I want to size Remington 45-70 to 40-65. My Redding FL die leaves the neck 0.413" which is way smaller than what I need. Fired brass from my chamber is 0.433 and my Lyman neck sizer goes 0.429 so that combination works for brass already formed. I know I can buy Starline but it is too short. Do all the major brands FL dies go that small or is there one that is closer to my neck sizer? I've thought about honing it out but I doubt I would have a useable die after taking out 0.015". Forster does not offer 40-65 and they won't hone other brands of dies.
lapob

Redding  full legth sizers always  size way undersize, I have 2 sets that I  traded for and I junk drawered the full lenghth size dies. Do yourself a favor and buy a different full lenght sizer die.

They may not want to take on such a small job, but any decent machine shop could open up the neck part of a die. Heck, there's someone in the Assra Journal ad. section that might be approachable for this type of job. I could imagine this being a more cost effective route to get what you want instead of a full custom die or taking a random chance on a different brand. If it were my preference, I'd probably want it to still over size a bit and use a decent expander to arrive at the intended bullet tension. Good luck with it.

I do something pretty similar to what Beltfed describes using RCBS dies.

Chris.

i have a 40/65 trim die,  pm if i can help   art