New Alloy

[Kurt]

We had a January thaw and it surfaced some more bullets and I see some interesting results in this alloy that is not the usual lead/tin/antimony alloy mostly used but I see that I will have to add a little lead to soften it some, especially for the .45 calibers. If they were sast as a GG I would leave it as it is. The left 121 bullets I shot loaded in a .45-70 case and shot with a .45-90 just to see how they react and it shows slight gas cuts and a start of stripping but not bad. The second from the right is a PJ .44 GG creedmoor what is good with this recovered bullet is that the bore riding section on the ogive did not get land cuts and it rode down the bore fully engraving the depth of the grooves, a big plus to reduce smears and holding the nose. All of the GG bullets were shot loaded with no wads under the bullets and this alloy did not deform the base like 1/20 or 1/16 would have been and there is no finning of the bullets PP or GG.
Now for the interesting part. The bullets were all shot using the same alloy mix but look at the .45 and .40 PP. The .45's did not bump up far enough to get full rotation in fact they look unfired almost except for the light land marks and they were shot from the .45-90 and the .40's were shot using the .40-65 and the base got almost the bump up I'm looking for but they filled the grooves at the base enough that they got full rotation with out any sign of stripping.
They could be tempered just slightly more. But for the GG I would not change anything........Kurt