Re: 180gr 300WSM loads? favorites?
My Tikka T3 really likes the 180 Accubond. Here are some of my results using CCI 250 primers and loaded to a max magazine length of 2.90":
Most economical load - 64.0gr H4350 (max load), 2950 fps, 1.0" @ 100 yds
Most muzzle velocity - 67.5 gr RL17 (over pub. max), 3030 fps, 0.75" @ 100 yds
Most accurate load - 68.5 gr RL22 (max load), 2835 fps, 0.63" @ 100 yds
As you can see there's not a lot of difference. My Tikka has a lot of freebore and is most accurate at, or slightly above, max published loads. Be careful and work your loads up for your rifle.
I also tried the 200 Accubond with 62.0gr H4350 (max load), 2700 fps, 1.25" @ 100 yds. However, this load showed pressure signs and wasn't quite accurate enough for me. I'll probably try some RL22 but the length of the bullet will most likely prevent me from getting all the powder in.
In 2009 I shot a cow elk with the 180 NAB H4350 load. She was trotting and I misjudged the lead at 300 yards. The bullet struck her in the neck just ahead of the left front shoulder. She went went right down and by the time I paced off the 300 yards she was taking her last breath.