whats the cast boolit "rule of thumb" on loads?

[RogerDat]

I'm really not an advocate of going by general rules as opposed to real honest load data. Which was why I called Hodgdon for confirmation of my load when I was going a little bit close to the margins. However if you have a known safe load and want to translate from jacketed to cast that 60% of max is a fairly decent place to start. The more you know about the powder and similar loads the less dangerous it gets. E.g Knowing H110 needs sufficient load to build pressure for good burn. Or Titegroup can spike pressure sharply on a minor load difference.

Personally if I had a load I was working on with some "rule" I would bounce what I had in mind off the members here for feed back. Good chance someone else already has known good data to apply to what you are trying to do. Or knows of a source to check for some tested and definitive load data. Some members have done a lot of testing, others have a library of manuals to draw on. Including some older or less common ones.

In my case Hodgdon said they don't load test a lot of .303 British rounds but using the ADI load data for the equivalent H powders was safe. Then I got to feel good and enjoy rather than fearing I was going to end up with a bolt sticking out of my face. Ugly enough to start with, don't need that.

[Oklahoma Rebel]

I wasn't so much looking for a load as I was defending the op, when someone said " keep looking, every boolit has load info out there" when I said that I had looked everywhere for load info and found none, sorry for the confusion. it 's just that sometimes there isn't load data to be found, I think especially now that cast boolits are becoming more popular and more and more boolit designs are available. good luck to the OP

[dbosman]

I'd start with this site.
http://castboolits.gunloads.com/show...-250-gr-9-3x62

one said " keep looking, there is data for everything out there" I have looked and looked and looked, for 9.3X62 285gr cast, cant find any data for any powder ( would like to use imr4895 or varget), what now? min charge for 285 jacketed X .90??? thanks-Travis

[fivefang]

Randy,I have used 12.5 gr. #WC 820 under a PC'd lee 90gr. s.w.c. & sml.R.Primer in the 7.62x25 Tokarev Zastava with good results, it registered 1450fps. on my Chrony, WC # 820 in my .44 preformes quite the same as the #H110 with a minimum chg. of 21.5 Gr. under the 215gr. Thompson /Lyman GC, just my 2 cents, Fivefang

[Grmps]

Here is a list of online load data sites http://castboolits.gunloads.com/show...online-sources

[Oklahoma Rebel]

that was good info, as I plan on getting a 250gr someday, but I am starting with a 286gr and sticking with it for a while. unfortunately I have gone through that list twice, and if there is something in there, I missed it. there were a couple sites that ddidnt load, I think they might have been hodgdon

[TXGunNut]

Lyman and Lee have quite a bit of CB data, Lyman even has a CB manual. Too many exceptions to many rules of thumb.