Gunsmithing Question on action differences

[18Echo]

I'm in the starting process of collecting parts for a 338 Norma Mag build and had a question about two different actions, the Stiller TAC-338 and the Defiance Deviant L/A with lapua bolt face.

If I understand things correctly, the stiller is a longer action, has a longer barrel tenon and was designed for a 338 lapua chambering? The Deviant is a standard long action, no extended tenon, and can be ordered with a lapua bolt face? Since the 338NM is designed to be loaded at magazine length in a standard L/A it can fit fine in a magazine fed Deviant?

So, besides price is there a benefit of going with a stiller TAC-338 with a longer tenon than a standard L/A length Deviant? Does the longer length of the Stiller cut down on chassis choices versus the Deviant?

I have a 26" Benchmark 3-groove #10 being delivered today and the action is next.

Thanks for the input, and I did read all 26 pages of the 338NM thread!

 

[Edds]

If the Stiller was designed for a 338 Lapua, it probably has 1.125" diameter tenon threads and they probably recommend a barrel with a minimum chamber end diameter of 1.300".

 

[18Echo]

I guess that might narrow it down for me. My profile is an M24, just like Jimmy Sloan developed the cartridge on, at 1.20 so I guess I should go with the Defiance Deviant at a 1 1/16 versus the stiller at 1 1/8. Jimmy developed his on a Remington L/A which is also a 1 1/16, so I guess I'll be good to go.

ETA just got my barrel from UPS. So the #10 contour I ordered (M24) showed up as a #11 MTU @ 1.25. Does this change anything or is 1.30 still needed/recommended for a stiller 1 1/8 TAC-338?

 

[Edds]

I don't think a 1-1/16" tenon thread and a 1.200 breech diameter barrel is a good choice for a cartridge that size.

 

[LRI]

An equally important question to be asking: Which of the two comes with a .750" OD bolt body. You need/want stiffer lugs on the bolt for this cartridge.

 

[Terry Cross]

They both come with 0.750" diameter bolt bodies.

./

 

[RAVAGE88]

an equally important question to be asking: Which of the two comes with a .750" od bolt body. You need/want stiffer lugs on the bolt for this cartridge.

^^^^this.

Mb