Raven / Davis Slide dissection

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Raven / Davis Slide dissection

Postby adam01364 » Sun Oct 06, 2013 5:41 am

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Re: Raven / Davis Slide dissection

Postby David Vincent » Sun Oct 06, 2013 10:10 pm

I did this to a raven slide once. Sometimes the breech blocks get loose and have a little play forward and backwards. I have never seen a major failure from this happening its just something I noticed. I am not sure what could really happen in the way of a catostrpphic failure. I dont believe it to be caused by the actual fireing presure of the weapon. It seems to be caused by the lip of the cartridge rim wearing out the zamak before hitting the plug during feeding. The zamak wears away and creates a ridge that hangs up slightly on the rim when the slide moves to the rear.

the small caliber jennings 22s and 25s do not have the breech block and are straight zamak. Nor do many of the lorcins. Sundances are straight zamak as well. It appears that the 25s dont really need the plug. Ravens seem to be overengineered in this area but thats a good thing. All the larger caliber zamaks I have seen have the plug. Hipoints all have them as well but they are a little different.

Its also interesting on some of my ravens and davis pistols that the plugs changed throu the years. Some plugs are much longer than others. Not really sure what the deal is there.

Anothermtheory I have is that these steel plugs cause the fireing pins to break more frequently. I have never had a fireing pin break on a jennings 22 or 25 and its more rare with lorcins and sundances. Ravens seem to break more often. Maybe the softer cast pin hiting the hardened steel plug has a role in this. Its just a theory though.
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Re: Raven / Davis Slide dissection

Postby Kiln » Tue Oct 08, 2013 6:25 pm

A picture is worth 1000 words in this case. I knew there was a steel breech block in the P380 after magnet testing my grandad's but I had no idea it was that large or robust.
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Re: Raven / Davis Slide dissection

Postby Flowmaster » Fri Nov 08, 2013 10:13 pm

First off, awesome. I like how the block is knurled.

I agree on the firing pin breakage thing. I bet a firing pin striking soft zamak would last pretty long versus a metal on metal collision.
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