Quarterbore.net

25-223AR barrels

320pf — Wed, 15 Sep 2010 19:07:49 -0600

by: 320pf

Description: 16,18,and 20 inch barrels chambered for the 25-223AR

6.35x43mm wildcat project

320pf — Sat, 31 Jan 2009 19:12:19 -0700

by: 320pf

Description: 25 cal wildcat based on 223 Rem/5.56x45mm. 223 case expanded to quarterbore and shortened 1.8 to 2mm. Very similar to the 257 Kimber and 25 Copperhead and to the .25x40mm. Thanks Kurtz for concept.

2 comments

what i did over a Sat afternoon

320pf — Sun, 02 Nov 2008 18:11:11 -0700

by: 320pf

Description: This is what I managed to crank out over a Saturday afternoon

Using a Forster power trim die to make 300-221 Fireball brass

320pf — Sun, 02 Nov 2008 17:14:59 -0700

by: 320pf

Description: If you have a drill-press, here is a quick way to make 300-221 Fireball brass using a Forster Power trimmer.

2 comments

Using a Forster power trim die to make 300-221 Fireball brass

320pf — Sun, 02 Nov 2008 17:14:59 -0700

by: 320pf

Description: If you have a drill-press, here is a quick way to make 300-221 Fireball brass using a Forster Power trimmer.

More Beta-C

320pf — Thu, 20 Mar 2008 21:09:02 -0600

by: 320pf

Description: Beta-C in 300-221 Fireball platform

More Beta-C

320pf — Thu, 20 Mar 2008 21:09:02 -0600

by: 320pf

Description: Beta-C in 300-221 Fireball platform

300-221 Fireball ammo in Beta-C mag

320pf — Thu, 20 Mar 2008 20:42:58 -0600

by: 320pf

Description: 300-221 Fireball ammo in Beta-C mag. Yes it fired all 100 rounds.

300-221 Fireball ammo in Beta-C mag

320pf — Thu, 20 Mar 2008 20:42:57 -0600

by: 320pf

Description: 300-221 Fireball ammo in Beta-C mag. Yes it fired all 100 rounds.

1 comment

223 in Foster power trimmer

320pf — Tue, 26 Feb 2008 22:09:05 -0700

by: 320pf

Description: Using Foster power trimmer to make 300-221 fireball brass

223 to 300-221 fireball brass

320pf — Tue, 26 Feb 2008 22:09:05 -0700

by: 320pf

Description: Using Foster power trimmer to make 300-221 fireball brass. Far left untrimmed .223 case Middle .223 case trimmed to 1.365 Right a sized 300-221 fireball case ready to reload.

2 comments

223 trimmed to 300-221 fireball brass

320pf — Tue, 26 Feb 2008 22:09:05 -0700

by: 320pf

Description: Using Foster power trimmer to make 300-221 fireball brass

New Sierra 135 HPBT MK

320pf — Sat, 26 Jan 2008 13:57:49 -0700

by: 320pf

Description: Comparison of the new Sierra 135g HPBT MK to the Speer 125g TNT, Sierra 125g SP GK, and Sierra 150g HPBT MK

300 Whisper QuickLoad Plot

320pf — Sun, 06 Jan 2008 08:49:26 -0700

by: 320pf

Description: 300 Whisper QuickLoad pressure-velocity plot. Courtesy Ar15 Barrels.com

1 comment

I found this photo on the web showing the accuracy potential for sub-sonic

320pf — Tue, 18 Dec 2007 22:20:58 -0700

by: 320pf

Forming 300-221 Fireball cases from .223 cases (Source Ar15barrels.com)

320pf — Tue, 18 Dec 2007 21:19:54 -0700

by: 320pf

Description: Here are the steps in forming 300-221 Fireball cases from .223 cases (Source Ar15barrels.com)

Forming 300-221 Fireball cases from .223 cases (Source Ar15barrels.com)

320pf — Tue, 18 Dec 2007 21:19:54 -0700

by: 320pf

Description: Here are the steps in forming 300-221 Fireball cases from .223 cases (Source Ar15barrels.com)

1 comment

300-221 Fireball Dissipater build

320pf — Sat, 08 Dec 2007 09:05:52 -0700

by: 320pf

Description: Top: 16-in. 1:7.5 Noveske barrel EO-tech site with JP comp Bottom: 16-in. 1:8 Olympic Arms barrel US Opitics 1-4X scope with BP-Tech comp.