I've never come across this situation before. I have loaded my double rifle, 10.75X65R Collath with IMR4064 with 35.0 grains of powder up to 42.0 grains with no pressure signs. I have taken great care in the reloading process including reaming out the flash hole in the primer pocket for good ingition. The primer I am using is Federal Large Rifle Match 210M. Bullet is 44-40 sized from .430 to .424 in 200 grain FN. When loaded with powder the cases look about half full. I was wondering if I need some fiber filler to take up the space and if so what kind and how is it measured? And, loading the gun the barrels are pointed downward as you would see someone traditionally loading them. Three times I have had bullets stuck about 3 to 6 inches up the bore from the chamber. After extracting the cases (primers have a normal indention) and tipping the muzzle skyward all of the non-expended powder falls out. I would say probably close to all of what the case originally held. I thought at first bad primers. But, primers alone would'nt have produced enough "bang" I would think to send the bullets that far?? Or if the primers didn't functions properly there would be no ingition whatsoever. A "dud" would be the result. Then if the primer did function correctly why would just a minute portion of the powder or none at all explode? The powder is fairly new and I have used it in 30.06, 7X57, and 8MM with no malfunctions. The primers are somewhat old but again I have had absolutely flawless performance with the other calibers. In addition to the malfunctioning of the 3 bullets I have noticed that there is considerable unspent powder in the barrels after firing what I THINK is a normal round. I have XMP5744 powder on hand and magnum primers. But I am most hesitant to use magnum primers in an older gun. Is the powder burn to fast or too slow when it leaves the unburned power in the barrel? I have heard of putting a bed sheet about 15 feet out in front of you and bang away once. They said I would be surprised at how much burned powder would be on the sheet. And that is with some of the "normal" loads, not the screaming meemie loads for the super flat shooters either. I don't know one way or the other as I have not tried it yet. Anyway, as always, all help is greatly appreciated. I've sent the dies back to Stan Mayle at RCBS for a new resizer die as the milled off the bottom resizer did'nt quite get the job done. Good shooting! Mike

Since it is a rimmed case, try putting a tighter roll crimp on the case.

I think Steve's got it. Increase your neck tension.

Incidentally, if you enlarged your primer holes when you "reamed them out", you made the problem worse, not better. FWIW, Dutch.

For a bullet of such low sectional density in a case like that, you're using an awfully slow burning powder. It's not going to burn completely, heavy crimp or none. Maybe if the case was packed full. A heavier bullet, say 350 grains, would likely work better with a load like that. Why don't you post over on the Cast Bullets forum, or at http://cast_boolits.aimoo.com/ and see what sort of load recommendations you get?

When I mentioned that I was "reaming out" the flash holes I meant primer hole uniformer. Making the hole concentric with the flash hole tool and not enlarging it was what I meant to say. Is the XMP 5744 a faster burning powder than the IMR 4064? I only used the 4064 at first because I thought it was a medium fast burner and would work nicely. However, the 5744 was recommended to me later. Thanks again for the help. Mike

Faster

103 SR-4759

104 H-4227

105 AA-5744

106 SP-3

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150 W-748

151 IMR-4064

152 Brigadier 4065

153 AA-2520

154 N-202

155 RL-15

156 AR-2208

157 N-140

158 R-903

159 S-341

160 TU-5000

161 Varget

Slower

You can be as careful as you want putting your loads together, but it is obvious that you are using a powder which is too-slow burning for the bullet weight and powder quantity you are using. As the folks above have said, you need to increase the wqeight of your bullet; or, use more powder; or, change to a faster-burning powder.

It sounds to me like Re 7 or IMR 4198 might be better suited to light bullets and reduced loads in that cavernous case.

four-tails, this is my very first post on this forum but just yesterday I had a similar occurrance .I found a load in the online IMR load book it was for a .44 mag. with a 240 gr. pill using 27 gr. of IMR 3031 I reduced it by 2 gr. for a start load and it was still a tight fit so I don't know how they got 27 gr. in a .44 case because I had to leave it short of the cannelure and had an overall length of 1.70 where the book calls for 1.61 for a .44 I loaded them singly in my 1894 Marlin, they had no recoil and a very mild report but did produce a very tight group at 100 yds. of about 2 in.I also had scads of unburnt powder thatI actually dumped out of the barrel there was no relistic crimp as they weren't on the cannelure.also they struck the target very low sounds like a similar problem. shootrj2003

Your orund sounds sim. to a .444 marlin. You need to go to a slow pistol powder or a fast rifle powder. A longer bullet owuld help. You're shooting a 200-210gr bullet which is very short. Try sizing down a 240gr. I would also switch to a magnum primer for a bit more heat.

If you want to shoot an IMR powder in the .44 Magnum with 240 grain bullets, I'd suggest 4227. Works nicely, and won't leave that unburned powder mess.

Blue Dot or 2400 is my call, or Unique etc.