Forum: 300 Whisper Ammo and Reloading
12-31-2010, 08:39 PM
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Replies: 3
Views: 1,377
I found it.
52,000 for 221 Fireball brass ...
I found it.
52,000 for 221 Fireball brass
55,000 for 223 Rem Brass
So yeah AA#5 would be too fast with the 125s. But it does work beautifully in contender with 6grs under a 240 SMK.
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Forum: 300 Whisper Ammo and Reloading
12-29-2010, 03:30 PM
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Replies: 3
Views: 1,377
Sierra 125 SPT
Sierra Reloading manual shows Maximum load with AA#5 for a 125 gr. SPT to be 12.6gr. This produces 1800 fps out of a 10" Contender. Is this Maximum load based on pressure capacity of 221 Fireball...
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