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I've had some very slight hangfires in my .450 Dakota. Load was 405gr Rem SP over 92.0gr RL-15, Dakota max load (their data) is 105.0gr with 400gr bullet. When do you guys use a filler on the big stuff, what do you use, and where do you get it?

Cheers,
Andy
 
Posts: 3071 | Registered: 29 October 2005Reply With Quote
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What primer are you using. Should be Fed 215M.
Some folks use kapok. The RL powders are
double base, need good primer contact.
All my experimenting shows it's much better to
use RL-19 and fill case. Like 5 times
better. Hangfires are scary business.Ed


MZEE WA SIKU
 
Posts: 27742 | Registered: 03 February 2003Reply With Quote
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if it is under 80% you must use a filler


opinions vary band of bubbas and STC hunting Club

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Posts: 40045 | Location: Conroe, TX | Registered: 01 June 2002Reply With Quote
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My cut off point is 88%, or 7/8
fill. Little more margin, and there is
the next slowest powder to make the
space fill up.Ed.


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Posts: 27742 | Registered: 03 February 2003Reply With Quote
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adrook

Because the 450 No2 case is so big I must use a filler with ALL loads.

So if you do decide to use a filler I recommend either dacron polyester pillow stuffing, or foam plugs cut out with a 50 BMG case.

The filler MUST BE COMPRESSED between the bullet and the powder.

I have fired over 3000 loads with fillers with no problems.


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Posts: 16134 | Location: Texas | Registered: 06 April 2002Reply With Quote
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Thanks everyone.

Primer was Win Mag primer, have had a tough time getting Federal primers for the past year or so. I am going to try the filler.

Cheers,
Andy
 
Posts: 3071 | Registered: 29 October 2005Reply With Quote
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I use a filler ,pink foam board with my 700 nitro. I use 160 grains of Rel 15 and have had 100% ignition with it.
 
Posts: 929 | Location: southern illinois | Registered: 29 July 2006Reply With Quote
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Ed or Jeffe,

How are you measuring the percentage of how full the case is? Do you fill it up with powder to where the end of the bullet would be and then weigh the powder and then calculate what the actual charge is as a fraction of total capacity?

Cheers,
Andy
 
Posts: 3071 | Registered: 29 October 2005Reply With Quote
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Andy- I always measure how much powder
case holds to bottom of bullet.In grains.
Then whatever load is I know the percentage
of fill. Now straight cases are easy to
make fillers for like above with the dense
foam, like bigdoggy uses, or Like I use
wads in 12GA FH or 16 ga wads in my 700HE.
Dacron, tufting and other fillers work
in necked cases. But as I mentioned if you
doing 80-85% fill try next slower powder
and load full. The slower powder will have a lesser and slower peak pressure, brass lasts
longer.Ed.


MZEE WA SIKU
 
Posts: 27742 | Registered: 03 February 2003Reply With Quote
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Under 90% of case volume use a filler. Dacron fiber seems to work very well.Hangfires are extremely dangerous. Seemy post on gun kabooms! The big issue is to avoid any sizable air gap between the powder and the bullet.-Rob


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Posts: 6314 | Location: Las Vegas,NV | Registered: 10 January 2001Reply With Quote
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RL-15 is a position sensitive powder. In large cases it need to be held aginst the primer with either Dacron polyfil for Kynoch type foam plugs.

Once you do this you will find that RL-15 will give you some of the most consistant velocities you have ever seen. It does in my 450/400 3 inch.


Rusty
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Posts: 9797 | Location: Missouri City, Texas | Registered: 21 June 2000Reply With Quote
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Thanks for the help guys!
 
Posts: 3071 | Registered: 29 October 2005Reply With Quote
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