Well, the jury is in! Every claim I made turned out to be correct.
Here's the bullet in question;
http://www.titanreloading.com/molds/bullet-molds/30-caliber-rifle/lee-dc-mold-c309-170-f-
I cast these out of nearly pure lead with around ½% tin. So that the bullet could deform or conform while being sized. As cast they were .309 and weighed 178.5 bare.
I had to heat the lead very hot, I did not take it's temp, but estimate it was running 850 degrees. I also had to preheat the mold each time to get it to cast decent boolits. Then to top it all off, I had to pressure cast them using a Lyman ladle which allows you to mate the spout with the sprue plate to allow the lead in the ladle to exert pressure on the bullet while it's being formed. After pouring 50 boolits, I got 25 that were well filled out.
I got some writing paper,(tablet), at the GS. They didn't have anything with rag or linen content, so I got it. After soaking the strips in water for a ½ hour, I wrapped 6 boolits, set them out to dry and went to bed.
They were dry this morning so I rolled each one in some Lee Liquid Allox. I wanted to do small steps to reduce the . 319 diameter they ended up at after wrapping. I have the following for 30 cal sizers. A .313 Lyman, a .311 lee, and a .308 Lyman. So in succession I sized them down. I also measured OAL of each boolit befroe and after sizing. AND since this style boolit is also a bore rider, the straight section of the nose was also micked.
Sized dia paper patched----------length B-A----nose dia.---------size after PP rem
1. .308----------------------------.952 to .959--- .304--------------.301
2. .3085---------------------------.952 to .964----.304-------------.301
3. .308----------------------------.952 to .965-----.303------------.301
I could keep on for all six, but the numbers were all very close. The nose section was clearly deformed, the lube grooves were closed, half what they were. This boolit simply would not work if it were loaded. The bore riding nose would have to engrave it's full length upon chambering.
If loaded in a single shot where you could push the loaded round in, it maybe would work. Also, a thin layer of boolit lube should be on the nose, or it would lead the bore if left bare.
There's a high degree of fiddle factor involved with doing paper patched bullets. Too much fiddling around for me to fool with. BUT I'm just curious enough to try it using another, different, bullet style. One without that long bore rider. Since I got the paper, I might give it a try, that's the beauty of being retired!