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Loose .44 Gaschecks
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My RCBS .44-240 SWC casts boolits that measure about .401-.403 on the GC shank. (The shank is tapered and I am measuring it with a dial caliper.) The Hornady checks I have measure .400 inside and .436 outside. After sizing in a .431 Lyman die the boolit and the gas check are .434-.435 !? I can easily rotate the gas check on the boolit, or even remove it with only finger power. Could one of you .44 shooters measure your stuff to give me a comparison? I know something is wrong, but is it the gas check shank or the checks? Thanks in advance, curmudgeon
 
Posts: 99 | Location: Livermore, CA, USA | Registered: 22 December 2002Reply With Quote
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Oops, left out a zero. The bullets ate .4305 after sizing. curmudgeon
 
Posts: 99 | Location: Livermore, CA, USA | Registered: 22 December 2002Reply With Quote
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0.399" - 0.401" is ideal for 44 check shanks and your measurement for the check ID is correct. I share your confusion because it sounds like the checks should be tight, not loose. All I can think is that maybe the tapered shank is belling the check as the check is pushed on, but never heard of that problem before.
 
Posts: 97 | Location: Pocatello, ID | Registered: 24 August 2003Reply With Quote
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curmudgeon...My hornady 44 checks measure a little less then .400 inside. I have a Saeco 44 mould, 240 gr, truncated nose gascheck and the gascheck shank measures .405 to .406 on the boolits that I have cast. By the way the mould, two sizer dies, and a set of Redding Titanium dies are for sale. Don't shoot 44's anymore I'm too hung up on 45's. If interested email me at starmetal at naxs.net

Joe
 
Posts: 2864 | Registered: 23 August 2003Reply With Quote
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curmudgeon: Sounds like spring-back in the gas checks; have you tried annealing them? Lay a bunch of them, open side up on a piece of flat steel (1/16" - 1/8") bent into an "L" and clamped in a vise, and heat from below until the steel just starts to glow dull red in a dim light; then sweep the checks off into a pan of water. They should end up dead-soft (water quench does NOT harden copper alloys like it does steel). Soak in vinegar or brass cleaner if you want them shiny again. floodgate
 
Posts: 142 | Registered: 30 December 2002Reply With Quote
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Thanks to all for your replies, it's like having my own "brain trust". Looks like there is nothing dimensional I can put my finger on. Annealing will be the next thing I try, I am already familiar with annealing because of an OVERSIZE GC shank on a custom Hoch .35 mould. If that doesn't work, back to RCBS it goes. curmudgeon
 
Posts: 99 | Location: Livermore, CA, USA | Registered: 22 December 2002Reply With Quote
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Bill, you probably already measured, but the Saeco 431 boolits have a gas-check shank that runs .403-.405. This big requires separate seating and sizing, but they are NOT loose. Maybe that RCBS mould should go back, but getting them to change any dimension on a product is very, very, iffy. I tried once and gave up. Their warranty policy is great but does not include engineering changes, I found out.

duke, over and out.
 
Posts: 41 | Location: reno nv | Registered: 27 August 2003Reply With Quote
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Nevada...that isn't exactly true about RCBS. My friend and I were some of the first to use the then new 4x4 progressive reloading press. Well I found alot of design flaws in it which RCBS was very interested in and I worked with one of their engineers to correct it. RCBS doesn't make gaschecks that I know of so them may very well want the other brands to fit their bullets. Worth a try to call them.

Joe
 
Posts: 2864 | Registered: 23 August 2003Reply With Quote
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