In another thread 405grain posted some ideas on what he termed Hybrid Boolit Powder Coating. See: https://castboolits.gunloads.com/sho...Hybrid-Boolits
In essence powder coating the driving bands only; leaving the nose uncoated. This was an alternative method to completely powder coating the boolits. I tried a few of these and started wondering what the accuracy differential was between fully Powder Coating a rifle boolit – shooting a group and then shooting the same load and boolit with driving bands only coated.
I shot two styles of boolits in a test today; the RCBS 200 Sil and 311290 in my Remington 700 chambered in .308 Winchester. These boolits are on the heavy side for the .308; but I have been shooting a variety of heavy boolits this winter in the .308 Winchester. The following pics show a Completely Powder Coated and a driving bands only powder coat of the RCBS 200 Sil. (Green); And a Completely Powder Coated and a driving bands only powder coated 311290 (Blue).