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Misfires & Problemswith 45-70 marlin 1895

4594 Views 6 Replies 6 Participants Last post by  swifty
This afternoon, I shoot about 20 rounds with 5744 30 grains
and had two misfires with federal large rifle primers. I rechambered thede rounds and they fired properly. I did notice some unburned powder in my rifle barrel.
I have using the RCBS priming unit that fits on my Rock Chucker with a primer tube feed.
Now i am beging to question the powder 5744 , partial fill,
priming technique,bullet crimping( used the Lee crimp).
Also, I got some erratic velocities on my Pact chronograph.
The volicities ranged from 1270 feet per second to 680 feet per second.
I have used the same chronograph before with consistant velocities. I shoot several rounds with my 375 H7H mag
whic seemed to be consistant.
I called Accurate powder company on Friday.They assured me that 5744 would perform properly with a partil filled cartridge.
The rounds printed well on a 50 yard target.Its just that I got some misfires, unburned powder, and eratic velocities.
Comments or answers will be appreciated.
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I've used the 5744 without any problems, either with ignition or consistency. It DOES leave a bit of powder residue, but that has never caused any difficulty for me.
I would look for causes other than the powder. Inconsistently seated primers and inconsistent firing pin strike seem like the most likely culprits for misfires. Wide velocity spread can be the result of those, as well as inconsistent crimp.
Hope you get it straightened out!
BTW - I LOVE the smell of 5744 when it's fired. It doesn't smell like any other powder I've used. I know, I'm goofy!

1 - 1 of 7 Posts
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