Need COAL for Berger 200 20-X

[ballisticdaddy]

I am planning to switch over to the Berger 200 grain 20 x's and have a barrel being throated. I am loading a dummy round using Lapua brass with Palma primer pocket and have neck turned to .014 and have set the depth to 3.10 COAL based on what I have gathered but wanted to check with some of you that are already utilizing this projectile to make sure this is within the acceptable range?

 

[Ned Ludd]

Using a freebore of 0.180" and the 200.20Xs seated at 0.012" off the lands in Lapua Palma brass, my COAL is 3.114". I length sort bullets for pointing purposes and the avg. bullet length from this Lot is approximately 1.505" - 1.507". A number of people are using a .170" fb throat, which would put their COAL very close to what you listed, with the caveat of Lot-to-Lot bullet length variance. Sounds like you're right where you want to be.

 

[ballisticdaddy]

Using a freebore of 0.180" and the 200.20Xs seated at 0.012" off the lands in Lapua Palma brass, my COAL is 3.114". I length sort bullets for pointing purposes and the avg. bullet length from this Lot is approximately 1.505" - 1.507". A number of people are using a .170" fb throat, which would put their COAL very close to what you listed, with the caveat of Lot-to-Lot bullet length variance. Sounds like you're right where you want to be.

I very much appreciate your reply and hoped the 3.10" COAL would be in the ballpark but always nice to get confirmation!

 

[skiutah02]

Here is a picture I took for my 195TMK writeup (not public yet).

 

[ballisticdaddy]

Here is a picture I took for my 195TMK writeup (not public yet).

View attachment 1010929

Thank you for your data and look forward to reading the (public version) writeup