Point of impact very low with cast bullet 30-06 [Help]

[popper]

The difference between 1700 and 2400 fps. Crank up the speed of the cast. Or use scope reticle to compensate as you indicated.

[1Shirt]

I agree with Larry G! It is my opinion that if you are going to shoot both cast and jacketed, you just have to understand the reality of vols, and accept the fact that you are going to adjust according to which you are shooting. Don't expect to have cast perform the same as cast even if you are shooting the same charge of powder! It just isn't going to happen.
1Shirt!

[darrowj]

Thanks for this thread folks. This confirms what I have been seeing.

I started casting for 30-06 using a LEE C312-185-1R mold and sized to .311. I used IMR 4189 using 27 Grns and 1.5 Grns of Polly Fill. I shot these out of my 1903A3. I saw groups about 20-24" lower than factory jacketed rounds shot through the same rifle at 100 yards. Set my sights to 500 yards (or 5 on the elevation adjustment). After that sight adjustment I got a nice 2 MOA group off the bench at my POA.

[grouch]

I've had cast bullet loads shoot +/- 2' low at 100yds out of 1917 enfields and SMLE's. The same loads out of a Sprinfield shot about 8" low at 100yds. A friend's 1917 with the baael shortened to 22" shot about 7" low at 100yds. Clearly some other things going on than just the drop due to lower velocity.
Grouch