Good Afternoon, Gents.
I'm new to the forum. I have been lurking about these parts for several months before I registered in July. Over the years I have somehow accumulated a significant amount of bullet casting equipment. (molds, electric pots, lubri-sizers etc) I've loaded and fired a lot of cast bullets, just never casted any. I'm correcting that. I have found this forum to be a wealth of information.
I have a long term project that is slowly coming to fruition. I have a WW Greener 577/500 #2 nitro express double rifle. Over the last 35 years I have accumulated a set of RCBS custom made forming and loading dies + shell holder + rockchucker bushing; a single cavity Colorado Shooters' Supply mold; some BELL basic brass and finally some Bertram pre-formed brass. I have scrounged up the original loadings from Eley in England + found some "newer" black powder and 777 load data. I'm ready to load!
Note: The dies and mold were made from chamber castings of the rifle itself, so I'm fairly confident that they are both technically accurate for the rifle. The mold was based on the original 360 gr pure lead load.
Here is the predicament: The actual diameter of the cast bullets is .521 to .523. The expansion plug for the loading dies is .511. That means that there is a .012 difference between the expanded case Vs. the bullet. From reading the Stickys.....and there are a lot of them.... it seems that the neck size should be .002 - .015 smaller than the bullet. Even so, I'm just a little leery of attempting to stuff that extra 12 thousands into the case. I'd like to be maybe 2 - 4 thousands
Lyman, RCBS and Lee don't make expander plugs that big. Anyone know who makes them bigger? I may be out to lunch on this, too, so I'm also up for discussion or other suggestions.
Gents, thanks for your time.
Watch yer 6!