338 RUM velocity estimates

montana_native

montana_native

Well-Known Member
Joined
Oct 4, 2008
Messages
665
Location
SW Montana
Just wondering if anyone could give me some ball park velocity estimates on a 338 RUM with 28" barrel, 1:9.5 twist with H-1000 and/or Retumbo

250 gr Accubond
and of course the 300 SMK

Thank you.
 
L

Long Time Long Ranger

Well-Known Member
Joined
Mar 12, 2002
Messages
2,612
Location
Wyoming
2775-2825 fps with the 300 SMK and 3075-3125 fps with the 250.
 
Last edited:
royinidaho

royinidaho

Well-Known Member
Joined
Jan 20, 2004
Messages
8,950
Location
Blackfoot, Idaho
I'll agree with LTLR's estimates. I'd lean towards the high side of the estimates as 28" it 2" longer than the barrel on mine.

91.2 gr Retumbo gives me about 2750 FPS MV @ 50*F.
 
W

wildworks

Well-Known Member
Joined
Apr 29, 2005
Messages
114
Location
MI
i get 2750 fps out of my 28 sendero ss fluted and 300 smk. with 74.5 gr retumbo.
 

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