GONZOS: excellent info.. thank you.For what its worth I have shot a little over 500 of the 184's thru a new barrel and my reamer with a .220 freebore. I am not into the donut and I am no closer to the donut than with the 180 hybrids. I think this works because the ogive is different and has a longer taper on the 184.
My 184's mic a little smaller in dia. than the 180's also. .2839 in the middle of the bearing surface and .284 at the pressure ring on the 184 VS .2841 in the middle of the bearing surface and .2842 at the pressure ring on the 180. My load and chrono data has been very close to one another with both bullets. YMMV
How is your accuracy with your 0.220 Freebore ... compared to the 180’s?? And what velocity are you running on the 184’s?