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Hi craigster,
Thanks for the link.
I feel somewhat stupid, as I ordered the reloading dies from Buffalo yesterday, and somehow I missed the listing for the sizing die. I'll phone them Monday and hopefully add it to my order.
Thanks again.
Geoff.

I find this very strange. My 33a which is definitely a 9.3x57R (360) has a .366 groove diameter. Now when Vall came up with his showing a .375 groove diameter I figured that some one at the factory accidentally stuffed a barrel rifled for the 9.5x47R on his rifle and then chambered it for the 9.3x57R (360). The 9.5x47R has a .375 groove diameter, is shown as one of the calibers the 33 was offered in, but is a large bottlenecked case. It could be even stranger - what if some of the 33s were chambered for the 38-55?????? Or, maybe the Swedish 9.5x47R is not the same as the German/Austrian 9.5x47R. Vall, is all you had to do to the 38-55 brass to get it to chamber was shorten it some? If so, how much?

I found a cryptic reference to "or the straight cased 9.5x51R Express (EXP37)". That sounds like what a 38-55 shortened .1 inch could be. Anyone have anything else on it?

Hi marlinguy,
As I noted in my initial enquiry, I had read that using a .366 bullet in pure lead; it would bump up to fill the .375 barrel, using black powder. And from what I can deduce from all that I have read on this forum and others, the correct bullet is .366.
As I and all have mentioned, using .375 bullets in a 57mm case, it wont chamber.
So a .366 bullet must be correct. So I thought I would give it a try.
If it don't shoot worth a penny, I will use a short case and .375 bullets as I have done before.
I live in England in an area of East London called Chadwell Heath. So some 6000 miles from Washington.
Thanks for all the  input so far guys.
Regards Geoff.

Hi,
This situation is most interesting and perplexing at the same time.
I wonder what size bullets Husqvarna used back in the day?
They originally called it a 9.15x57R.Or did they call it a 9.15x57R/360? I doubt that they added the 360.(see below).
Who first called it 9.3x57R?
9.15mm is .360236'': Presumably that is where the ''360'' comes from, probably dubed by us Imperial speakers.
So 9.15 is  the bore/land size, and 9.30(.366) is the groove. I recon that Husky used a 9.30/.366 bullet in their original black powder loads,  and it bumped up to fill the 9.50mm barrel, as I read elsewhere, as stated in my earlier posting.
Did it shoot well back then? who knows. Or is that why 'oneatatimes' 33a has a .366 barrel, changed by Husky to shoot better!!!
My first reloads way back used fireformed 30/30 cases with .375 lead bullets. They chambered great, being a short case. Some brands did not allow the breach to close, others did. My current cases that I am cutting down are Norma 9.3x72R, and they will need the neck thickness to be thinned by .002. I have the Lyman case trimmer with the neck turning kit for inside and outside turning.
I shall see this project to conclusion, producing a correct 9.3x57R, or should that be 9.15x57R cartridge case using .366 bullets, and see if it shoots correctly. If not, back to a shorter case and .375 bullets. I will cut down the 9.3x72R cases further until a round chambers.
I will keep this forum thread up to date on my progress.
Cheers!!
Geoff.

Geoff, you said that your serial number was 220. So far we have determined that the serial is on the barrel and the left side of the upper and lower tangs and that the last 3 numbers of the serial are on the forestock wedges. Where was your 220? Val's number is 18xxx, 40-65tom's is 22xxx, and mine is 35xxx. Val's groove is .375, 40-65tom's must be .366 like mine because he is shooting Lyman 366408 with smokeless and getting target results. The /360 comes from being based on the Brit 360 2 1/4. There are a series of European cartridges based on this case and they are identified by the appended non metric /360 to differentiate them from the larger cases such as 8x57R (vs 8x57R/360) and to identify the parent case. IIRC the RWS catalog shows the 360 case number.