Quote Originally Posted by Calif-Steve View Post
These are .30-06 cases? Or PPU 7.7mm cases. I shot my 7.7mm Type 99 with PPU cases and no trouble to report. It was an very early (1939/40) Hiroshima gun and near mint. Very well made, as well.
Not 30.06 cases. PPU 7.7.

---------- Post added at 10:56 AM ---------- Previous post was at 10:51 AM ----------
Quote Originally Posted by bob q View Post
I did not know there was that much interest in the test shooting of Arisakaicon's . I have load tested my over 250 Type 99 rifles and 80 ish Type 30's and 38's . With the 6.5 rifles I have many that show great accuracy and have won matches with some . I once shot an original Type 97 as a 2nd rifle in a national Benchrest match . I did a five shot group average with 5 targets of 0.875 and a best group of 0.63 . Type -99's are not inaccurate as a rifle , but are hard to get a good group average with the large peep sight . I can cut my groups in half with a small hole clip on aperture for the rear sight . 6.5mm rifle are all over the board on what bullet and load they like depending on bore size and what type barrel they have on them . The 7.7mm's seem to fall into two groups , chrome bores and non-chrome . In most 7.7mm rifles the Hornady .312 150 sp in the best bullet , the .312 174 rn will help with some really large bore rifles . Speer bullets are bad and the Sierra's are just ok . With the chrome rifles it seems the faster you shoot them the better they shoot .

---------- Post added at 02:11 PM ---------- Previous post was at 02:06 PM ----------

Also for the OP . Type -99's have large to extra large chambers and PPU cases are too small , plus dies make the case too small . You can see the soot ring around the case head where it was too small to seal and did not expand enough . Neck sizing fired cases with a 7.62x54r die will help .
I have never neck sized any brass. I only have full length dies. I have heard that you can neck size with a FL die. Is that true, and if so how do you do it?