M-1 garand cast bullet load data

[TylerL]

I am using a 150 grain lead cast bullet
I am using IMR 4064 and BL-C(2)
Bullet is a 150 grain .309
Where should I start?

[rintinglen]

My only experience was with a 311-291, oven tempered for max hardness, gas checked, and 40- 42.5 grains of IMR4895 in a Korean import 30 years ago. It was not spectacularly successful. Until I got up to the top end, I did not have good reliability, especially as the gun got dirtier. But accuracy was best at the start load. Most of the advice I got was to go to a heavier bullet. Since nothing I did was going to make that gun into a ten-ring wizard, I sold it and gave up on that endeavor. There are many others on the board whose experience exceeds mine. Hopefully, they'll be chiming in.

[Wheelgun]

Lyman 311299 (206gr) sized .311 with IMR 4895 in the mid-30grs will be the most accurate and safest on the Op rod. Somewhere around 1800fps

[Hick]

I'm not sure you can get there with 4064 and the lead bullet unless you gas check/powder coat and/or use filler. By the time you get the velocity down to a level acceptable for the bullet you will be down below 70% case fill which is not a good idea. I did extensive testing with a 150 grain jacketed bullet and found that I had to go down to about 35 grains of 4064 (and use filler) to get below 2000 fps. The problem with that is 35 grains is about 70% fill and is way below the published starting loads for this case and a 150 grain bullet.

[dale2242]

Mine has 100% function with 32 gr of 4064 or IMR 4895 with cast from 150-200 gr.
That seems to be lighter than most M1s want.
Start low and when you get to 100% function call it good.

[Thumbcocker]

Lyman 311299 (206gr) sized .311 with IMR 4895 in the mid-30grs will be the most accurate and safest on the Op rod. Somewhere around 1800fps

This

[oldhenry]

Lyman 311299 (206gr) sized .311 with IMR 4895 in the mid-30grs will be the most accurate and safest on the Op rod. Somewhere around 1800fps

Everything I was looking for in one sentence.
Thanks