Quoted:
Does anyone have the specs of the barrel and chamber for the M18 recoilless rifle by chance? Barrel wall thickness at each end, type of steel, chamber wall thickness? Does anyone have blueprints by chance? I tried to IM prebans to see if he had or could take the measurements from his, or if he had blueprints by chance, but his inbox is full.
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Yes, as a matter of fact, I do.
I'm manufacturing a M18 receiver now - it's currently on the big lathe here. Reactivating a M18 (that I got from Destiny) and building another one as I go. Thankfully I found a mint, spare barrel, but I could use some other small parts or I'll be stuck making them from scratch too.
Been a LOT of research, found some mil design documents and performed plenty of metalurgical analysis on the originals. I have had to reverse engineer dimensions for the breech area.
What dimensions are you looking for ? And what are you trying to accomplish ?
I've been meaning to get some pics/blog stuff up on the project but it hasn't happened. Yet, maybe this post will give the the opportunity to :-)