1927 6.5×50 Japanese .
Posted: 05 Feb 2021 01:19
6.5 Japanese Arisaka , type 38 , manufactured Sept-Oct 1927 , .257×.268 net bore groove , .280 throat , 19.5" barrel , 1-9.5 advertised .
The first loads were all 9.9 gr Unique and CCI 200 LRP
277-130 Lee formed and turned 243 brass this ran 8" and was the last fired .
.260-140 NOE in formed 35 Rem , this was second and ran just over a hand width . Lubed in the bottom 2 grooves as cast loaded out touch with 2 grooves out of the case at .272-150 gr 6.5 Hornady checks . I didn't take an OAL but it fits in the magazine , feeds , and lets me get a loaded round out still loaded .
The first load was a 280473 sized .278 at 122 gr with a 270 GC with the bottom band just in the case . This one was all over about a foot high and 18" wide it also had blow back so bad that one case looked like a golf ball . In formed 35 Rem .
This was an introduction to the rifle , I've never shot an Arisaka and it's been longer since I had a long travel 2 stage trigger . It's probably around 7# at the break .
Today has me loading a few in paper patches in Norma brass sized .266 and wrapped to .274 . It's not ideal but I'm working with tools available for now .
Bullets loaded today are the 280473 and 266469DV @ 140 gr over the same 9.9 Unique I'm contemplating continuing on with the 266469 patched with start loads of I4350 and/or H4831 just to see if I can cut some of the frost off . My cheap phone cable bore scope shows a lot haze and a few goobers at this point . I'll break out the 0000 wool brush .
It cleaned up easy I'm actually kind of surprised , but maybe I've had enough practice that I scared it clean . It was much smoother so maybe what I thought was goobers is just pits troweled in .
I went ahead and loaded some 36 gr H4831 from the repacked in 74' WWII surplus powder just about under the PP 266469 . I have 2 of them now 1 drops .266 and the other came with bullets at .268 . Of course I have no clue what that alloy might be ....
No ammo %@*&$ , I got called to work a half shift for an upchucker . So I'll get some in the morning .
The first loads were all 9.9 gr Unique and CCI 200 LRP
277-130 Lee formed and turned 243 brass this ran 8" and was the last fired .
.260-140 NOE in formed 35 Rem , this was second and ran just over a hand width . Lubed in the bottom 2 grooves as cast loaded out touch with 2 grooves out of the case at .272-150 gr 6.5 Hornady checks . I didn't take an OAL but it fits in the magazine , feeds , and lets me get a loaded round out still loaded .
The first load was a 280473 sized .278 at 122 gr with a 270 GC with the bottom band just in the case . This one was all over about a foot high and 18" wide it also had blow back so bad that one case looked like a golf ball . In formed 35 Rem .
This was an introduction to the rifle , I've never shot an Arisaka and it's been longer since I had a long travel 2 stage trigger . It's probably around 7# at the break .
Today has me loading a few in paper patches in Norma brass sized .266 and wrapped to .274 . It's not ideal but I'm working with tools available for now .
Bullets loaded today are the 280473 and 266469DV @ 140 gr over the same 9.9 Unique I'm contemplating continuing on with the 266469 patched with start loads of I4350 and/or H4831 just to see if I can cut some of the frost off . My cheap phone cable bore scope shows a lot haze and a few goobers at this point . I'll break out the 0000 wool brush .
It cleaned up easy I'm actually kind of surprised , but maybe I've had enough practice that I scared it clean . It was much smoother so maybe what I thought was goobers is just pits troweled in .
I went ahead and loaded some 36 gr H4831 from the repacked in 74' WWII surplus powder just about under the PP 266469 . I have 2 of them now 1 drops .266 and the other came with bullets at .268 . Of course I have no clue what that alloy might be ....
No ammo %@*&$ , I got called to work a half shift for an upchucker . So I'll get some in the morning .