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Discussion Starter · #1 ·
I have a 6.5 jap carbine and am having an issue getting it to shoot accurately, it has been quite a while since I worked up any loads for it, last time I put some rounds through I got groups around two inches at 100 yds but had issue with flyers. I worked up my recent load with 120 gr Sierra hollow point boat tails with 38 gr of BLC2 powder, Norma cases, winchester primer, had an issue with flyers again so I seated bullet out father to 2.290 oal, flyers went away, bullets impacted inch and a half high of point of aim, one and three quarter inch groups. I ran out of ammo so I reloaded some more rounds using the same load and components, same oal, this time bullets impacted four inches lower, removed stock and found a high spot where stock was touching the barrel at the end of the fore end, also checked my scope and bases, everything looked good, if this does not solve problem could the scope itself be at fault, it's Bushnell sportsview, bought it about 35 years ago, it was mounted on another firearm before mounting it on the 6.5, any help or advise is appreciated, any way of checking the scope to see if it's the issue.
 

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Discussion Starter · #3 ·
A really quick and easy way to see if the "usual" failure is at play.
Put the gun in something stable(rest) and aim at a target with grids(like 1" X 1"). Then adjust the magnification up and down, back and forth. Watch to see if the POA changes with mag.

Per current Hodgdon data, your load is a full grain over max. If the powder is old and thus a quicker burning rate, that could be a REAL hot overload. FYI

Cheers
I have a bore sighter that has grids, yesterday I checked the scope but kept the scope at 4x and went back and forth, up and down and everything stayed the same, will try it using different magnification with the bore sighter unless you are saying that I have to shoot the rifle while doing this test. Can't remember where I got the loading data but 39 gr was listed as max, I have been watching a lot of vidoes on YouTube regarding the Type 38 Arisaka, even saw a torture test with some real hot loads that failed to blow it up, cases with my load look fine, easy ejection, however thanks for your concern.
 

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Discussion Starter · #7 ·
When I reloaded for 6,5 arisaka I found the japanese rifles tended to favor heavy bullets over 140 grains. I had at that time alot of 6,5mm pulled cacarno cupro nickel FMJ's. And with the issue Iron sights they came to life with those bullets. But on a sidenote those tiny japanese Type 38 carbines I never quite got them to shot nearly as good as the rifles. I always attributed that to the stock set up in full mil; trim.
Being your rifle has been bobbed for hunting use with a scope the first thing I'd check would be the scope as has been suggested , then the bedding . If your flyers occur as rifle warms up I would suspect a bedding issue if scope is ruled out as an issue.
I mounted a different scope on it, nothing has changed, tried H335 powder, groups measured around three inches with 120 gr bullets, about the same with 139 gr Privi partisan bullets. Years ago I used to get better groups with IMR 4320 powder, I use that same powder with my 7.7 jap but am getting low and it has been impossible to find. Checking my records I noticed that those more accurate loads were seated to 2.850 oil, am going to see if going back to that oal will help.
 
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