Marlin Firearms Forum banner
1 - 16 of 16 Posts

·
Registered
Joined
·
249 Posts
Discussion Starter · #1 ·
Has anybody had any problems with the unburnt? leftover residue that 5744 leaves in their barrels?

A shooter I know that has shot a lot of cast bullet loads says that he had read that the unburnt kernels of 5744 left in a barrel can cause accuracy problems. He had used it for 38-55 and .45-70, but now says that he has sworn off of it. He further says that he himself thinks that he has suffered accuracy loss in two of his rifles because of it. I like the stuff myself, as it is just about the most accurate powder I have used for "reduced" cast bullet loads in duplicating black powder velocities in my single shot and lever guns. I have probably burned up 5 or 6 lbs. of the stuff and I don't "think" I am seeing any reduction in accuracy. It is annoying to keep it out of the actions. But, I think that is my only complaint about it. Any thoughts or experiences ??

Smoke Ratchet
 

·
Registered
Joined
·
249 Posts
Discussion Starter · #3 ·
The target tells the truth. Don't sweat the unburned kernels. If you're getting the accuracy you need,and your rifle likes the load,all is good.

Rob
Rob, Thanks for the reply. Have not had a problem so far. Hope I don't, the stuff is an accurate powder for cast bullets.

Smoke Ratchet
 

·
Registered
Joined
·
1,222 Posts
I had the same experience. I don't know if increasing the powder charge would help with unburned powder or not. I changed to unique and have been happy.
 

·
Registered
Joined
·
249 Posts
Discussion Starter · #5 ·
I had the same experience. I don't know if increasing the powder charge would help with unburned powder or not. I changed to unique and have been happy.
rbyham,

Thanks for the reply. Yeah, I've used a pile of unique over the years and it's good stuff too. It can be somewhat position sensitive though with light charge weights where as the 5744 is not. 5744 is versatile stuff for duplicating cast bullet black powder velocity loads. I've used it in .30-30, .38-55, .40-65, .45-70, .45-90 and it worked real well.

Smoke Ratchet
 

·
Premium Member
Joined
·
1,084 Posts
Works really good for me in my reduced loads for 450 marlin and 45-70. I haven't noticed any unburned powder or accuracy loss.
 

·
Registered
Joined
·
249 Posts
Discussion Starter · #7 ·
Works really good for me in my reduced loads for 450 marlin and 45-70. I haven't noticed any unburned powder or accuracy loss.
Scott,

Just wondering, you say that you are not noticing any kernels of unburnt powder in your barrels. I guess I'm wondering if perhaps you are using a heavier charge than I am, or maybe you are using magnum primers? I've never tried magnum primers with 5744.

Smoke Ratchet
 

·
Registered
Joined
·
910 Posts
with my single shots i get to look through the barrel after every shot, sewer pipe comes to mind as thats exactly what it looks like. accuracy is still good, the only thing is once in a while one of those kernels will find its way into the chamber area and leave dents in the case, that does not bother me and when the sr4759 runs out 5744 is where i will go
 

·
Registered
Joined
·
249 Posts
Discussion Starter · #11 ·
Green Lizard,

Yep, Thats where I first noticed it, in my single shots. Started looking down the bore of my lever guns and it's the same. Next time I load some .45-70's with the stuff, I'm gonna try magnum primers just to see if it makes a difference.

Smoke Ratchet
 

·
Registered
Joined
·
676 Posts
I have shot 50 or more pounds of it in my 45-70, it works very well for me. I am not completely convinced those grains are unburnt.Part of the reason for that is the loads are just too accurate to have differences in the amount of powder burnt. I recently put a scope on my Sharps and fired two one hole groups off a bench at a 100 yards. Results like that are much too consistent to have variations in the powder ignition. I have a question for you are you using a heavy crimp? Accurate says in their data for this powder that it requires a heavy crimp.
 

·
Registered
Joined
·
249 Posts
Discussion Starter · #14 ·
I have shot 50 or more pounds of it in my 45-70, it works very well for me. I am not completely convinced those grains are unburnt.Part of the reason for that is the loads are just too accurate to have differences in the amount of powder burnt. I recently put a scope on my Sharps and fired two one hole groups off a bench at a 100 yards. Results like that are much too consistent to have variations in the powder ignition. I have a question for you are you using a heavy crimp? Accurate says in their data for this powder that it requires a heavy crimp.
dag,

Thanks for the reply. Yes, on the crimp. I use the Lee Factory Crimp Die. Maybe I need to crimp them tighter! I know what you mean about maybe those grains are not unburnt. I have thought about that also. Maybe, they are just left over pieces of cellulose tubing after all the powder burns? You would think that if you were going to see any problems, you would have after burning as much of it as you have out of one particular rifle! Thanks again for sharing your experience with 5744. I think I am gonna stop having any concern about it. It certainly is accurate in my cast bullet rifle loads.

Smoke Ratchet
 

·
Registered
Joined
·
66 Posts
I have never noticed any more unburnt powder when loading AA5744 and most other powders and accuracy is very good in my 45-70 ammo. Now that IMR4759 will be discontinued AA5744 will be the powder I use for reduced rifle loads and the 45-70. I really like IMR4759 and it's a bit more dirty than AA57440.
 

·
Registered
Joined
·
1,537 Posts
I get a few unburned kernals, but it still shoots well. According to the folks at Accurate, increased pressure will reduce the amount of unburned kernals, but the unburned powder has no affect on accuracy. 5744 is my go-to for 405 gr cast loads. If it's working well for you I'd say run it and don't worry about anything unburned.
GH1:)
 
1 - 16 of 16 Posts
Top