FWIW, I bought a Neska "T" based custom Hornet that had been part of an estate sale a couple years ago. It has a coned bolt. Because of the coned bolt there is no way for the rim to hold headspace, so that was a problem. It shot new ammo just fine, but the firing pin energy knocked the brass forward about.025, so with reloads brass would have seperated pretty quickly. So I "K'd" it to control headspace on the shoulder but still had headspace issues of about .005-.006 even with firing pin spring at 16#. "Discovered" the 22 Spitfire/ 5.7 Johnson cartridge which has a boltface about .015 bigger than the Hornet rim. Had the boltface opened up a little to accommodate the Spitfire, got reamer and gages from JGS and dies from Graf & Sons, then brass from Reeds Ammo and put it all together with a new 1-12 Brux barrel. I is now my absolute favorite short range varmint rifle. Have tried the Reed's brass which is made from Graf's, Starline, Hornady and Winchester. I re-anneal, then just run through my FL die and it is done, must re-anneal before forming. I also opened up the neck of my Redding FL die from .242 to .250 so as not to work the brass so much and it has worked very well. The only problem I have had is the Winchester brass; about 25% of it cracked in the neck/shoulder area on 1st firing, won't be using any more of that. It looks to me like the Starline is probably the best brass to work with. I'm easily getting 3200-3300 fps with varmint 40 gr bullets and accuracy in the .2-.3 range