Advice on finding correct mold.

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  • Last Post 13 hours ago
Biddle1990 posted this 3 days ago

Hello all.

Cast my first bullets recently for my martini Henry and it's becoming a slippery slope! It's rather satisfying!

Anyhow, now looking at getting another mold. This one will be for my .303s, 7.7 Japanese and 7.62x54r. now, there are plenty of molds out there for these. I want to find an ideal one for all of them. To do this, I have to slug all the bores. Now my plan for doing that presently is to do a chamber cast . This way I can reuse the alloy on each rifle instead of having to buy multiple slugs. Just thought I would ask the experts over here first!

Any and all advice is very welcome!

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M3 Mitch posted this 3 days ago

Well, I don't shoot any of these, but, most of them would be served at least OK by a heavy, gas check bullet a bit bigger than the usual .310-.311 diameter, not sure Lyman is still making it, but they have or had a bullet intended for the .303.  That said you need to measure the chamber throat, not the bore itself, in all 3 rifles.  Frankly I would be surprised if the 7.62x54 is not a good bit smaller diameter than the other 2, and while you can size down an oversized bullet I think you would be better served by at least 2, and possibly 3 molds, one for each rifle if they are different sizes.  If you want to use a traditional lube-sizer, you will need probably 2 and maybe 3 "H & I" dies as well. 

What are you wanting to accomplish?  You intend to shoot in military matches, hunt, just plink, or all 3?

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Biddle1990 posted this 3 days ago

Mainly just target shooting for fun. I get okay results with jacketed bullets. My no4 in particular has had a hard service life. Currently getting 5" groups while my others shoot well under that.

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RicinYakima posted this 3 days ago

What M3 said. When you know the diameter of the largest throat, get a custom NOE or Accurate mould heavy plus (200 grains) and what every sizers you need to make them fit. If you buy off the shelf these days, you will have to buy four or five for every rifle to finds something that fits. One right mould is less than five Lee's.

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Biddle1990 posted this 3 days ago

Cheers. What some appropriatly sized fishing weights should be okay to slug all the rifles in question?

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delmarskid posted this 2 days ago

5/16" works out close to .312". 3/8" is .375" if you have small wrenches to fit and try weights you can probably find something that works. I have hit lead bullets with a hammer while they were standing on end to make them fatter. I bet that would work for you using fishing weights.

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Brodie posted this 15 hours ago

What you really need to do is make a chamber cast or a "pound cast" on each of the rifles.  One of the greatest detriments to accuracy , especially in mil-surps, is the bullet entering the bore canted or less than straight.  This bends and mal-forms the bullet making it wobble off course upon exiting the barrel.  If you don' know how to make a pound cast just holler and we will be glad to help.

't

B.E.Brickey

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pisco posted this 14 hours ago

when i bought my 310 a few years ago i got a lend of a mould and tried the cast bullet ,slugged the barrel,and done a chamber cast and sent it all to CBE and  dave sorted out what i needed

turned out the old mould was not cut like that any more and the new cutter was better for the heeled projectile 

 

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Ed Harris posted this 13 hours ago

Best, cheapest solution is to do a pound cast of each rifle.  Then measure and have Tom at Accurate Molds cut a bullet to fit the largest rifle of the batch. His 31-215B (GC) or BB (beveled plain based) works in most.  Of the NOE designs #316299 works in most.  Get several Lee push-through sizers starting in .314."  For rifles in which you need larger send to DougGuy in NC to hone as needed to .315, .316 etc.

Be advised that with rifles having odd number of grooves you need to wrap bore slug with paper and measure over that and subtract twice the paper thickness.  I've found that a .316" sizer works for most of my .303s and Russian 7.62x54Rs, whereas a .314" stock Lee push-through works with US M1917, and US .30-40 Krags and much-worn '03 Springfields which have been shot a great deal with jacketed bullets and have worn throats.

73 de KE4SKY In Home Mix We Trust From the Home of Ed's Red in "Almost Heaven" West Virginia

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