.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.

 

[Orr89rocz]

Midway has or had reloder 23, 86$ lb if anyone still uses that for the wsm

 

[Pinkes]

Sorry to resurrect an old thread, but will N560 work for the WSM? I have a lot available for my 300WM.
Is N560 as stable as N555?
Will be using 215s.

 

[ShootDots]

Sorry to resurrect an old thread, but will N560 work for the WSM? I have a lot available for my 300WM.
Is N560 as stable as N555?
Will be using 215s.

N560 is in the same burn rate range as RL-23 and H4831sc. I personally have never tried it. But if the aforementioned powders work (and they do) N560 should be just fine! BUT with 215+ grain bullets.

 

[Ranger188]

I run N560 and 215’s in mine on a recommendation from another member here. Gives better speed than RL23
I tried that first.

 

[323]

Have any of you tried H1000 with the 220’s?

 

[Willow]

Have any of you tried H1000 with the 220’s?

Not sure you can get enough powder in the case to drive the 220s competitvely...I run 64.6gr of H4831sc for the 220s with ADG brass. I reckon I would have to be up around 68gr which wouldn't leave a lot of room for the bullet, at least with my freebore.

 

[323]

I’m having jgs do the reamer using Manson specs of a .225 freebore. All of you running a 300 wsm what freebore you all running?

 

[quest450]

wrong picture, sorry

 

[50cal Derrick]

Has anybody ever had luck with N555 and the 220 grain hybrids using Lapua brass I have a 32 inch barrel?