Home Forums Hunting & Shooting Express Rifles and Big Bores Only Question for the .400 Whelen Crowd

See the reamer drawings at about the middle of page one of this thread.

.400 Whelen = .400 Whelen "standard" as per Michael Petrov chamber casting of an original G&H rifle.
That is the A-Team .400 Whelen.
That chamber had changed significantly since the 1923 version by Townsend Whelen.

.400 Whelen-B = .400 Whelen-Berry NOT .400 Brown Whelen.
The .400 Whelen-B is the B-Team .400 Whelen, my design.
It uses same reloading dies but different chamber reamer than the A-Team.
Same shoulder diameter.

Differences:

A-Team chamber length minimum = 2.501", max brass 2.490" trim to 2.480".
B-Team chamber length minimum = 2.509", max brass 2.490" trim to 2.480"
B-Team has 0.008" greater room for brass length stretching on firing or could have 0.008" longer brass max, however you like it.

A-Team parallel-sided free-bore is 0.412" diameter and 0.188" long
B-Team parallel-sided free-bore is 0.412" diameter and 0.300" long

A-Team chamber neck taper is 0.004": Neck-2 (at mouth) = 0.437" and Neck-1 (at shoulder juncture) = 0.441"
B-Team chamber neck taper is 0.001": Neck-2 (at mouth) = 0.437" and Neck-1 (at shoulder juncture) = 0.438"

The B-Team chamber gives a 0.003" STRONGER SHOULDER.
It is silly to give up 0.003" of shoulder to neck-1 difference as in the A-Team chamber reamer.
Undeniable, but of little consequence.
Also of little consequence is the miniscule increase in free-bore length and a specified Maximum COL of 3.600" for the B-Team.

I promise to not mention the .400 Whelen-Berry again.
I am sticking with the A-Team on this thread henceforth.