case filler?

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willyqbc

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working up a reduced load for my little guy, gona probably be 26-30grns of H4895 under a 100grn hornady, calibre is 270 win. Question is what media do you guys use to fill up the case to keep the primer flash from "jumping" the powder? And is this really neccesary? I don't want anything that will gum up the barrel.

Thanks
Chris
 
Get hold of a Lyman book , good gen on that, you can use filler but its tricky, some folks use dacron, pillow stuffing or something like that, I stay away from filler, just use proper powder that works without filler. XMR powders are good, and some IMR..
Frank
 
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I've done a bit of work with reduced loads and with that one I highly doubt you'd need filler. If you're worried just load up some and try it with the powder settled to the front and then back before you pass it to your son.

I've used 15gr of Unique in a 375 H&H with cast and just made sure the powder wasn't at the front of the case. Wasn't accurate but it was fun. Used the same load in the 444.
 
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Filler

My use of fillers started with light loads I wanted to try / test in a .45-70, using 405gr. cast bullets. In the 1st Edition Lyman Handbook of Cast Bullets, there are loads of 22 - 27grs of 4227, using bullet # 457124. To start with, I used a little bit of cotten ball material. A friend suggested trying something that I thought would offer a little more in the way of uniformity. Its a caulking & sealant product called Stopdrafts, by Tago. I picked it up @ Home Depot. Cut to the required size to fill the gap between powder & bullet, it seems to work very well. I like it better than cotten ball material.:)
 
I use cut up napkins from Wendy's for my 45/70 loads. Ordinary toilet paper can be used as well. They burn clean into carbon which get blown out of the barrel.

Other material like dacron or cotton, they leave behind some gummy substance, which I think is not too good for the barrel. You can always try the material by burning it.

Danny
 
Who knows... Maybe some day soon you can cut up and use your Firearm Registration Certificates:)
 
The typical "reduced charge powders" are the Hodgdon H4895 , IMR4759 and AA XMP5744

Hodgdons rule of thumb is take any cartridge that lists H4895 as a choice and apply 60% to get the minimum reduced charge . Hodgdon does not claim to need fillers. I have done this lots but the 60% rule still yields relatively high velocities but great results

IMR4759 - limited experience. Good source of reduced load data for this powder is in the Hornady load book and to a lesser degree Speer load book

AA XMP-5744 - This powder is considered the cats meow for reduced loads. Lots of the black powder cartridge shooters use this as a smokeless powder of choice. Picture a 45-70 case with only 20 grains of this powder !

The reason XMP-5744 is the cats ass for reduced / subsonic applications is it was desgined from ground up as a reduced velocity cast bullet powder where it is insensitive to powder positon in the case

I played around with my 458Win Mag ( lots of empty room with this powder ) holding the gun up first to settle the powder to the base and also muzzle down to settle the powder to the front. On average there was no difference in velocity

Only thing with XMP-5744 is there is sometimes unburned powder

Contrary to popular belief reduced loads with these powders is NOT dangerous. The bullet / powder manufactures are ultra careful to cover their ass. The would not publish unsafe load data

Where guys get in trouble are the ones playing around with very fast pistol / shotgun powders like Red Dot in reduced loads with data from unreliable sources

270win reduced load data in the Speer book is a reliable source , as is calling Accurate Arms. Their ballistic gurus will talke your ear off


Only word of caution is lots of the super reduced load data from AA ( 1200 fps etc ) are for cast bullets. If you use this data for jacketed you can stick a bullet in the bore due to lack of pressure

Here is a link to 5744 http://www.accuratearms.com/data/5744.htm

As you can see this powder was designed for use WITHOUT fillers and insensitive to postion. For the guys who are stuffing Dacron etc there are better alternatives nowadays
 
The concerns surrounding reduced loads only apply to double based powder (ball powders, for the most part). Single-based powders, which do not contain nitroglycerin are not prone to detonation.
 
prosper said:
The concerns surrounding reduced loads only apply to double based powder (ball powders, for the most part). Single-based powders, which do not contain nitroglycerin are not prone to detonation.
Click to expand...
Don't try that with slow burners like 4831, etc. They have been known to detonate in reduced loads.
 
Johnn Peterson said:
My use of fillers started with light loads I wanted to try / test in a .45-70, using 405gr. cast bullets. In the 1st Edition Lyman Handbook of Cast Bullets, there are loads of 22 - 27grs of 4227, using bullet # 457124. To start with, I used a little bit of cotten ball material. A friend suggested trying something that I thought would offer a little more in the way of uniformity. Its a caulking & sealant product called Stopdrafts, by Tago. I picked it up @ Home Depot. Cut to the required size to fill the gap between powder & bullet, it seems to work very well. I like it better than cotten ball material.:)
Click to expand...

The guy that brought the product to my attention was out on a '.45-70' shoot today with 303carbine & yours truly. Using the product in the loads he was shooting was a reminder of it's contribution to accuracy & consistecy.
I'm a convert for that as a filler medium.;)
 
Johnn Peterson...our 45/70 shoot today

Re: Browning 78 45/70

.......todays 3 shot group useing 500 gr Lee gascheck
with 2 wraps of Teflon Tape as lube and over 0.90 inch of Caulk Rod filler (closed cell Foam ) over 24.0 grains of A2400 powder measured.......0.490 inch for 3 shots....the 4th shot opened the group to....1.00 inch....

Velocity is 1350 fps measured when the rifle still belonged to my brother and he was shooting my loads several years ago...

I dont' use these fillers in bottleneck cases ever....just .444 and 45/70!

hs45/70.........your mileage may vary
 
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