Thank you team. I realised there is another set screw holding the primer ram in place a bit lower down. Same thread and about x3 longer than needed. I took it with me and found an old school engineering supply store here in a little village called Stratford. Lo and behold the guy took one look and said " yes, thats a UNC thread, and I have some but as short as you need nor with the nipple end that locates in a receiving hole in the shell holder stem". Anyway I bought x4 at 55c each. I just need to use my Dremel to shorten and grind an approximation of the nipple end. I bought enough to be able to practice lol. Should not be too difficult.
And yes I have the adapter from Lyman to use modern shell holders, and the longer stemmed primer ram to work with it. Pricey but in stock here with one store which was a nice surprise.
I'm having a bit of fun with the 310 dies making 357mag cartridges. I recently bought a new Lyman M die for 38-55 which is a game changer. Getting my head around the 310 dies, I came to realise the expander die works exactly the same. A plug/button that goes down inside the case as far as you want to seat the bullet and then a flaring of the case mouth to start the bullet. The best 357magnum rounds I've ever made! Same for 38-55.
It turns out, no surprise to those knowledgeable, that Lyman sold the expander die basically as two separate parts - the internal plug/stem with a dia
stamped on the top, and the die chamber in short, medium and long..as I understand it, you could have one each of the chambers and a collection of stems in different sizes to do different calibres.
308 stems are very common over here and I have several. Will do 308Win, 30-30, 30-06 etc.
Unfortunately my 44-40 die set is missing the expander die. I can use a short chamber from say the 357mag set, but am now on the hunt for the 44cal stem stamped 427 on the top.
If anyone has one, or a full set of 44-40 320 dies they would sell, I have a friend in Oregon I am staying with in October. I could pay now via PayPal and have them shipped to his address.
Im also in the market for other Pistol cal 310 sets.
Anyway. Thanks again for the responses.
J.
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