 6” 47 Caliber Brooklyn Class 1/350th
USN 5” 38 Caliber dual purpose 1/350th 1/96th (this gun fits many ships)
IJN Yamato 18.1” 1/200th 1/350th (includes the mounting rings)
IJN Yamato/Mogami Class 15.5cm 60 Cal Cruiser main gun; Secondary on Yamato 1/350th 1/200th
IJN 12.7cm type 89 40 Caliber AA 1/350th 1/200th Scale
IJN Fuso/Kirishima 14”/45 43 Year Type (includes the mounting rings) 1/350th and 1/450th
IJN Fuso/Kirishima Limited Edition set includes 14 x 6” 50 cal Casement guns and 8 x 5” AA guns plus the mains (Fuso had 12 main barrels)
IJN Takao/Mogami 20.3cm 50 cal Class (8”) main gun for most IJN heavy Cruisers 1/350th and 1/192nd scale
IJN Type 96 25mm AA Found on almost all IJN ships 1/200th 1/350th
R.N. Italian 8” Zara/Pola Class heavy Cruiser 1/400th (Tauro Replacement)
French Richelieu/Jean Bart class 380mm 45Caliber 1/400th (Heller replacement) ask about the common sleeve avail
French Strasbourg class 330mm 50caliber 1/400th (Heller replacement) common sleeve avail “NEW” 1/700th

If a barrel is listed here but not in the scale you need; please email to inquire if possible to re-program

Email if you need something not listed

Thanks for looking
Steve