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DoubleD
.400 member


Reged: 23/11/03
Posts: 2437
Loc: Retired in Oklahoma
Re: Blown barrel
      03/04/05 12:33 AM

Here's food for thought on RL15.

I was working on some reduced loads for a 577/450 Martini Sporter rifle. (*** See Administrators note below ***) Shooting 500 gr. bullets with 75 grs. of RL15 at 2000 fps at an estimated 35,000 CUP in a 6 1/2 pound Martini felt neither fun nor safe. I was getting hang fires and misfires at 45 to 50 grs. No bullets stuck but lots of clumps of unburned powder and neck blow by at the lower end load range. After shooting a shot we would see these clumps of powder laying on the ground down range smoldering and then suddenly flare up. I solved this problem with an over powder wad of kapok. I am leery of any wad especially in a bottle neck case. When it warms up I am going to try puffalon for over powder wad.

Could it be that the large charges are partially igniting and the powder column is being blown down the barrel and then igniting? Or perhaps continuous ignition as it goes down the barrel.

I don't know if my experience with RL15 contributes any ideas to cause of this double blow up, but I would hate keep it to my self and it was important


Edited by NitroX to add the following from a post later in this thread. I want to remove any ambiguity in the above post for safety reasons.

In reply to:

Poster: DoubleD
Subject: Re: Blown barrel

NitroX,

Just to set your mind at ease how about if I phrase it like this"


In reply to:
--------------------------------------------------------------------------------

I was working on some reduced loads for a 577/450 Martini Sporter rifle because shooting 500 gr. bullets with 75 grs. of RL15 at 2000 fps at an estimated 35,000 CUP in a 6 1/2 pound Martini felt neither fun nor safe.


--------------------------------------------------------------------------------



The loads I was working with were in the 45 to 50 grs. 1500 fps range.

I also got the hang fire misfire problem with XMP 5744 until I used filler. The 5744 did not give me unburned clumps like the RL15 did.








--------------------
DD, Ret.

Edited by NitroX (03/04/05 01:07 PM)

