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Old September 14, 2012, 01:03 AM   #1
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Join Date: September 11, 2012
Posts: 139
Snap caps & Pump action

in need of a few outside opinions.

I have had a question running through my mind whenever I pickup one of my private firearms, and I always seem to forget it before I am near a Smith.

I have bought 8 snapcaps in packs of 2's from 4 different companies.

When I put them in the following firearms I get the equivalent result :

Mossberg 500
I am able to cycle the first snapcap and get jammed yet liveloads fly through without problem.

Norinco Magfed 982H
I am able to cycle both snapcaps and liveloads through without problem.

870 Magpul
I am able to cycle a few snapcaps through and endup with 2 wanting to go in at once. normal load without problem.

I have swapped and mix matched the caps in every combo possible, yet always recieve a very similar result.

Any thoughts on this?! I was leaning to some sort of factory damaged or 'dud' caps, but once i started mix matching them I was at a loss.

Last edited by TheSILENTtype; September 14, 2012 at 01:53 AM. Reason: Needs to move to 'The Smith'
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Old September 14, 2012, 06:56 PM   #2
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Join Date: May 4, 2001
Posts: 7,054
Snap caps are snap caps. They're designed to "pad" the firing pin.
These may or may not be very close to the size of a real cartridge and aren't the same weight or balance.

If you want to cycle dummy rounds through the gun you need action proving dummies.
These are EXACT size, weigh, and balance dummy cartridges designed for testing the action.
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Old September 14, 2012, 07:10 PM   #3
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Join Date: September 11, 2012
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hey, i do have both provided and made dummy rounds. i was moreless curious about the snapcaps themselves. i guess missizing is the response.
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Old September 16, 2012, 03:13 PM   #4
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Location: Ohio
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I've read another thread on here before that suggested A-Zoom snap caps, although great, are deliberately undersized so that they won't get stuck in the chambers of firearms. If that's so, it seems their dimensions might cause some problems.
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