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Max Online: 16728 @ 03/25/12 08:51 AM
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#7176188 - 05/21/18 07:45 PM 7.7 mm Ammo
General Guts Online   content
THF Trophy Hunter

Registered: 08/05/12
Posts: 8557
Loc: Dallas
I inherited this gun, Mitsubishi WWII rifle and am trying to find a place that sells 7.7 rounds and confirm the gun has NOT been modified.
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#7176278 - 05/21/18 09:19 PM Re: 7.7 mm Ammo [Re: General Guts]
ChadTRG42 Online   happy
THF Celebrity

Registered: 09/16/09
Posts: 12836
Loc: Lewisville, TX
If it's a 7.7 Jap, it's an easy round to load for. Norma and Prvi make brass, and it shoots a .311" or .312" bullet. I can load you most any .311"/.312" bullet, if you like. Let me know if I can help. Thanks!
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#7176300 - 05/21/18 09:38 PM Re: 7.7 mm Ammo [Re: General Guts]
ChadTRG42 Online   happy
THF Celebrity

Registered: 09/16/09
Posts: 12836
Loc: Lewisville, TX
Since your the second person in the last week or so looking for this round, I went ahead and added it to my website. Hope this helps!

https://dallasreloads.com/product-category/rifle-ammo/7-7x58-jap/
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Custom and Precision Ammunition!!
www.DallasReloads.com
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#7176938 - 05/22/18 03:46 PM Re: 7.7 mm Ammo [Re: General Guts]
wp75169 Online   content
Extreme Tracker

Registered: 10/11/09
Posts: 4334
Loc: Wills Point
I have a good set of bore mics to measure the bore. That doesnít help with the chamber but itís a start if your interested I will ship em to you or meet you somewhere if youíre on the east side of the metro mess.

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#7178237 - 05/23/18 09:22 PM Re: 7.7 mm Ammo [Re: General Guts]
diablodog Offline
Outdoorsman

Registered: 04/23/15
Posts: 54
Mitsubishi did not make WWII rifles . If you post a photo of the markings on the left hand side of the receiver I can tell you who did make it . The groove dia can be as large as .315 , so you need the right bullet to make it work well . Also the chambers are over sized . That combined with the groove will cause misfires with ammo made by someone who does not fully understand how to make it work . Just ask Hornady , they loaded it wrong and their ammo suffered from a lot of problems .

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#7179220 - 05/24/18 08:37 PM Re: 7.7 mm Ammo [Re: General Guts]
General Guts Online   content
THF Trophy Hunter

Registered: 08/05/12
Posts: 8557
Loc: Dallas



It does not appear to me to have been bored.
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#7179319 - 05/24/18 10:11 PM Re: 7.7 mm Ammo [Re: General Guts]
diablodog Offline
Outdoorsman

Registered: 04/23/15
Posts: 54
Would still need to see the marking if you would like to know who made it .

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#7179453 - 05/25/18 06:35 AM Re: 7.7 mm Ammo [Re: diablodog]
General Guts Online   content
THF Trophy Hunter

Registered: 08/05/12
Posts: 8557
Loc: Dallas
Where is it located?
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#7179545 - 05/25/18 07:48 AM Re: 7.7 mm Ammo [Re: General Guts]
diablodog Offline
Outdoorsman

Registered: 04/23/15
Posts: 54
On the left hand side of the receiver . In line with the serial number .

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#7181940 - 05/28/18 01:14 PM Re: 7.7 mm Ammo [Re: General Guts]
nuprofessor Offline
Extreme Tracker

Registered: 07/13/05
Posts: 3865
Loc: CENTRAL MISSOURI
I have a 7.7mm that my FIL 'brought back' from Japan. Gave it to me a short time before he past. Ammo can be somewhat pricy when found. Some ammo I use made by using 'fire formed' 30-06 cases and .303 Brit load data. Fires just fine in the rifle.

General Guts- can you get pictures of the markings? Mine has markings on top of the receiver in front of the chamber.
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#7181946 - 05/28/18 01:20 PM Re: 7.7 mm Ammo [Re: General Guts]
diablodog Offline
Outdoorsman

Registered: 04/23/15
Posts: 54
The markings on the TOP of the receiver will NOT tell you who made it . All they say is " Type 99 " . .303 Brit load data is way to light for the 7.7x57mm .

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#7187495 - 06/03/18 02:54 PM Re: 7.7 mm Ammo [Re: General Guts]
General Guts Online   content
THF Trophy Hunter

Registered: 08/05/12
Posts: 8557
Loc: Dallas

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#7187683 - 06/03/18 07:05 PM Re: 7.7 mm Ammo [Re: General Guts]
diablodog Offline
Outdoorsman

Registered: 04/23/15
Posts: 54
The photo is not very clear . If the four circles making the stacked cannon balls is the only mark there , your rifle was made by the Kokura Arsenal .

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#7187733 - 06/03/18 07:52 PM Re: 7.7 mm Ammo [Re: diablodog]
General Guts Online   content
THF Trophy Hunter

Registered: 08/05/12
Posts: 8557
Loc: Dallas
Originally Posted By: diablodog
The photo is not very clear . If the four circles making the stacked cannon balls is the only mark there , your rifle was made by the Kokura Arsenal .


I'll try again for a better pic. I only have my phone camera.

Thanks
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