The Accurate Reloading Forums
When to Use a Filler?
25 December 2007, 01:38
adrookWhen to Use a Filler?
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
25 December 2007, 02:56
GrandpasezWhat 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
25 December 2007, 03:00
jeffeossoif it is under 80% you must use a filler
25 December 2007, 03:07
GrandpasezMy 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.
MZEE WA SIKU
25 December 2007, 03:34
N E 450 No2adrook
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.
DOUBLE RIFLE SHOOTERS SOCIETY
25 December 2007, 03:37
adrookThanks 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
26 December 2007, 05:06
bigdoggy700I use a filler ,pink foam board with my 700 nitro. I use 160 grains of Rel 15 and have had 100% ignition with it.
26 December 2007, 05:08
adrookEd 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
26 December 2007, 07:45
GrandpasezAndy- 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
26 December 2007, 08:33
RobgunbuilderUnder 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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26 December 2007, 12:12
RustyRL-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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27 December 2007, 03:11
adrookThanks for the help guys!