I have tried several powder/primer/load variations and seem no to be able to get tight groups.

Will anybody share favorite loads?

Thank you

75.5 gr RL-22 Fed 215 M Just touching the lands. Neck sized with a Lee collet die and seated with a Redding comp seater. I bump the shoulder back with a Redding body die when I need to. This load shoots well for me and has killed some nice muleys a long ways off.

73 grains (one rifle, a Rem 700) IMR 4831
72 grains (next = Browning A-bolt) IMR 4831
CCI 250 / OAL 3.545 / R-P brass for the 700.

Dad-in-laws loads -- left-handed rifles using 180-grain Ballistic Tips

75 gr of Rel 25..not all that fast, but had great groups, and the Kudu Blesbok etc, never knew it.

77 grains of H4831. Around 3050fps depending on your shooter.

74.0gr of RL 22 with Federal 215 primers with 180gr Accubonds in my Sako m75ss 300WM shoots well under 0.5" groups all day long at the range.

My friend's rifle identical to mine shoots 75gr of RL 22. Going to try WS780 in his next.

IMO RL22 IS the POWDER for the 300WM.

8 out of 16 Elk hunters in my group use 180 grain Nosler Partitions or North Forks or Accubonds with 76 grains of RL-22 and Fed 210 or 215 primer. For us the RL-22 is magic with the .300 Winnie. Many kills for many years. Good shooting.

Some guns just don't like some bullets. I get outstanding groups from my Sako .300 H&H with both the 180 B.Tip and the 180 Accubond (never exceeding 3/4"). However, my virtually identical Sako .300 Win doesn't seem to like either bullet nearly as well.

Other calibers in which I use Accubonds also do well with them, so I don't think there is anything intrinsically wrong with Accubonds -- you may simply need to switch to another bullet to get the best accuracy. You might be surprised, but it is possible that Partitions could give better accuracy in your particular rifle. Either should kill an elk/moose/bear as dead.

FWIW, I have found RL-25 to provide the mosty optimal velocities in a .300 Win.

Thank you all for your replies - I'm pondering!!

Muzzle velocity is about 2,850 fps and I just love what it does to raccoons at 250+ yards.

My favourite load with the 180 Accubond is 76 gr. of N-165….not the hottest load ever but very accurate. Nb. The COAL is 91.75mm or 3.61”

82 to 83 grs of Re25 with 180 Accubonds = 3300 fps with 26.5" barrel. This is max, work-up to it. Deadly on everything. Regards, AIU

My rifle uses 80 grains of 7828 and the 180 grain partition. The 26 inch barrel produces 3152 FPS. The COL is 3.6 inches. CAUTION, DO NOT TRY THIS IN A STANDARD THROATED RIFLE!

Regards, Keith