R-P brass |
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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Posted: August 16 2015 at 8:35am |
Reloaded exactly 3 times. Neck sized only, annealed. Minimum charge weight of H335 used 150 Gr pill @ 2450 FPS!
Case head separation
I swear this stuff is now a poor as Winchester used to be! It's not the rifle PPU/nny & HXP run perfectly after 6 reloads. |
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Canuck
Special Member Donating Member Joined: January 17 2012 Location: Agassiz BC Status: Offline Points: 3535 |
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Thanks for the heads' up report, Shamu.
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Castles made of sand slip into the sea.....eventually
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MJ11
Senior Member Joined: September 18 2008 Location: Oregon Status: Offline Points: 1882 |
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So familiar. I often have to toss 4~5 out of every ten.
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The Spartans do not ask how many the enemies are but where they are
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SW28fan
Special Member Donating Member Joined: July 02 2007 Location: Texas Status: Offline Points: 2951 |
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I wonder if U.S. brands are now buying S&B brass with their headstamp
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Have a Nice Day
If already having a nice day please disregard |
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paddyofurniture
Senior Member Joined: December 26 2011 Location: NC Status: Offline Points: 5255 |
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Not good.
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Always looking for military manuals, Dodge M37 items,books on Berlin Germany, old atlases ( before 1946) , military maps of Scotland. English and Canadian gun parts.
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Zed
Special Member Donating Member Joined: May 01 2012 Location: France Status: Offline Points: 5585 |
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I've just sorted through and thrown out a lot of Remington cases because they are showing the ring prior to seperation. May have about 4 reload's with being neck sized and annealed twice.
Don't have much choice of ammo here so just have to go with what we've got!
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It's nice to be important, but it's more important to be nice!
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DairyFarmer
Senior Member Joined: July 19 2014 Location: In The South Status: Offline Points: 555 |
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I don't think annealing will effect the head separation as you are annealing the neck. Maybe you are getting the cases too hot and the heat is reaching the end of the case. Try 3 rounds of new cases. Reload by neck sizing only. Fire them off until you see signs of head separation. If you get more reloads before signs of separation then you know where the problem is.
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Zed
Special Member Donating Member Joined: May 01 2012 Location: France Status: Offline Points: 5585 |
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I only anneal the neck area, by spinning the neck of case in a blowtorch flame; using an adaptor socket on a battery operated drill. As soon as the colour change reach's the shoulder, it gets flicked into a bucket of water.
I have recently improved the head space of my No4 rifle so I am hoping it will increase the life span of the brass
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It's nice to be important, but it's more important to be nice!
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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Pretty much the same here. I use an electric screwdriver with a chuck adapter as its more consistent at low speed.
The case is shielded by the deep well socket & I use the temp indicating stick to stop at 450 just behind the neck. (Usually 5~6 secs with a very low flame). The SS bowl is normally full of water, not brass because I drop the cases into it to quench fast before the heat can travel back in any quantity to the harder rear section. I don't think I'm overdoing anything partly because of the shielding & temp indicator, but mainly because the same technique works perfectly with HXP & PPU/nny brass. Sadly its just rubbish brass. |
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Canuck
Special Member Donating Member Joined: January 17 2012 Location: Agassiz BC Status: Offline Points: 3535 |
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Nice set-up, I like it. Think I'll copy your method Shamu if you don't mind?
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Castles made of sand slip into the sea.....eventually
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DairyFarmer
Senior Member Joined: July 19 2014 Location: In The South Status: Offline Points: 555 |
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You don't need to quench brass. It can cool on its own.
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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Canuck:
Parts list: Stand. 3" "Y" junction 31/2" wall flange. (doesn't need to be waterproof so they are actually assembled reversed & glued together.) Wood base from scrap. thin sheet plastic for holder of temp sticks. scrounged food mixer bowl. (Any metal container will do.) holder (for .303 Brit, change sizes as needed for other calibers. Kobalt deep well 14mm socket. 31/2" X 1/4-20 carriage bolt. 1/4 washers. 1/4 fender washers lock washer 1/4 hex nut. 1/4" chuck adapter for hex shaft electric screwdriver from Home Despot. "Templistick" heat indicator crayon. 2 temps 450 for case shoulder, 600 for case mouth. It depends which caliber I'm annealing which one I use where. I only use it at the beginning to set up time/temp, after that I use the same time for every case. Flame as low as you can get it & about 5~7 secs a case depending on flame & brass thickness. Match the carriage bolt to the socket by head size, it stops in the neck portion of the socket to limit case insertion. I do water drop, but not as part of the annealing just so I don't have hot brass everywhere as I do it indoors with cats & dogs watching. |
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Canuck
Special Member Donating Member Joined: January 17 2012 Location: Agassiz BC Status: Offline Points: 3535 |
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Excellent, thank you!
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Castles made of sand slip into the sea.....eventually
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Gun Nut 4
Groupie Joined: December 07 2015 Location: Kingston Status: Offline Points: 65 |
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Your shooting these out of a No.4 Mark I rifle aren't you? Looking at the necks of the cartridge and the amount of blow back on them. I'm only guessing but you may have an excessive head spacing problem. What is the number on your bolt head 0,1,2 or 3. See if you can find another bolt head with the next number higher. The R-P cases are heavier walled that the nny cases they don't stretch as much and therefore fracture. If you are firing these out of a No.1 Mark III or Pattern 1914, then I agree the cases must be the problem.
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Gun Nut 4
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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It passes the NOGO gauge at 0.067" & the problem is only happening with R-P brass.
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Gun Nut 4
Groupie Joined: December 07 2015 Location: Kingston Status: Offline Points: 65 |
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The No. 4 Rifle Bolthead Sizes run as follows:
0 - .620 to .625 1 - .625 to .630 2 - .630 to .635 3 - .635 to .635 So what did you say was the number on your bolthead? See I was dump, and didn't measure for the No Go and just substitute the next bolthead, and the bolt had no problem closing. You might she if you can find someone who has a rifle with the next size up and try it. You might be surprised. I thing on my one rifle I went from 0 up to a 2, so the head space was quite excessive. An increase of .003 of an inch is not much but it may cure your blow back, and prevent the cartridge head fractures. |
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Gun Nut 4
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