My .338 Thor

FEENIX

Well-Known Member
Joined
Dec 20, 2008
Messages
22,444
Location
Great Falls, MT
Chambering: .338 Thor (.338 NMI, in honor of my 13.5-year-old Karelian Bear Dog, Thor). 😇
Action: Defiance Action Anti-X 20 MOA
Barrel: CarbonSix carbon wrapped 24" 1"8" .860" at the muzzle
Stock: CA MPR chassis/folding



Gunsmith: David Young (Young's Gunsmithing)
Reamer: OP spec/Manson built
Trigger: TriggerTech special
Scope: USO 2.5-20 35MM (for now)
Rings: Hawkins high with angled level
Accessories:
  • Muzzle devices
  • Eric Cortina tuner brake
  • Rex Silentium MG10 Ultra .338 suppressor
  • Thread protector
Misc: Hydraulic forming and reloading dies built by David Young
.338 Thor scoped 1 of 4.jpg

.338 Thor scoped 2 of 4.jpg

.338 Thor scoped 3 of 4.jpg

L-R: .338 NM loaded with 250 Hornady BTHP, after running through the hydraulic forming die, and after running through the sizing die with 250 Hornady BTHP. Hopefully, I get to do some fire-forming off the chamber this weekend.

.338 Thor scoped 4 of 4.jpg

She's not lightweight, but we shall see how she does.
 
Chambering: .338 Thor (.338 NMI, in honor of my 13.5-year-old Karelian Bear Dog, Thor). 😇
Action: Defiance Action Anti-X 20 MOA
Barrel: CarbonSix carbon wrapped 24" 1"8" .860" at the muzzle
Stock: CA MPR chassis/folding



Gunsmith: David Young (Young's Gunsmithing)
Reamer: OP spec/Manson built
Trigger: TriggerTech special
Scope: USO 2.5-20 35MM (for now)
Rings: Hawkins high with angled level
Accessories:
  • Muzzle devices
  • Eric Cortina tuner brake
  • Rex Silentium MG10 Ultra .338 suppressor
  • Thread protector
Misc: Hydraulic forming and reloading dies built by David Young
View attachment 448514
View attachment 448515
View attachment 448516
L-R: .338 NM loaded with 250 Hornady BTHP, after running through the hydraulic forming die, and after running through the sizing die with 250 Hornady BTHP. Hopefully, I get to do some fire-forming off the chamber this weekend.

View attachment 448526
She's not lightweight, but we shall see how she does.

You make me sick! With envy that is! Enjoy it brother!
 
I made it to the range this AM and did my initial fire-forming off the chamber/barrel break-in (18 shots).

.338 NM vs hydraulic forming die vs fireforming.jpg

The one on the right is fire-formed with Hornady 250 BTHP 91.5g Magpro 9 1/2M 3.40" COAL.
.338 Thor barrel break-in group.jpg

These are the last 4 shots during the barrel break-in at 100Y. I think it has potential because I only established a baseline load to fire-form and not expecting any accuracy.
 
Not sure at this time, but I have a few to try. I am starting with powders I already have opened. I loaded some with Magpro, for starters. I will primarily use 250s/300s; I have 250 and 300 Bergers in line for LRH/S.
Sorry to hear about your dog...
A couple of ideas on powders: VV N570 if you can get your hands on any for the 250 or 300 grain bullets (Going off the VV load data for the 338 Lapua) and for 300 grain bullets you may want to also try VV 24N41 with the later being readily available and a single base powder, it could be worth the time to build a load for it? FYI: You can download the VV load data online in PDF format.
 
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