New rifle ?

[gary0529]

Gentlemen, Having a new Whisper made on a Rem XR-100 action with a Lilja barrel and smith asked how long I wanted the chamber. I thought a bit of freebore was desirable but he did not agree.
Before I give him the go ahead to use his discretion, anyone out there with a number or do I just go with JDJ's set up measurments that they use on their 300 Whispers?
Mucho gracias,

I have learned much already here and will add to the knowledge base when able.
Gary