Type 99 Range Report

[bob q]

Many Type -99 rifles have enough swell at the base and even the shoulder and the dies are so small to begin with a FL die turned out will still size the case body . A big 7.62x54r die will not touch anything but the neck with 7.7 cases .

Information

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[BJung]

This is how I neck size. I rub Imperial Die Wax on the neck. I raise my case and screw the FL die down until it contacts the case, then lower the die down a little and size a part of the neck. I can see the wax being rubbed off. I repeat the same procedure until the neck is sized almost to the shoulder. Then, I lock the FL die in place.

The diameter of my 7.7 Arisaka fireformed brass is too wide for the current RCBS FL dies I am using. Notice the photo of a resized 30-06 military case before I shortened the neck and a fireformed case. Here, I use a custom Lee 7.7 Arisaka collet die. It works well but I am considering having a custom FL die cut to resize brass to match the chamber.Attachment 115100

[BJung]

Here is some information that outlines my journey so far with my T99 Arisaka ( Nagoya ).

As mentioned in an earlier posted, I started with Speer -150 bullets with 4895. If I didn't come across this attached table in Ken Waters' Petload book, I might have tried IMR 4320 because the .303 Enfield crowd has good luck with it. Using this table and the attached article, I chose Reloader 15 and 19.

http://bulletin.accurateshooter.com/...bers-tell-all/


Attachment 115101

[BJung]

I am not including my ladder test photos. Here is the most promising load I have so far using a Hornady 174gr FMJBT, Norma Brass, WLR, and 45.3gr R15. Notice Ken Waters' 45.2gr N203/ R15 petload.

Attachment 115102

The three hit cluster near the fore-end of the rifle is at 200 yards and the cluster near the trigger guard are groups at 100 yard. I'll try and do better and avoid flyers next time.

I examine my cartridges for concentricity too.

Attachment 115103

[browningautorifle]

A big 7.62x54r die will not touch anything but the neck with 7.7 cases .

Way better idea and easy to find dies.

[BJung]

I like this idea too for just neck sizing. I wonder what runout you would get. And, I wonder if the die will still clear a fireformed Arisaka case. Can someone send me the resized outside diameter of the 7.62x54r case near the neck. I'd like to compare that to my fireformed case.