My Speer Manual does not have any info for Somchem S321 and was wondering if anyone could offer some advice on using this powder behind A 15Og flat nosed soft in a pre 64 Winchester 30-30

Never heard of that powder, what's a comparable burn rate? The 30-30 usually has a modest charge of a faster rifle powder. I'd think google should find something, if data is available.

looks like S321 is a lot like Norma 201.
I would start with 32.gr and not exceed 33.5gr.

Hi...Yes the Somchem S321 does appear to be on par with N201, My Speer Manual suggests between 26g - 30g for a 150g bullet....you suggest significantly more than these figures???? Please help a newbie out here and tell me why you suggest more??

quote:

Somchem S321

That data was strait from the Norma website. Looking back I think that those numbers are a little hot for a lever action. Keep in mind that the 30-30 is downloaded because the lever action is not as strong as a bolt. I think the Norma site reflects data generated for bolt actions or their single shot equivalent. Looking at my hodgdon book it lists 27-29gr for bench mark, which is a little faster. That being said, 28-30.5max seems more reasonable.

Ok Awesome...many thanks for the clarification.
Appreciate the advice.

I would be a bit nervous assuming a listed charge for one powder would be safe and reasonable for another powder. Aproach with caution and chronograph to make sure the results seem reasonabe and safe.

Go to this South African site and you will definitely get help there:
http://www.gunsite.co.za/forums/forum.php/

Thanks Guys for the info.....thought i had settled on a load of 29g of S321 but maybe try and get some advice off site mentioned....thanks again!