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Forum: 300 Whisper Ammo and Reloading 11-25-2008, 10:46 AM
Replies: 21
Views: 3,537
Posted By jinx44
Chronograph came in yesterday. I went with just...

Chronograph came in yesterday. I went with just an entry level, cheap one as my first chrono. Its the Shooting Chrony F-1 Master with the remote display.

Of course, it was dark when I got off...
Forum: 300 Whisper Ammo and Reloading 11-11-2008, 05:46 PM
Replies: 21
Views: 3,537
Posted By jinx44
Since progress has been put on hold until I can...

Since progress has been put on hold until I can get my hands on a chronograph, I thought I would make a change that I have been wanting to do. When I picked up the parts for the build, I was able to...
Forum: 300 Whisper Ammo and Reloading 11-10-2008, 02:48 PM
Replies: 21
Views: 3,537
Posted By jinx44
I have been wondering the same. Tonight I am...

I have been wondering the same. Tonight I am thinking of going to 12.2 grs, which should definetly be supersonic and compare the sounds.
Forum: 300 Whisper Ammo and Reloading 11-10-2008, 10:54 AM
Replies: 21
Views: 3,537
Posted By jinx44
I had a chance to play with some 1680 yesterday. ...

I had a chance to play with some 1680 yesterday. Cycling problem has been fixed with this powder. I started with 11.0 gr and still heard a crack. 45* air, and I think we are roughly 450'...
Forum: 300 Whisper Ammo and Reloading 11-09-2008, 12:58 PM
Replies: 21
Views: 3,537
Posted By jinx44
Well, I am pretty sure if I would have left that...

Well, I am pretty sure if I would have left that bullet in the barrel, and shot another round, it would be accurate enough to stack bullets on top of one another. LOL

The crack I am hearing is...
Forum: 300 Whisper Ammo and Reloading 11-08-2008, 11:40 AM
Replies: 21
Views: 3,537
Posted By jinx44
Update: I am still using AA #9 due to no...

Update:

I am still using AA #9 due to no local shop having 1680 in stock. I started cutting the buffer about a coil at a time, then a 3 coils shorter than factory, the rounds started having...
Forum: 300 Whisper Ammo and Reloading 11-06-2008, 11:16 AM
Replies: 21
Views: 3,537
Posted By jinx44
Gas port is Carbine length. I would think...

Gas port is Carbine length.

I would think 42,000psi would be plenty to cycle the action?

What length is everyone else loading the 220 SMKs to?
Forum: 300 Whisper Ammo and Reloading 11-05-2008, 03:19 PM
Replies: 21
Views: 3,537
Posted By jinx44
Interceptor, thanks for the info. All of the ARs...

Interceptor, thanks for the info. All of the ARs I have had in the past were .223, so I have never had to deal with cycling issues.

I am using the rifle length extension tube. I believe I have a...
Forum: 300 Whisper Ammo and Reloading 11-05-2008, 11:19 AM
Replies: 21
Views: 3,537
Posted By jinx44
Well, I found part of my problems. The brass I...

Well, I found part of my problems. The brass I started with was S&B .223 Remington. The case was obviously too thick. Last night I loaded some winchester brass and my loaded neck diameter was .331...
Forum: 300 Whisper Ammo and Reloading 10-31-2008, 12:39 PM
Replies: 21
Views: 3,537
Posted By jinx44
Initial loading issues

I assembled an AR in .300 whisper with parts from a local dealer. I believe the barrel is a J&T. My dies finally came in yesterday and I started to load some rounds last night but encountered...
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