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If you got 300 rounds of ammo with it, then it is definitely a good deal. It does help to give all the information available when something wants to be found out. In this case, the ammunition was not mentioned until later, and does affect any opinion on how good the deal was.
You should be aware that some of that ammunition might be collectable, especially military issue ammunition. Breaking open a sealed box will definitely lower the values.
Also, most .303 military ammunition made was corrosive. Failure to fully clean the barrel will resulted in a rusted bore. If you fire military ammo, then standard cleaning procedure is to run two pints of boiling water through the bore. A special funnel was made for this purpose, but a regular METAL funnel flattened on one side, with a copper or rubber tube that fits inside the chamber works nicely. The boiling water run through the barrel heats up the barrel, opens the pores of the metal and flushes out the corrosive salts. A couple of patches then a lightly oiled patch will keep the bore from corroding.
If yolu are going to collect firearms, I would advise you to decide just what specific area or firearm type you want to collect. In my case, I like the Military firearms in gerneral, and the Lee-Enfield system, Ross rifles and Swedish m/96 Mauser FSR Target Rifles. That does not mean that I will not buy Winchesters, Colts, sporting rifles or other items, particularly if they are below valued, unique, or really cheap, but my direction of collecting is Military.
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