As I have stated previously on this forum, we South Africans are having to wean ourselves of our local Somchem powders and convert all our loads to new powders.
I have a delightful Sako (ex 222) in 6x45 and need a load for the Sierra Gameking 85 grain bullet.
Please suggest a load using either IMR or Hodgdon powders, the only US ones available to us. An alternative is Vihtavuori.

I shoot a Savage 24V in 6x45mm (ex-223), I use 24 grs H335 with 85 grain Partition bullets and benchrest primers.
Nothing wrong with H322 either, both work fine. There is load data scattered around the internet.

I had one rifle that I loaded the 6x45 for using Winchester brass, Federal small rifle benchrest primers, and the 85-grain Gameking boat-tail hollow-point with either 22.0 grains of IMR 4895 or 24.0 grains of Hodgden H322. The H322 load was slightly more accurate, but both kept 10 shots under an inch at 100 yards. I was shooting these loads in a heavy barrel bolt-action target rifle.

Thank-you for the respective replies.
Just a note, though,is that IMR 4895 seems considerably slower than the rest of the options loaded, according to https://shop.hodgdon.com/winch...864626914.1580027794
H4895 is very much faster, on the other hand.

I'm using 27.5 grains of Hodgdon CFE223 with an 85 grain bullet for 2775 fps. This is with an obsolete Nosler Solid Base bullet, but the Sierra should behave similarly.

As to any difference between the IMR and H- versions of 4895, there was a time when I found the two indistinguishable -- the closest of any two powders of the same number from different manufacturers you might find. However, both powders have been switched between various manufacturers and manufacturing plants that it is impossible to know how one currently compares to the other. IMR is now made in a plant in Canada, while the H-version has a "colorful" history, first being a surplus military powder, then newly manufactured by ICI in Scotland, then by ADI in Australia, and perhaps some other source in between. You simply have to judge each by the performance of the lot you have in the rifle in which it is used.

Here's a link to some 6x45 data:
https://drive.google.com/file/...S2JDRFFYMFQtRTg/view

Been shooting one for 30 plus years, its my darling and you can't beat H322 for accuracy, and H335 for velocity, both are accurate enough, I use 322 for m varmint loads and H335 for antelope and deer loads for no particular reason.

Thanks very much for the information supplied.