Cast for 308 win and 7.62x39

The link at the top of the Recipes page lists 115 gr from the RCBS @ 8.9gr of 700x.
700x is my next plan when I run out of 800x for my 115gr 303 loads

Clint
 
A few points:

- About sizing (or not): Try both … and see if there’s a difference. Thimpo.
- About recipes for “mouse fart” loads: If you have a new powder (700X?) and can’t find a recipe, start with 5 grains and work up. One grain increments should give you a sense of pressure signs. Poor and decreasing accuracy is also a sign that your charges are too high (cast bullets strip through the rifling when they accelerate too fast).
- Different bullets from the same mould?: Yes you can. Put a 170 grain bullet (nose first) in a drill and cut it with a hacksaw. The result is a 100 grain (depending on where you cut) wad cutter.
 
Al Bear said:
A few points:
- Different bullets from the same mould?: Yes you can. Put a 170 grain bullet (nose first) in a drill and cut it with a hacksaw. The result is a 100 grain (depending on where you cut)
Click to expand...
Glad to see that I'm not the only one thinking about this, that others have done it.
I was thinking a jig and a slow speed drill in a press for repeatabley.
I don't suppose a slightly hollow base from the cone of a drill tip would matter much.
 
After cutting a bullet, I put it back in the drill and clean the cut by leaning a file on it. Making a jig is not a bad idea (I have one made from a 32 cal shell) but you still have to file the cut end.
 
I picked up a lyman 311410 130gr but I can't find ballistics for it. Lyman 3rd ed. only goes up to 1600fps, and the 4th has velocity up to 2400fps. If it's suitable I'd use it for deer to 150yds and based on data from jacketed bullets it looks like it should be ok. Is there a source for extended ballistics, or a good estimation tool?
 
If I want 150 grain cast for .308 dia, vs 170 flat nose I push my .311s through my .308 sizing die. So I cast alot of those. I then get the 30 cal 170 flat nosed for the tube mags, .311 150 gr Spitzer type for the .303, and the 30 cals. I'm gas checking now but will be coating in the future.
 
I picked up a lyman 311410 130gr bc .239
The ballistics only goes as high as 1600fps mv in Lymans 3rd and the 4th has an mv up to ~2200fps mv in 7.62x39
Is there a way to calculate (close enough) 200 yd energy?
 
I've been using 700X in light rifle loads for years. 30-06, 308, 8x57 etc. One indoor plinker load for 30-30 uses 5 gr. 700X under a 93 gr. LEE.
 
There is some sweet info in this thread thanks to all for posting.

I have a question for the OP ghughes (and anyone else) - what check maker die did you go with and are you happy with it? What material are you using to make the gas checks?

Also, is it a safe/acceptable practise to substitute a cast bullet in place of a copper jacketed bullet of equivalent weight when using published reloading data? I'm thinking the pressure/speed may be too much to drive the cast bullet accurately.. But charge weights at the light/beginning of the data may be acceptable?

Worth a shot to ask..
 
theshootist said:
There is some sweet info in this thread thanks to all for posting.

I have a question for the OP ghughes (and anyone else) - what check maker die did you go with and are you happy with it? What material are you using to make the gas checks?

Also, is it a safe/acceptable practise to substitute a cast bullet in place of a copper jacketed bullet of equivalent weight when using published reloading data? I'm thinking the pressure/speed may be too much to drive the cast bullet accurately.. But charge weights at the light/beginning of the data may be acceptable?

Worth a shot to ask..
Click to expand...
Hey Shootist:
Rather than regurgitate a bunch of info, pl. go to my posting from Aug 24 of last year

Gas check adventures​


That should get you on the right path.
 
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