Originally Posted by
curiousgeorge
A little update on my search for loads. My 429650 casts 315 grs with old wheelweights and I already had some sized at 430. With 24 grs of 2400 and no filler it shoots about 2" at 50 yds with some of the holes elongated showing the bullets not stabilized either due to length / velocity, from being undersized, or combination. My mold casts large (approx 434) so tried a few unsized, just gaschecked and hand lubed. Group really no better but no "wobbly" holes.
Didn't think I had anything larger than 430, but in going through a box from a machinist's estate sale I found several home made lube dies and one of the sizes at 433. Always amazed at what some of the guys made back in the 50's & 60's. Loaded some and waiting for time to get back to the range. Also loaded some with 46 grs H322 to up the velocity a bit.
Will post results even if lousy.