None of my books list it. Did the google search already, lots of variations.Looking for 180 grain loads

Try Nosler, Alliant, and Hodgdon's online data. That's what I've used in mine and it's worked quite well. H380 and the 4350s work great for 150-180 pills. R22 works well with 180s. R17 is where it's at for the highest MV loads, but creep up to Alliants R17 data as it's hot in some rifles.

The 300 SAUM has been my go to rifle/caliber for about 8 years. I have 3 favorite loads. 150TTSX, 160GS custom and 168 TTSX. All 3 love Varget, R-P cases and 210 Match primers. 4350 will work as will H380, R-19 but without a doubt mine LOVES Varget. With 150s start at about 57gr and work up,with 168TTSX start at about 56 and work up. Mine takes considerably more but I am shooting moly bullets. But even before I started mollying, Varget was the clear winner.
Bill

Three pages of pm's sent. You should be able to devise a load w/damn near any bullet now.

My 300saum also loves varget with the 168ttsx, I don't remember the load particulars though.

Here are the loads my 300 SAUM seems to prefer so far:

Brass - Remington
Primer - Federal GM215M

Hornady 165 gr BTSP, SST, or Interbond - 55.5 gr Varget or 54.5 gr Reloder 15 (OAL - 2.760")

Sierra 165 gr BTHP - 54.5 gr Reloder 15 (OAL - 2.760")

Barnes 168 gr TSX - 49 gr H-4895 (OAL - 2.760")

Swift 180 gr A-Frame - 61.5 gr Reloder 19 (OAL - 2.77")

(I would do more load development, but I don't need anything more than the Hornadys where I hunt, although, I do have some test loads of RL-17, Superformance, and AA2700 loaded up with Sierra 165gr SPBT I still need to shoot one of these days).

What kind of velocitys are you getting with the Swift 180s and r-19?

I don't know, sorry haven't chrony'd it. I don't use that load, I would on tougher game like hogs, elk, and moose, but haven't gone out of state on a hunting trip in a while, so haven't needed it. (Besides, A-Frames aren't cheap).

Swift has the max charge of 64 gr at 2,831 fps, and the starting charge of 59.5 gr at 2,602 fps. That would put my load around 2,716 fps, minus roughly 50 - 100 fps out of my 22" barrel and sloppier chamber, so I'm guessing around 2,600 - 2,670 fps. BTW, I worked all the way up to 64 gr, but had the best accuracy at 61.5 gr by far, so settled on that.

I only tried IMR 4064 and varget. The varget was a winner right off the bat. I did pick up some RL17 and I want to try that with the 168ttsx.

Yeah, the 165s really seem to like Varget and Reloder 15 in my rifle, that's for sure.