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 0.01 seconds. Search: Posts Made By: AR15barrels
Forum: 300 Whisper Ammo and Reloading 07-09-2007, 05:05 PM
Replies: 22
Views: 4,526
Posted By AR15barrels
I happened into an old 500ct box of 250gr Sierra...

I happened into an old 500ct box of 250gr Sierra MK's on eBay several years ago and I have been using them sparingly.
Forum: 300 Whisper Rifles and Pistols 07-09-2007, 04:53 PM
Replies: 6
Views: 3,042
Posted By AR15barrels
It's not uncommon for twist rates to vary +/-...

It's not uncommon for twist rates to vary +/- 1/2" in "production grade" barrels so a 1:10" twist can run anywhere from 1:9.5" to 1:10.5"
That's why you may buy two barrels of 1:10" twist and one...
Forum: 300 Whisper Rifles and Pistols 09-23-2005, 07:26 PM
Replies: 5
Views: 2,869
Posted By AR15barrels
Nicolas- PTG's reamer book is all REAMER...

Nicolas-

PTG's reamer book is all REAMER dimensions.
Don't confuse reamer dimensions with cartridge dimensions, they are certainly different so that the loaded cartridges will fit into the...
Forum: 300 Whisper Rifles and Pistols 09-23-2005, 07:15 PM
Replies: 11
Views: 5,454
Posted By AR15barrels
Using the 650, I pull the handle fast and then...

Using the 650, I pull the handle fast and then slow down just as the cutting starts.
This is for a couple reasons.
First, when the cutter first hits the 223 case neck, the shoulder of the case has...
Forum: 300 Whisper Ammo and Reloading 08-29-2005, 03:32 PM
Replies: 1
Views: 2,015
Posted By AR15barrels
Depends on your chamber. 300x221 is NOT a SAAMI...

Depends on your chamber.
300x221 is NOT a SAAMI or CIP approved cartridge so there is no standard dimension.

0.335" or 0.336" is a pretty common reamer diameter at the neck.
I have also been...
Forum: 300 Whisper Rifles and Pistols 08-29-2005, 03:19 PM
Replies: 4
Views: 3,438
Posted By AR15barrels
Then throw this into the mix: ...

Then throw this into the mix:
www.ar15barrels.com/gfx/jp-blocks.jpg (http://www.ar15barrels.com/gfx/jp-blocks.jpg)

I also have plans to offer a proper adjustable pistol-length gas tube, but I am...
Forum: 300 Whisper Rifles and Pistols 08-29-2005, 03:13 PM
Replies: 11
Views: 5,454
Posted By AR15barrels
Case trimming in the bridgeport

When I first started, I did this as well.
I did not do a set of soft jaws for the CNC machine though.
I just bored a single hole and did one at a time on the hand-crank mill.
A 3/8" endmill...
Forum: 300 Whisper Rifles and Pistols 08-29-2005, 03:06 PM
Replies: 78
Views: 20,840
Posted By AR15barrels
I understand the logic when there is a $500...

I understand the logic when there is a $500 difference, but also realize that you are buying a $70 shaw barrel at the $500 price point.

$1000 is on the high side for a complete upper considering...
Forum: 300 Whisper Rifles and Pistols 08-29-2005, 02:41 PM
Replies: 5
Views: 2,869
Posted By AR15barrels
Midway is selling ECT brand floating pilot...

Midway is selling ECT brand floating pilot reamers which are just Pacific Tool & Gauge reamers that Midway has branded with the ECT name.
Good tools!
My 300x221 reamer is a PTG floating pilot I got...
Forum: 300 Whisper Ammo and Reloading 08-29-2005, 02:37 PM
Replies: 1
Views: 2,212
Posted By AR15barrels
John- I have not found FC brass to be as...

John-

I have not found FC brass to be as thin as you quoted.
I ran into problems with neck diameter.
My reamer measures 0.336" at the neck base and at the case mouth.
FC brass was running from...
Forum: Other Subsonic Topics 08-29-2005, 02:13 PM
Replies: 5
Views: 3,272
Posted By AR15barrels
338 #2 headspace

You would not actually headspace the 338 #2 on the rim, but on the case mouth.
Headspacing rifle cases on the mouth just sucks.
The case is long enough that length variation from firing and sizing...
Forum: 300 Whisper Ammo and Reloading 07-13-2005, 01:33 AM
Replies: 5
Views: 2,003
Posted By AR15barrels
I have just recently taken a 7TCU forester seater...

I have just recently taken a 7TCU forester seater and made a new floating chamber to seat bullets for 300x221.
I simply made a piece that replicates the 7TCU seating chamber, but used a 300x221...
Forum: 300 Whisper Rifles and Pistols 07-13-2005, 01:26 AM
Replies: 1
Views: 2,394
Posted By AR15barrels
Lose the softpoints. You are going to want...

Lose the softpoints.
You are going to want FMJ's, or something where the front of the bullet is more closed up.
As to feedramp mods, here is what M4 ramps look like:...
Forum: 300 Whisper Rifles and Pistols 04-27-2005, 03:28 AM
Replies: 11
Views: 5,454
Posted By AR15barrels
I make and sell a lot of 300x221 brass. I do...

I make and sell a lot of 300x221 brass.

I do it in a "semi-production environment" on a Dillon 650.
Starting with a casefeeder full of 223 cases, the stations go as follows:

#1 RCBS lube die...
Forum: 300 Whisper Ammo and Reloading 04-27-2005, 03:10 AM
Replies: 2
Views: 1,581
Posted By AR15barrels
I sell 300x221 chamber gauges cut with the same...

I sell 300x221 chamber gauges cut with the same reamer I use for making barrels.
There are differences in reamer dimensions so you should really seek out one from the maker of your barrel.
If you...
Showing results 1 to 15 of 15

 
Forum Jump

All times are GMT -4. The time now is 01:43 AM.
Contact Us - Quarterbore's Forums - Archive - Top

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