On Tuesday, November 12, 1996 at 1:00:00 AM UTC-7, asm wrote:
# I need load data for a 25 Gibbs.

Mine is blown right out with a 40 degree shoulder and short neck. I shoot 67 GR. of RL 22 with 100 GR. Speer BT.

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On Wednesday, November 13, 1996 at 2:00:00 AM UTC-6, Gary Anglin wrote:
# asm6643@acs.tamu.edu (asm) wrote:
#
# #I need load data for a 25 Gibbs.
#
# Your best bet is to order the book on Rocky Gibbs from Wolfe
# Publishing.

Was it Gibbs that did some work on flash-tube ignition; i.e. an
extension tube from the primer pocket to ignite the powder in
the front part of the cartridge case first?

Peter Wezeman
anti-social Darwinist

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On Tuesday, November 12, 1996 at 2:00:00 AM UTC-6, asm wrote:
# I need load data for a 25 Gibbs.

25 Gibbs case fire forming

Here`s one way to fire form a 25 Gibbs cartridge. Start with 30-06 cases, use a 270 win. Full length Die. Slowly adjust the die down to resize a false neck to about 250 th. In length .Then use a 25-06 rem. (Again full length
die to help keep the case neck in alignment) Adjust the 25 die down to the
250 th .false neck length. This will create a bulge for the head spacing of the case. Doing this will help keep the neck in alignment with the body of the case.
Next prime the cases & use a good stout load of fast burning pistol power, around
10 to 13 grains of Alliant 2400 or whatever ya have. Next drop in a small piece of tissue paper to keep the powder in place, then fill the case about 80 % full of cream of wheat. Next fill the remainder of the case with more tissue paper & use something to help push it down, packing it as tight as possible. Sometimes I add
wax to help seal off the case mouth. Then apply a thin coat of oil to the case neck & shoulder area. If ya used a good stout load of pistol powder & packed everything
good an tight? you`ll blow the case out & have an almost sharp 35 degree shoulder
angle . Then anneal your cases, use your Gibbs die to resize & trim to length. Lastly use a 25 caliber outside neck turner to insure the wall thickness is correct.
Thick necks can create poor bullet release, causing high pressure spikes & poor alignment between bullet & rifle bore. Then load a 25 cal. Bullet seated out tight
to the lands, with a moderately light powder load to complete the fire forming of
a Gibbs cartridge. Always start with newer brass & always work your loads up slowly & safely. Rocky Gibbs once commented a Gibbs rifle with a longer barrel, makes a Weatherby with a short barrel, just another rifle & By God he was right.

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