.300 WSM WOW!

[LVLAaron]

Both. .020 in and .015-.020 off are normalish. Theres bigger jumps too.

I seem to always end up about 18 off with any of the berger hybrids

 

[rothgyr]

I hope it's ok to resurrect this thread, I'm pretty new to this forum - I'm getting ready to have a long action WSM built out and reamed for running 220 hybrids. The consensus seems to h4350 for 210s and lighter, and RL23 as the magic powder for heavies, but in 2025, Reloader 23 and 26 are unobtanium/basically discontinued until further notice.

Has anyone had luck with 220-230 grain bullets with other powders? I saw that Mark and Sam After Work got up to 2900ish with H1000 (looks like they started to see some slight pressure signs) and Retumbo equivalents. I'm wondering what the WSM crowd is using as a replacement, or if they've all just switched over to PRC.

In case anyone lands here via google/search, looking for H1000 loads - I've tried two loads so far in a 30" bartlein. My "safe" load was 67.5 gr of H1000 and I got about 2750 FPS:



I took it out at 69.5 grains of H1000 last week and got 2851 FPS. No pressure signs that day, but I think I'm going to stop there. 2851 is plenty enough for me, and the accuracy was good by me.

My reamer was specced long, and I loaded 3.200" COAL. I'd never try this in a SAAMI spec chamber.