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Forum: 300 Whisper Ammo and Reloading

11-23-2010, 01:40 AM

Replies: 24

300Whisper in the AR-15

Views: 4,779

Posted By robrob

I haven't lightened the carbine buffer yet but...

I haven't lightened the carbine buffer yet but cutting off about 3 coils from the carbine buffer spring allows reliable function with 220gr subsonics, both Hornady round nose and Sierra SMKs. It will...

Forum: 300 Whisper Ammo and Reloading

11-21-2010, 03:54 PM

Replies: 24

300Whisper in the AR-15

Views: 4,779

Posted By robrob

I'll give the Vicegrips a try on the buffer tip....

I'll give the Vicegrips a try on the buffer tip. I'm going to go with corncob media to fill the void created by removing the weight. Someone on this forum used it and I've got lots of it available.

Forum: 300 Whisper Ammo and Reloading

11-21-2010, 12:38 AM

Replies: 24

300Whisper in the AR-15

Views: 4,779

Posted By robrob

I have a standard 16" Model1Sales 300 Fireball...

I have a standard 16" Model1Sales 300 Fireball carbine upper with the carbine position gas port. I removed the 4 rail gas block to drill out the port and block and found that they were already 1/8"...

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