View Full Version : 300 build
eskimo1
10-15-2009, 04:23 PM
About to start my whisper build but got to wonder about the headspace gauge. Can i use a 221 Fireball gauge? Iīm cutting the chamber with a 221 reamer and neck/throat with another reamer. I believe there is a difference in case lenght between the whisper and Fireball, thatīs why iīm asking. Thanks
sharky47
10-15-2009, 04:35 PM
I *think* you should be able to use the same gauges, the only difference between .300 Whisper and .300/.221 fireball is from the neck of the case forwards, just to get around patent crap. Since the headspace on non-rimmed bottleneck cartridges is off the neck - you should be good to go.
hitman49
10-15-2009, 09:38 PM
Yes you can use a 221 gauge to headspace a 300 whisper. Have done it on a couple barrels for my savage.
eskimo1
10-24-2009, 05:10 AM
Thankīs for answering. Will probably do the build on a Sako 75 222 Rem. The old barrel will be 221 Fireball:smile:
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