Author Topic: My first castings of the Mav .44 version of the PRS boolit  (Read 894 times)

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Offline Pigeonroost Slim

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My first castings of the Mav .44 version of the PRS boolit
« on: June 02, 2003, 03:10:21 AM »
I cast up a small lot of Mav Dutchman's boolits last Friday evening.  I had jest a tad bit of trouble with mounting th block on my handles as the mounting holes were off jest a fraction or so, but I modified the handles to accept the blocks.  I used my usual alloy of wheel weights plus an extra 1% tin.  I cleaned the molds with soapy water and tooth brush, rinsed well with hot water and preheated the molds over the casting pot.  I smoked the cavities with a wood match and lubed the pivots and pins with NRA allox boolit lube.  Filled and dumped the mold very rapidly a few times to get it up to working temp so that the spru plate cut through with no reistance and so that the molten lead stayed molten for a few seconds after the pour.  Then I started in Earnest.  By golly, I tell ya Lee makes a fine mold in this 6 cavity commercial set-up!  Every pill dropped picture perfect and just jumped right out of the blocks when opened.  I cast out about 10# worth and wiped the hot mold down with asoft clean cotton rag and pey 'er away.  Each cavity dropped boolits identical to the others.  Mine mic'd out to .432" in diameter with .049 depth to the lube groove and all tipped my scale at 201gr plus or minus less than 1gr!!!  That is superb even if it were a single cavity mold!  The boolits look like smaller versions of the PRS with a slightly shortened lube groove width and without the above the crimp groove full diameter area (which is only very slight in width in the PRS).

Marshall Graybeard, if I send ya pics of the whole (so far) family of these new boolits, plus the Maxi-ball and modified by PRS Maxi-ball; could ya post it fer our Pards to gander at?

As an aside; to get pics of the Maxi, I had to cast some more.  DANG what a chore!  I am spoiled by the Lee 6 cavity PRS molds.  That old single cavity steel mold was a real PAI to get working.  I had to clean it twice and smoke it several times before it finally gave in and dropped (with persuasion from my old nearly lost wood hammer handle "mallet") flawless boolits every once in a while.
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Offline Mason Stillwell

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My first castings of the Mav .44 version of
« Reply #1 on: June 30, 2003, 03:08:24 AM »
I am having more trouble casting with the mav than my prs mold.
the mav holes didnt quite line up and I cannot get it to throw a non wrinkled bullet. Now I have been casting for years and know bout heat and stuff like that.

I'll get it sooner or later

Mason
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Offline Pigeonroost Slim

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My first castings of the Mav .44 version of
« Reply #2 on: July 07, 2003, 07:44:11 AM »
Hey Ho Mason!

Which "Mav holes" didna line-up?

If it is the handle mounting holes, which is what did not line-up on mine, DO NOT mount the block halves while seperated and then try to cast.  They must go together in a relaxed state.  What I did was to put the block halves together and place one handle and screw into place.  I then took a #2 pencil lead (split a common pencil open with yer pocket knife to get the lead only) and put it down the other mounting screw hole and worked it around to show where the hole was mis centered compared to the hole in the second handle.  It was off by about 1/10 of the diameter of the hole (Lee's fault, not Marc's).  I made the correction in the handles, not the mold block and I don't really know if that makes these handles fit for use in just this mold.  I made the correction with a small round file (saw chain file).  The molds really need to fit together in a relaxed way.  If it was some other holes, let me know.

prs
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Offline Rifled Slug

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My first castings of the Mav .44 version of
« Reply #3 on: July 07, 2003, 03:29:36 PM »
Maybe the whole batch was off cause mine was also . Once I got everything so it didn't bind I started getting good bullets .
Rifled Slug