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Entire topic
Subject Posted by Posted on
* My Holland .500/.465 blew a barrel CFA 31/03/05 03:45 PM
. * * Re: My Holland .500/.465 blew a barrel 500grains   04/04/05 11:04 AM
. * * Re: My Holland .500/.465 blew a barrel CFA   04/04/05 12:20 PM
. * * Re: My Holland .500/.465 blew a barrel 500grains   04/04/05 12:36 PM
. * * A warranty won't save your life... tinker   05/04/05 05:08 AM
. * * Re: A warranty won't save your life... CFA   05/04/05 02:57 PM
. * * Re: A warranty won't save your life... tinker   05/04/05 04:54 PM
. * * Just got back from the lab... tinker   06/04/05 06:34 AM
. * * Re: Just got back from the lab... CFA   06/04/05 07:31 AM
. * * Re: Just got back from the lab... tinker   06/04/05 09:10 AM
. * * Re: Just got back from the lab... unspellable   07/04/05 09:19 AM
. * * Re: Just got back from the lab... NitroXAdministrator   06/04/05 02:09 PM
. * * Re: Just got back from the lab... tinker   06/04/05 05:35 PM
. * * Re: Just got back from the lab... k80   06/04/05 10:21 AM
. * * Re: My Holland .500/.465 blew a barrel tinker   01/04/05 03:44 PM
. * * Re: My Holland .500/.465 blew a barrel unspellable   03/04/05 03:03 AM
. * * Re: My Holland .500/.465 blew a barrel bonanza   02/04/05 12:20 AM
. * * Re: My Holland .500/.465 blew a barrel CFA   01/04/05 05:24 PM
. * * The remains of an old gun... tinker   01/04/05 06:10 PM
. * * Re: The remains of an old gun... 4seventy   01/04/05 10:06 PM
. * * Re: The remains of an old gun... CptCurlAdministrator   01/04/05 09:53 PM
. * * Re: The remains of an old gun... tinker   02/04/05 03:08 AM
. * * Re: The remains of an old gun... 4seventy   02/04/05 09:06 AM
. * * not case hardening... tinker   02/04/05 09:17 AM
. * * Re: not case hardening... 4seventy   02/04/05 10:26 AM
. * * paper thin barrels and the sweetness of fu*kall... tinker   02/04/05 11:10 AM
. * * Re: paper thin barrels and the sweetness of fu*kall... 4seventy   02/04/05 01:41 PM
. * * Re: paper thin barrels and the sweetness of fu*kall... tinker   02/04/05 02:20 PM
. * * Re: paper thin barrels and the sweetness of fu*kall... 4seventy   02/04/05 02:37 PM
. * * Bees' knees and blown barrels... tinker   02/04/05 02:43 PM
. * * Re: not case hardening... NE450No2   02/04/05 11:06 AM
. * * Blown barrel 4seventy   02/04/05 04:02 PM
. * * Re: Blown barrel DoubleD   03/04/05 12:33 AM
. * * Re: Blown barrel NitroXAdministrator   03/04/05 03:07 AM
. * * Re: Blown barrel DoubleD   03/04/05 10:14 AM
. * * Re: Blown barrel NitroXAdministrator   03/04/05 11:52 AM
. * * Re: Blown barrel NE450No2   03/04/05 03:46 AM
. * * Re: Blown barrel 475Guy   03/04/05 06:34 AM
. * * Re: Blown barrel tinker   03/04/05 07:07 AM
. * * Re: Blown barrel CFA   03/04/05 02:43 PM
. * * Re: Blown barrel unspellable   03/04/05 09:31 AM
. * * Re: Blown barrel NE450No2   03/04/05 12:02 PM
. * * Wm. Evans unspellable   04/04/05 04:26 AM
. * * Re: Wm. Evans NE450No2   04/04/05 05:37 AM
. * * Re: Blown barrel mickey   03/04/05 12:50 PM
. * * Re: not case hardening... new_guy   02/04/05 09:42 AM
. * * Re: My Holland .500/.465 blew a barrel SteveH   01/04/05 02:08 PM
. * * Re: My Holland .500/.465 blew a barrel bwanabloke   01/04/05 03:06 PM
. * * Re: My Holland .500/.465 blew a barrel ArnoldB   01/04/05 12:03 PM
. * * Re: My Holland .500/.465 blew a barrel NE450No2   01/04/05 12:20 PM
. * * Re: My Holland .500/.465 blew a barrel mickey   31/03/05 04:42 PM
. * * Re: My Holland .500/.465 blew a barrel NE450No2   31/03/05 06:23 PM
. * * Re: My Holland .500/.465 blew a barrel Bwanaclark   06/06/06 06:23 AM
. * * Re: My Holland .500/.465 blew a barrel 400NitroExpress   06/06/06 05:41 PM
. * * Re: My Holland .500/.465 blew a barrel Bwanaclark   07/06/06 05:58 AM
. * * Re: My Holland .500/.465 blew a barrel 400NitroExpress   07/06/06 06:28 AM
. * * Re: My Holland .500/.465 blew a barrel armbar   07/06/06 08:51 PM
. * * Re: My Holland .500/.465 blew a barrel armbar   07/06/06 08:57 PM
. * * Re: My Holland .500/.465 blew a barrel 400NitroExpress   08/06/06 10:12 AM
. * * Re: My Holland .500/.465 blew a barrel armbar   08/06/06 12:11 PM
. * * Re: My Holland .500/.465 blew a barrel bulldog563   17/06/06 01:49 PM
. * * Re: My Holland .500/.465 blew a barrel NE450No2   17/06/06 06:19 PM
. * * Re: My Holland .500/.465 blew a barrel 500grains   07/06/06 11:41 PM
. * * Re: My Holland .500/.465 blew a barrel CFA   06/06/06 02:57 PM
. * * Re: My Holland .500/.465 blew a barrel Bwanaclark   07/06/06 04:20 AM
. * * Re: My Holland .500/.465 blew a barrel NE450No2   06/06/06 04:49 PM
. * * Re: My Holland .500/.465 blew a barrel 400NitroExpress   06/06/06 07:04 PM
. * * Re: My Holland .500/.465 blew a barrel 4seventy   06/06/06 08:21 PM
. * * Re: My Holland .500/.465 blew a barrel 400NitroExpress   07/06/06 12:24 AM
. * * Re: My Holland .500/.465 blew a barrel armbar   06/06/06 08:11 PM
. * * Re: My Holland .500/.465 blew a barrel new_guy   01/04/05 01:16 AM
. * * Re: My Holland .500/.465 blew a barrel mstarling   01/04/05 02:18 AM
. * * Re: My Holland .500/.465 blew a barrel mickey   01/04/05 03:32 AM
. * * Re: My Holland .500/.465 blew a barrel CptCurlAdministrator   31/03/05 09:52 PM
. * * Re: My Holland .500/.465 blew a barrel CFA   01/04/05 04:40 AM
. * * Re: My Holland .500/.465 blew a barrel NE450No2   01/04/05 07:49 AM
. * * The pressure curve... tinker   01/04/05 08:58 AM
. * * Re: The pressure curve... JudgeG   01/04/05 09:32 AM
. * * Re: The pressure curve... CFA   01/04/05 10:27 AM
. * * Re: The pressure curve... mickey   01/04/05 12:31 PM
. * * Re: The pressure curve... Will   02/04/05 10:07 AM
. * * Re: The pressure curve... CFA   02/04/05 12:24 PM
. * * Re: My Holland .500/.465 blew a barrel CptCurlAdministrator   01/04/05 08:56 AM
. * * Re: My Holland .500/.465 blew a barrel NE450No2   01/04/05 09:49 AM
. * * Re: My Holland .500/.465 blew a barrel bonanza   01/04/05 07:57 AM
. * * Re: My Holland .500/.465 blew a barrel NE450No2   01/04/05 08:03 AM
. * * Re: My Holland .500/.465 blew a barrel Chasseur   01/04/05 01:05 AM
. * * Re: My Holland .500/.465 blew a barrel Rusty   31/03/05 07:53 PM
. * * Re: My Holland .500/.465 blew a barrel NitroXAdministrator   31/03/05 08:54 PM

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