Bob,
You can get dies for the .28/30 from Buffalo Arms. They have both the RCBS and 4D's. The 4D's are considerably cheaper than the RCBS but personally I'm not gonna recommend them to anyone. I've bought two sets of them and sent the .28/30 ones back to BA and got the RCBS's. The other set was for an 8.15 x 46R and it was barely acceptable. Particulars if you'd like.
I haven't done any crimping. I just set up a "M" die with an expander plug the same diam. as the sized bullet. Mostly tho I have been breech seating. But, I think some experimenting with crimp will be in order this Spring. I know that for the .22 & .25 calibers crimping can help accuracy a lot since the mass of the bullet doesn't seem to be enuf to give the powder a chance to get up to pressure within the case. But, when you go up to .30 cal. it doesn't seem to give any benefit. So, I've been wondering what would happen with the .28. Will be interesting to try it out.
RCBS does make shell holders for this cartridge, and you can use any standard size press you might have. I do my fixed ammo loading on a Bonanza Co-Ax, so your Rockchucker will do fine. I just use the Co-Ax because of the ease in switching dies.
Interesting question about wall thickness. Never measured them so went down to the shop and measured some. Measuring several cases they average about .011". Not having an original case I can't say how this would relate to them, but if a comparable case like the .25/20SS is used for comparison then they would be .0015" thicker.
Annealing is not required. If I recall right they have had the necks annealed. This is something I question as being necessary since the cases are turned from bar, I assume, and aren't subject to the same hardening as drawn cases. Some could consider this a handicap since it would probably not be a good idea to "soup" them up to velocities the cartridge wasn't originally designed for. As long as you stay within original parameters they do just fine.
I agree it's an interesting thread. I really enjoy shooting the caliber. I don't think I'll ever be a threat to the top target shooters so just like the challenge the .28 presents when target shooting at 200 yds. Also, to me the .28 makes a really great Woodchuck/Fox type hunting weapon when used with cast bullets.
The rifle I have mine in is an original Stevens 44 1/2 with a barrel made by Dave Casey...... owner of RMC. He made the cases to fit his chambering job. The gun is topped off with a 10x 1 1/4" Unertl, and I just got done having a SST trigger put into it. It'll be my offhand Schuetzen gun this year. Maybe get a little 'Chuck hunting with it if I can talk GWarden into it.
PETE