Thursday, July 12, 2007

Wednesday, July 11, 2007

Canadian airgun forum :: View topic - CP99 Nighthawk conversion

Canadian airgun forum :: View topic - CP99 Nighthawk conversion

The nighthawk barrel and slide cover should be parts compatible with the CP99. A CP99B (black) is probably my next CO2 gun...

Airgun Depot's Airsenal News

Airgun Depot's Airsenal News

Tuesday, July 10, 2007

ArmsLocker Forums - Reloading the 5.7x28

ArmsLocker Forums - Reloading the 5.7x28

Probably already blogged, but I ran across this thread on ArmsLocker again.

Co2

Co2

Air Rifle Links and Demos

Air Rifle Links and Demos

Good illustration/animated demos of how things work.

Air Rifle Links and Demos

Air Rifle Links and Demos

Good illustration/animated demos of how things work.

CO2 Dynamics

CO2 Dynamics

FN Forum.NET :: Read message

FN Forum.NET :: Read message

From: wildeye111
To: Esteves
Posted: Wed Jan 31, 2007 8:05 am
Subject: Re: "Extra" EOTech
Hey Steve,

My apologies.
YES, those are QC issues. You can send those 75 back and I will replace them. The stainless steel ball gets coated with a glue then inserted into the projectile. The glue helps kept the ball seated at the tip of the bullet. There was either not enough glue and or polymer which is the reason you are hearing the rattle.

I was thinking about this "ball rattle issue" last night and wondered if this QC issue might even be a good thing? A few months ago I had made about 15 special explosive tip rounds for a customer in Kansas, MO to test out with kevlar vests and ballistic geleatin. I used the same stainless ball but also include a small blasting cap and explosive chemicals in front of the ball at the tip of the bullet. They flew perfect, but did not exploded on impact, or at least the person could not tell if it had when fired at the gelatin. However, what was noted was that there where a few tiny SSball size cavities in the Vest other than the main ones that where created by the bullet. I didn't give it much thought until now.

I think that the 75 rounds that you have may be a better explosive tip than what I was trying to accomplish. I see it as this... now that the ball moves freely..not sure by how much? but this being the case the ball can now be effected by the laws of physics..specificaly "Inertia" or momentum. This principal is similar to what happens to occupants of a car crash not wearing a seat belt. The free moving ball that is contained in the projectile should slam foward upon impact of a "fairly dense object" which should cause the jackets tip to expand/defrangment (explode) and allowing the ball to exit. I would like to test these rounds or if you are interested in testing them this would be fine as well.

Either way we can figure something out.

Talk again-
Wil

FN Forum.NET :: Read message

FN Forum.NET :: Read message: "From:Esteves
To:wildeye111
Posted:Tue Jan 30, 2007 12:06 pm
Subject:Re: 'Extra' EOTech
wildeye111 wrote:
Hey Steve,

Here is the UPS tracking # 1ZR53W230395244021.
Thanks again for the trade- talk again.
Wil


Hi, Wil,

The package arrived yesterday.
I haven't counted them all, but it looks like you might have included an extra 50 SS195 projectiles. If so, thanks!

I do have some observations about the 24grainers. It seems as though about half of them may have some quality control issues. I did a quick per-bullet inspection using a strong magnet and vigorously shaking and tapping each cartridge. Of the four boxes, about 75 rounds made it into my 'questionable' pile and either weren't attracted to the magnet or made a distinctive rattle when shaken or tapped.

Best,

--
Steve"

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