Shoots100, I would never try to tell anyone not to build whatever they really want. Having said that (and I know you didn’t ask and I apologize in advance if this is advice you do not want but) If you do decide to build a 14 caliber I
HIGHLY recommend a chambering smaller than the 14-222.
I find with shooting the eight to ten 14 caliber rifles that we utilize here for testing, depredation hunts and target shooting the 14-222 chambering is overbore for the 14 caliber.
I run four (14/221 Walkers and 14/221 Fireballs) here and even they are somewhat overbore for the majority of the shooting and testing we do, To each is his own on what he wants but if you start small you can always re-chamber to the overbore 14's later without the need to cut the chamber off in the future.
I do love my 14 Hornets as well but finding good actions for the rimmed Hornet brass is getting harder and you can't really full throttle them to peak speeds in my opinion. (I have a couple 14 Hornet Extremes cartridges that do really well but you will lose a fair amount of brass fire forming to the 30 degree shoulder on them with the thin Hornet brass.)
I do have a couple new 14 cartridges that I have designed ( 14 TCM Extreme and the 14 TCM Extreme +) that are going through testing now. I personally think they will be better matched to the sweet spot of case capacity for the 14 caliber but only time and testing will say for sure. It definitely would not be the first time the 14 calibers have baffled me or proven me wrong....
I’d love to hear more about the 1 in 9 twist barrel you have. I originally ordered six of them to get the barrel manufacturer to make them for us. Do you mind sharing with me the land groove configuration and blank material of your barrel? Would you happen to be open to doing bullet testing for us on specialty runs of bullets in your rifle when completed? Finding 1 in 9 twist rate 14 caliber barrel shooters is challenging.
I still have several new 14 caliber PTG reamers for sale if any of them fit your interest. (14 Jet Junior finish reamer, 14-218 Bee Finish reamer, 14-221 Fireball finish reamer, 14-221 Fireball re-sizer reamer.
I wish you the very best of luck on your project if you decide to pursue it.
As always stay on target,
Carl C.
Extreme Accuracy
www.14caliber.com