300 RUM and Hammer Bullets

[AZShooter]

The 230 Berger is not "too dang long". Seat it to fit and feed from magazine and work up a load. The hybrid design will work with pretty much any distance from the lands.

 

[ButterBean]

Cheers!

I'm Average

 

[FEENIX]

I'm Average

L L, likewise!

 

[Hard rock]

And there's the correct answer, Thanks Brother, I got so many numbers in my head that I had forgotten the twist requirements for the 181's, I had 180's on my mind

I sure like the way you clear things up

 

[ButterBean]

I sure like the way you clear things up

I apologize

 

[Shane Lindsey]

FWIW I have done well with the 181s with RL22 and RL23 in my 1-8 twist RUM. Probably better with RL25/26 or H1000, but not any on hand.

You will definitely want to "overspin" them vice under. 1-10 in a 300 WM was not so consistent.

 

[ButterBean]

FWIW I have done well with the 181s with RL22 and RL23 in my 1-8 twist RUM. Probably better with RL25/26 or H1000, but not any on hand.

You will definitely want to "overspin" them vice under. 1-10 in a 300 WM was not so consistent.

Your thinking backwards on your powder, H4350 will make it a beast

 

[Shane Lindsey]

I don't like having RL23 in there no way I would want H4350. Not enough case fill.

Is there not a concern with uneven burn? Literally half of the case would not full. I could almost see it with the lighter pills, but these are conventional weights (thirty years ago).

I think that was a concern in the 300 Norma awhile back...uneven/uniform pressures from round to round based on they way it was stored/carried.

 

[Hard rock]

I apologize

No your good thanks

 

[redchinviking]

Your thinking backwards on your powder, H4350 will make it a beast

So should I try the 4350 with the 180's on my 300 rum 10 twist? All I have is h1000 (limited), retumbo (ample amounts), plenty of h4350, and slower us869 (useless). Mind if I ask for a starting point? Wish I knew powder black magic a bit better. I'd ask where do I take the class, but I think I'm in the right place…

 

[Calvin45]

RL23,H4831SC and H100V in that order

That rl23 is good stuff isn't it! It doesn't get the psychotic degree of obsession that rl26 does, but it also seems much more readily obtainable and every so often I peruse the load data for the hammers posted on this forum and it keeps popping up in interesting ways.

 

[TXAoudadKlr]

I got to thinking of this thread yesterday and am pondering if my 300AX could exceed 4000fps with the 124. Looking at a recoil calculator with rough figures on the 124gr i would shed ~6ftlbs of recoil or 20% over my 181gr load

 

[David F]

I have a lot of n570. Im gonna buy some hammers for my 300RUM and 300PRC. The PRC is a 1:8 twist CA Traverse. What weight of hammer with n570 for PRC? Has anyone gone with a lighter projectile and n570 in RUM? Just a refresher from my original post the RUM is a 1:10 twist Browning Abolt.

 

[Shane Lindsey]

I got to about 3400 FPS or so with 95gr N570 and the 181 Hammer Hunter.

3347 FPS with 97gr N570 and the 178gr Absolute Hammer. This one can go higher, but have not yet.