IMR 4198 in 40-65 Win

[michael m]

The problem. I shoot 40-65 in a c. sharps using 22 gr. IMR 4198 with 1/4 sheet of Charmin and a 300 gr .408 RCBS bullet. The problem is unburned powder left in the case, that just should not be happening. My primers are WLR. Any ideas?

[clum553946]

How tight does the Charmin pack down? If it's loose, grains of powder might be getting in front of your buffer. Have you tried Dacron?

[big bore 99]

I use the IMR4198 in my 45-70's with good results. I don't use a filler. Sometimes a little crimp with the sizing die or a heavier boolit might help.

[michael m]

I had to dissassemble some loads, and the Charmin fell (1/4 sheet) right out, or came out easily.

Maybe I will try dacron of 1/2 sheet, or both, Thank you, Mike

[michael m]

I do not crimp now, but I will give it a try. Thanks, Mike

[clum553946]

Crimping is important, I use IMR 4198 for my 45-70 Trapdoor & I use Dacron, but I use a tuft of it so the powder stays where it's supposed to.