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Joined: Sep 2007
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Campfire Tracker
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OP
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Joined: Sep 2007
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Glad there's lots of smart fellers here. I have a XP100 I can't identify the chambering. It started out as a 7BR and has obviously been rechambered. Grasshopper was nice enough to send me a dummy 7IMSHA, when chambered it won't extract and a 7/08 is too long. I suspected extractor issues, so I tried the suspect bolt in my other XP and it does extract.
I'm wondering if it would work if I use the cream of wheat fireforming on a 7IMSHA case then measure the case?
Thanks, Jim
Eagles may soar, but a weasel never got sucked into a jet turbine!
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Joined: May 2003
Posts: 3,286 Likes: 4
Campfire Tracker
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Campfire Tracker
Joined: May 2003
Posts: 3,286 Likes: 4 |
Take it to a gunsmith and have him make a chamber cast.
+Professional member American Custom Gunmakers Guild
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Joined: Sep 2007
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Campfire Tracker
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OP
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I'd like to, but the nearest 'smith is 110 miles. Karl Kenyon does live here, but he's in tough shape.
Eagles may soar, but a weasel never got sucked into a jet turbine!
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Joined: Feb 2001
Posts: 8,534
Campfire Outfitter
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Campfire Outfitter
Joined: Feb 2001
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I've used the cream of wheat method for fire forming 30-06 to 35 Whelen. It works great. a light charge of pistol powder, then fill to the top of the neck with cream of wheat. Got to hold it straight up to load and fire. Virgil B.
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Joined: Nov 2004
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Campfire Tracker
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Campfire Tracker
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you can drip candle wax over the top of the cream of wheat, or press in some play dough, or slice of Potato.
NRA Life Member
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Campfire Ranger
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Campfire Ranger
Joined: Mar 2006
Posts: 20,909 Likes: 1 |
You can order Cerrosafe from www.midwayusa.com and chamber cast it yourself. I would prefer that to anything else. 7mm chambers are so diverse there is no telling what it may be.
"I never thought I'd live to see the day that a U.S. president would raise an army to invade his own country." Robert E. Lee
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Joined: Jun 2005
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Campfire Ranger
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Campfire Ranger
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LOVE God, LOVE your family, LOVE your country, LIKE guns and sports.
About 2016 team "R" candidates "We definitely need a crew with a sack of balls the size of hot water bottles, bloviated estrogen leaking feel-gooders need not apply." Gunner 500
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Joined: Sep 2002
Posts: 458
Campfire Member
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Campfire Member
Joined: Sep 2002
Posts: 458 |
Do you mean the 7IMSHA is driven into the chamber so the extractor won't grab it? Or do you mean it sticks in the chamber? Be careful here.
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Joined: Sep 2002
Posts: 458
Campfire Member
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Campfire Member
Joined: Sep 2002
Posts: 458 |
I've fire formed with corn meal blanks using cast bullet lube to plug the neck. The thing is if it goes in to far to let the extractor grab it and still managed to get hit hard enough by that rebounding firing pin to set it off I'd worry about a head separation. I'd order the cerrosafe and do a chamber cast. It melts at very low temps. Just read up on it first.
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Joined: Sep 2007
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Campfire Tracker
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OP
Campfire Tracker
Joined: Sep 2007
Posts: 3,277 |
Do you mean the 7IMSHA is driven into the chamber so the extractor won't grab it? Or do you mean it sticks in the chamber? Be careful here. Just tried it again, and it is driven into the chamber, but after opening the bolt it won't eject but will slide out. Tried it with another bolt with the same results. It acts like the extractor isn't climbing over the case head. A 7/08 lacks about 3/8" (I'm a carpenter, not a machinist) from chambering. Leaning toward the Cerrosafe, thanks for the replies, guys!
Eagles may soar, but a weasel never got sucked into a jet turbine!
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