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2011 SHOT Show update on investment cast-steel I dropped by the CZ-USA booth to speak with somebody knowledgeable about their rifle production. According to Intl. Sales Mgr. Richard Zapletal, all ZKK-602 and CZ-550 rifle receivers are investment cast. He was quite sure about this, knowing...

ZKK-602 may be investment cast Although a CZ factory rep stated that the 550 Magnum rifles are forged, one source believes that the ZKK 602s are investment cast: So many conflicting sources about this. _______________ btw, my vintage Mad Dog knives are for sale...

The only thing I've heard about Ruger M77 barrels is that they apparently wear more quickly than other mfg. I've not read any actual comparative testing on that point, however. _________ It's been 6 months since my 8 July 2010 offer, and still no metallurgist or "materials scientist"...

Meta, I agree that Capitalism can produce superlative products . . . but only when the market demands them. For a Dangerous Game rifle, I can have (in my qualitative order) a: Ruger M77 African CZ 550 BRNO ZKK 602 Win M70 Classic Express Ed Brown M-704 Express Dakota 76 African Grade...

It's been two months now, and still no takers. In this economy, $500 is nice coin for proving such a theory. Will some hungry metallurgist step up? Unless . . . it cannot be proved . . . Boston

CZ 550 rifles being cast vs. forged? When I wrote Safari Dreams, I believed that the Brno 602 and CZ 550 Magnum rifles were of forged steel receivers. After publication, I began to find many reports that they might be investment cast (especially the 550). Because of the CZ's bargain price...

While I respect his pattern steel knifemaking ability, he does not cast and forge his own material for knives (and certainly not for gun receivers). McClung has no degree in metallurgy or engineering or science, yet few can discern that from his ex cathedra pronouncements. Dane...

Wondering where else McClung had referred to "high carbon cast steel" in his forum, a search was made and these two posts were found (bold emphasis added): Again and again, McClung refers to "high carbon" cast steel as suffering from dendritic carbides. OK, fine, nobody is arguing that...

A thorough review of my email history with McClung reveals that even after a lengthy January 2005 exchange about his theory, he still apparently didn't know that the Brno/CZ rifles were made from investment cast steel. (Neither did I back then, else I'd have asked him about the evident...

Smith Enterprise investment cast M14 Quite true; thanks SlamFire1. Here is a quote from a very in-depth M14 study, and one which I wish I'd found in time back in 2007. (bold emphasis mine) Fake reputations, habits of glib and clever speech, and glittering surface performance...

migkillertwo, the whole thread has been about steel, not aluminum. Different metals, different properties. Boston

At this point, I'm curious where McClung dredged up his theory in 2001. I've not found a whiff of it anywhere else. Perhaps it's correct only for +0.83% carbon knife steel but he didn't realize that and misapplied it to 0.40% carbon gun steel. All these "failure paths" amongst...

McClung and his investment cast steel rifles Since my last post here, I have continued to search for any supporting evidence for McClung's theory, with no success. If anything, it gets "curiouser and curiouser". Up until May 2001, McClung was touting the (investment cast) CZ550 safari...

I ran across this old thread searching for some load data, and had a few thoughts. I've hunted Africa two years in a row with a Marlin .45/70 using 300gr Barnes TSX/2000fps and 350gr Swift A-Frame/1800fps from a 17" barrel (pre-Guide gun, like they read my mind!). The best velocity...

DHS negative contact with BGB buyer confirmed BTP UPDATE: I had a face-to-face conversation with the bookstore manager and one of her employees. While some of the details of the original report were slightly incorrect, I did however confirm that Boston's Gun Bible is on some kind of DHS...

I did not allege that it was, especially mentioning an incident from the 1990s. Hair-splitting. "DHS agent" is what was told to me by customer, who heard it from the owner. Besides, there are indeed DHS badges...

For registered members of the FSW forum, the relevant link is: Boston's Gun Bible apparently on the DHS blacklist http://www.fundamentalsoffreedom.com/fswforum/index.php?topic=7512.0 That's true. Here's my take, subsequent to my original mention: I have spoken face-to-face with one of...

M1A barrel failure and KB Somewhat related to this thread, and interestingly it regards the failure of a roll-forged barrel because of poor heat-treating. I've quoted it below, but refer to the tech article for accompanying photos. The backstory of this KB at...

Thanks, John, it's very kind of you to say so. Boston

Update from Boston Having spoken to Ron Smith at length about all this at 2008 SHOT, I am obliged to relay the gist of the conversation here. Ron termed the overreliance upon forged steel as "Celtic/Druid bullsh*t" which floored me coming from such a master of forged steel gun parts and...