20 Tactical brass Length?

[Colt Kodiak]

I've been converting LC brass to 20 Tactical and am wondering if the neck is too long. Does anyone know the longest length of the brass?

 

[NCVarhtr]

I'm using Dakota/Lapua brass in my 20 Tac and my reamer print show 1.755 as the maximum chamber length. You probably need to get the reamer print for your chamber and look at the maximum chamber length.

 

[mikeinct]

Those LC's end up short. Let me double check. Appx. 20 thou short on reformed 223 brass.... mike in ct

 

[Colt Kodiak]

Thanks, I'll ask the gunsmith.

 

[jepp2]

Does anyone know the longest length of the brass?

Dennis, per Hornady the max length is 1.760" and the trim to length is 1.750". But of course as mentioned, your chamber can vary. Brownells sells a gage you can use to find the max length for your rifle, but the only ctg I have been able successfully use it on was 20 Bobcat (long enough case neck). By the time I trimmed the neck short enough to use the gage on 223 or 20P, there isn't enough case neck left.
https://www.brownells.com/reloading...s/sinclair-chamber-length-gage-prod32925.aspx

 

[Colt Kodiak]

Okay, thanks.

 

[Sniper338]

Measure your chamber.