Home Forums Reloading Big Game Rifles 300 WSM pet loads?

What are your favorite loads for this round?

Win Brass 62.5gr W760 with 168gr TSX, WLR primer. Just under 3000fps in my 24 inch Barrelled MRC. 1/2inch to 3/4 inch 3 shot groups at 100m.

There is another accuracy node @ 3,150 fps but brass got a bit tight to extract.

Regards
JohnT

Federal "Blue Box" 180's, I haven't found a load faster or one that'll shoot any better.

Dober

64 gr's H4350, Fed 210 primers, WW Brass and either a 180 grain Nosler Partition or Hornady.

WW brass, Fed 215 primer, 67gr W760 under the 150 NP. It goes 3275 FPS or so and shoots well under MOA in my Kimber Montana when i do my job

WW brass CCI 250 primer 69g IMR4350 (this is over book max..start low and work up) 165g tsx 3106 fps and just at 1 moa ave group size. Ruger M77 MkII stainless 22" barrel

Ditto the IMR 4350 (grains load not specified) and Sierra 165 btsp. or 150 ballistic tips (though their a bit explosive).

What'd they do for FPS Dober?

Thanks guys, I've tried IMR4350 with 150 gr bullets and IMR4831 with 165 and 180's with decent results. My best load so far has been (OVER MAX LISTED LOAD, WORK UP) 68gr of IMR 4831 under a 165 gr Partition running 3040FPS and grouping just over 3/4".

I noticed in my notes that RL19 with 165 gr bullets I just couldn't get any velocity out of my Sako. RL22 was even worse.

Any ideas on RL17?

I could never get decent speed out of R19 or R22 either.

Learning how to reload on a couple different(picky?) Sako .300WSM's(roughly 800 rounds of various cobblelations) puts H4350 in the lead for all around good powder. Brad got me started on it and it works.

N550 is a good choice for the 150/165's but it is scarce and spendy. IMR4831 goes well with 180's.

Notes show some 'better' loads at
2930-80 with 180's
3050-3130 with 165's
3075-3250 with 150's

Mostly Nosler bullets, 215's or 250's(nearly identical fps, accuracy BTW) and W/W or Federal brass.

Federal Premium Power Shok Ammunition 300WSMC, 300 WSM, Soft Point, 180 GR, 2970 fps, 20 Rd/bx
Stock # [SS68272]

So far H4350 has been doing the best for me so far mostly shooting 165 - 168 grain bullets. Got some rounds loaded up with 168 TTSX Ramshot Hunter and std WLR primers going to test out this weekend. This will be my 1st test with Hunter powder. Anyone else tried Hunter in the 300 WSM?

WW Brass, WLRM primer, 71.2gr of H4350 under 150gr Hornady Interbond @ 3,336 fps. Three shots= .571"

This load is just a little over max but shoots great out of my Winchester Ultimate Shadow SS and shows no signs of pressure.

WW Brass, CCI magnum primer, 67.5 gr IMR 4831 behind a 165 Gr Scirocco, I get 3112 fps. Groups are between 1 to 1 1/2 inches.I am working on using a Barnes 168 gr xlc in front of 71 gr IMR 4831.

Sam-just found my notes, the load ran along @ 2996 fps.

I also shot 180 Slicks (NBT's) that night and with 64.5 of H4350 it ran @ 2911 fps and was definately too warm in this rifle and needs to be backed down at least 1 grain ....


Doober

180 grain Accubond, Winchester case, CCI 250 primer, 65 grains of H4350. 2983 FPS in my rifle, accuracy about 1/2 MOA

Thanks Mark, most of the factory stuff(180's) I clocked went around 2970-2990fps as well.

2920-2950fps with handloaded 180's/H4350 is top end for sure with the Sucko.

I'm headin' out the door in a few to go launch and few 150 PT's and Horn's. Hopefully the Interlocks dupe out OK.

R the 150 Horns flat bottoms and or bt?

If flat bottoms I be 4 betting that they rock!

I a friend from the valley who's worked extensively and exhaustively with a dozen or so 300 shorts, and with the 180's he's convinced that 2900 is the top end to run them at(he know's we can push them harder). I mean this fella's probably done more load devel work than Win....grins

Have a good shoot and stay clear of those buzz tails...

Doober

They are the flat bottoms Dober, wanna take a wild guess where I came up with that idea? Someone here has been pimping them for years.

I'll stay out of the tall grass, hopefully it's not too muddy. Chrony won't get dusted that's for sure.

Some smarmy perro I'd imagine...

Doober