338-378 lineman
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- Jun 15, 2010
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- 5
Does anyone have any load data for 250gr sierra game kings.
338-378 load data
- Thread starter 338-378 lineman
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Long Time Long Ranger
Well-Known Member
122-124 grains of H-870 was my best load when I shot that bullet years ago when it first came out. it shot right at 3300 fps out of a 28" barrel.
idaho elk hunter
Well-Known Member
Rl 25 with 112 gr and a win MAG primer loaded out to 3.86 coal will run HARD. I have foung the Sierra/ Hornady/ Berger etc do not respond well to the Weatherby Freebore. You might try the Thicker Accubond, Barnes 265 LRX, Hornady GMX , Cutting edge, etc. Of your shooting a factory barrel these will ALWAYS shoot better in the Weatherby freebored rifles. Step up to the 300 gr Accubond or the 280gr LRX barnes vita vouri n 570 or RL33 really does the job. You should push the 250 gr loads about 3250 and the 300 gr loads 3100. I specialize in building Weatherby only rifles and loads. This info is SOME
of the tricks to a Weatherby out performing any other cartridge.
of the tricks to a Weatherby out performing any other cartridge.