We are regularly doing our Bombardment using Tungsten particle and it work as good as using gold particle.
see the Reference
“Multiple maternal proteins coordinate to restrict the
translation of C. elegans nanos-2 to primordial germ cells
Development 135, 1803-1812 (2008) doi:10.1242/dev.013656”
Dear Steve Von Stetina,
Yes, we are generating integrated lines regularly using tungsten particles and as such there is no modification for the coating of particles with the DNA. But there is a minor modification for the distance between the plate for bombardment and Hepta adapter, we put worm plate at the 2nd place slot from the bottom of the bombardment machine chamber and this modification seems to give us more rescued line.
Best of Luck,