I turned my Panda PPC Benchrest rifle into a 20 Beggs with no turn neck this last spring. No turn neck is 236. I sized down the 220 Russian Case in 2 steps. Used a 233 neck bushing to final resize with to end up with a loaded round 234 neck I tried a 232 bushing but neck tension was too tight with the thicker case necks. I then loaded the cases up with 25.0 grains of Benchmark with Hornady 40 grain V-Maxes to fire form with and it was shooting 1/4 to 1/2 groups with out much effort. I ran out of time to experiment a whole lot before we went on our prairie dog hunting trip last May. I shot the fire form loads at the dogs and it really shot great! Everyone in our group was impressed with the way it shot. Several in the group are building their own 20 Beggs now. Since we came home I fine tuned the loads after fire forming the brass and ended up with 25.6 grains of Benchmark with the 40 grain V-maxes. It is shooting 5 shot groups in the .1 and .2's The gun is a shooter. We been shooting at our range at 400 and 500 yards the last few weekends. We shoot pop and beer cans filled with water for practice. The Beggs hits them with ease..winds have been light at about 10 mph which helps some. If you have been thinking about building a 20 Beggs jump in and do it! I getting ready to build me another one. I was really nervous when I first started the project on how things were going to turn out. Got a little rushed to get it built in time for dog hunting when it took me 3 months to get my reamer after they had told me 6 weeks. If you got any questions give a me a holler.