300 Weatherby Magnum full length sizing

[1holeaddict]

I just started loading for a Custom 300 Weatherby built by Hart on a Mark V action. The gun has been short throated to seat bullets close to the lands and still hit mag length. My question is i have a Hornady set to measure shoulder bump. I see no mention of a 300 Weatherby insert. I do see mention of a blank that u can drill out for calibers not listed. Is there an insert available to measure shoulder bump on the 300 Weatherby?

 

[DanConzo]

Don't know about Hornady but Wilson makes one that is adjustable and the insert in the body has the double radiused shoulder cut for the Weatherby. It works like a charm.

 

[rg1]

Hornady chart says use an "E" bushing which is .420"
http://www.hornady.com/store/Lock-N-Load-Headspace-Kit-With-Body-1-Each/

 

[1holeaddict]

Hornady chart says use an "E" bushing which is .420"
http://www.hornady.com/store/Lock-N-Load-Headspace-Kit-With-Body-1-Each/

Wow good looking. In my instructions i see no mention of a 300 Weatherby. I might pick up one of those pretty Wilsons.
Thank u

 

[DanConzo]

1hole--While you are waiting for your Wilson gauge, you can take your straight line seating die body or sleeve of your SL press die (Redding, Forster) and if the top is faced or ground within .001" you can use your calipers or dial indicator stand to check your headspace as long as the case bottoms out on shoulder cut in die body or sleeve. You can check this with a comparison with a new case versus a fired case (if it fits in) or fired and sized case. It most likely will work, I've did this many times.