Quarterbore.Net Forums

Go Back   Quarterbore's Forums > Search Forums
Reload this Page Search Results
Home Forums Classifieds Photo Server FAQ Members List Calendar Search Today's Posts Mark Forums Read

Showing results 1 to 15 of 15
Search took 0.00 seconds. Search: Posts Made By: JFettig
Forum: 300 Whisper Rifles and Pistols 08-26-2010, 12:02 AM
Replies: 47
Views: 7,995
Posted By JFettig
I'm sneaking up on the port size for him so he...

I'm sneaking up on the port size for him so he has a better chance at running supersonic rounds, last time we were out(first stab at the port diameter) it ran 75% lock back so I opened it .004". It...
Forum: 300 Whisper Rifles and Pistols 08-24-2010, 09:57 PM
Replies: 47
Views: 7,995
Posted By JFettig
Here is the one I built for a friend.

Here is the one I built for a friend.
Forum: 300 Whisper Rifles and Pistols 08-13-2010, 08:21 AM
Replies: 47
Views: 7,995
Posted By JFettig
My next project is to take the evo barrel and...

My next project is to take the evo barrel and figure out how short it can go, I've got 2 gas ports(third is plugged) to play with in 2 positions. I'll start at 6" and work down from there.

I've...
Forum: 300 Whisper Rifles and Pistols 08-12-2010, 09:51 PM
Replies: 47
Views: 7,995
Posted By JFettig
My friend saw mine and begged me to build him one...

My friend saw mine and begged me to build him one :grin:

http://stuff.jfettigmachines.com/300w/tn_IMG_2094.JPG

We're just waiting for his gas block to get in so I can fit it to give him a nice...
Forum: 300 Whisper Rifles and Pistols 07-24-2010, 12:50 PM
Replies: 47
Views: 7,995
Posted By JFettig
Here is mine :grin: ...

Here is mine :grin:

http://stuff.jfettigmachines.com/300w/tn_IMG_2063.JPG
Forum: 300 Whisper Rifles and Pistols 07-14-2010, 08:53 AM
Replies: 47
Views: 7,995
Posted By JFettig
Now that I think about it some more, It should be...

Now that I think about it some more, It should be feasable with an adjustable block but it might be finicky. I mean think about how finicky 5.56 is through a 7.5" barrel.

If all goes as planned,...
Forum: 300 Whisper Rifles and Pistols 07-13-2010, 10:56 PM
Replies: 47
Views: 7,995
Posted By JFettig
I didn't have much to go off of with quick load...

I didn't have much to go off of with quick load but it looks like pressures will be at least 1.5x on a 125gr bullet traveling 1600fps out of a 7" barrel.

I have a bunch of 160gr bullets that...
Forum: 300 Whisper Rifles and Pistols 07-13-2010, 08:52 PM
Replies: 47
Views: 7,995
Posted By JFettig
I think it is an evolution, not being able to...

I think it is an evolution, not being able to shoot supersonic rounds will be a turn off for some. I'll be making up a fixture for making gas tubes soon.

Jon
Forum: 300 Whisper Rifles and Pistols 07-12-2010, 08:43 PM
Replies: 47
Views: 7,995
Posted By JFettig
Looks good Spook, Keep in mind that the...

Looks good Spook,

Keep in mind that the shorter gas system is probably not optimal for supersonic high pressure rounds, I haven't run quickload on it but I bet it would have too high of pressures....
Forum: 300 Whisper Rifles and Pistols 07-06-2010, 10:28 PM
Replies: 47
Views: 7,995
Posted By JFettig
Hopefully testing tomorrow :grin: ...

Hopefully testing tomorrow :grin:
http://stuff.jfettigmachines.com/300w/tn_IMG_2000.JPG

-edit- shot flawlessly, hit the gas port diameter first try, locked back positively without too much gas.
...
Forum: 300 Whisper Rifles and Pistols 07-04-2010, 01:09 AM
Replies: 47
Views: 7,995
Posted By JFettig
Loooks pretty close to what I'm about to do soon...

Loooks pretty close to what I'm about to do soon with a barrel I have sitting here :)
Forum: 300 Whisper Rifles and Pistols 06-13-2010, 02:45 PM
Replies: 47
Views: 7,995
Posted By JFettig
A tall gas block would not fit under a standard...

A tall gas block would not fit under a standard FF tube, it would fit under glacier guards though. The one pictured would fit under a FF tube. I have a similar one on my 300/221.

I don't think I'd...
Forum: 300 Whisper Rifles and Pistols 06-13-2010, 01:37 PM
Replies: 47
Views: 7,995
Posted By JFettig
http://ar15barrels.com/tech/223plot.gif from...

http://ar15barrels.com/tech/223plot.gif
from ar15barrels.com

The port size determines the pressures your system sees. Time under pressure is another factor too.
Forum: 300 Whisper Rifles and Pistols 06-13-2010, 11:38 AM
Replies: 47
Views: 7,995
Posted By JFettig
Visual aid added. Also in the picture is a...

Visual aid added.

Also in the picture is a rifle length gas tube, cut it off at the length you need less than pistol length and profile it, along with a taller gas block you can use a straight...
Forum: 300 Whisper Rifles and Pistols 06-09-2010, 08:19 AM
Replies: 47
Views: 7,995
Posted By JFettig
Sounds like you need a custom length gas system. ...

Sounds like you need a custom length gas system.

What you can do is make a high gas block, take a rifle length tube, cut it and turn the end and have a straight tube. I actually used a piece of...
Showing results 1 to 15 of 15

 
Forum Jump

All times are GMT -4. The time now is 03:13 AM.
Contact Us - Quarterbore's Forums - Archive - Top

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.