Copper Creek has modified cases

[grayfox]

Who made your barrel? Inquiring minds want to know.

It's a Faxon, 20"... from Brownells.

Those 105's I have are the Hornadys.   This barrel has lots of head-space room for a normal 2.260 cartridge with them.  

I might get some Rdf's or even look at the Sierra 107's once I get around to them.  But if the 105's will load and shoot ok... well, I already have them on hand.

---

Dino... get some check weights, not a huge cost but gives you a check-calibration to bounce your scales against.
I use a combo that's close to my typical 30-50 gr's weight so I can look at apples to apples.