| DUGABOY1 |
| (.400 member) |
| 24/07/06 01:46 PM |
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Re: 9.3x74r - WHy did Ruger choose 1-20" twist rate???
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In reply to:
Standard rate of twist for a 9.3 is 1 in 14 and this will not work very well with super long bullets like the Barnes X unless the velosity is low like around 2700 FPS.
Max loads in a 9.3X74R is in the 2300 fps range, so 2700 fps is not realistic, and not a worry! The 1-20 twist is not realistic, either, and would not stablize the 286 gr bullet, and the 320 gr would be worse. You might have to go as low 120 gr bullet to get it to spin properly. I can't believe Ruger would put a 1-20" barrel on that rifle. That is the twist they use in the 45-70, which just stablizes the 400 gr bullet, and works best with a 300gr .458 dia bullet.
Like Faucett above, I am thinking about buying one , but not if the twist is going to be 1-20" twist! I-12, or 14" would be proper for the 9.3X74R~