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Rifles, Reloading, Optics, Equipment
Reloading
300 Win Mag Load Development Help
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<blockquote data-quote="PApa Black" data-source="post: 1746833" data-attributes="member: 48563"><p>I encountered the same problem with my Winchester Mod 70 Laredo LRH ( it's old!) The mag well was to short to seat the Bergers properly. I would check the Berger Stability program to verify the twist rate and velocity is enough to stabilize the bullet. Then if that's a go, refer to the Berger seating procedure ( they can be difficult to shoot accurately at 100 yds. "Generally" those bullets don't go to sleep until +/- 300 yds. In my rifles they shoot the same group measurement at 100 & 500 yds! A 1-1/2" group at 100 shoot 1-1/2" group at 500 yds. Im my case the mag well would only allow the Bergers to be seated 0.258" off lands and function properly so I switched to the 180 gr Ballistic Silver tip.</p></blockquote><p></p>
[QUOTE="PApa Black, post: 1746833, member: 48563"] I encountered the same problem with my Winchester Mod 70 Laredo LRH ( it's old!) The mag well was to short to seat the Bergers properly. I would check the Berger Stability program to verify the twist rate and velocity is enough to stabilize the bullet. Then if that's a go, refer to the Berger seating procedure ( they can be difficult to shoot accurately at 100 yds. "Generally" those bullets don't go to sleep until +/- 300 yds. In my rifles they shoot the same group measurement at 100 & 500 yds! A 1-1/2" group at 100 shoot 1-1/2" group at 500 yds. Im my case the mag well would only allow the Bergers to be seated 0.258" off lands and function properly so I switched to the 180 gr Ballistic Silver tip. [/QUOTE]
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300 Win Mag Load Development Help
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