Lyman 429421 Sizer die?

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tek4260

Buckeye
Joined
May 31, 2008
Messages
1,886
Location
carroll county ms
What would be the proper size sizer die to use with this mold? Will be shot in a 50th ann Flattop. I am leaning towards the Lee press mounted sizer and pan lubing with home made lube. Should it be sized to .429 or .430?

Thanks
 
Hi,

My experience w/ the 429421 is secondhand: a buddy uses that mould and sizes his bullets to .430" to use in his 629 S&W...

Dunno if he's ever slugged his barrel, but conventional wisdom as I learned it says go 0.001" over jacketed size for cast bullets if you haven't slugged yours, go the same 0.001" over barrel size if you have. Since a jacketed .44 bullet's generally gonna run .429", it seems .430" is a good starting point. If I had to bet on it, I'd think he used the same "conventional wisdom" choosing a sizer...

My buddy's Smiff likes .430's: my RH does too, and I haven't slugged it. We use different molds, but both use the Lee sizer. So I'd say unless you DO slug yours, you could do worse than get the .430" first...

Rick C
 
Thanks. I was leaning towards that, but I am new at this and would rather ask first. Now I just have to shoot up the 1500 240LSWC's I already have! Hope this Lyman die casts as good as the 325K 45 die I got from Veral.
 
You've got a great, proven mould. I size to .431" for all 7 of my 44 caliber guns. Take one of your slugs & drop it down each cylinder throat, make sure its lined up & you should be able to push that .430" slug right on through, you want a snug, push thru fit.

Dick
 
Three44s
i`ve always been told ya want bigger cyl holes than bore for lead , so i slug then i ream .001 larger then size .001-.002 over that & it`s worked for me , now i`ve found out `bout taylor throatin ???
 
429421005.jpg


429421 sq. lube grooves

my cast 14 bhn and sized .429.in my 50th no problems,no leading and very accurate.
 
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