P17 hits high(no worries) and left (big worry)

[emmagee1917]

The beding of the rifle would have nothing to due with the point of impact not changing with sight adjustment. As has been said , something has to be happening to negate the changes you're making to the blade , such as using the ear as a blade. There is a couple of other things that it could be.
When I first bought my M1A1 Thompson , I took her out with the local class 3 dealer doing the sale. I shot her off the bench in semi at a target 50 yds away . He was watching through a scope. He said that elevation was good , but I was off at 9'Oclock. Gave her a little Kentucky windage and he said " same hole " . Gave more , same results. After several trys , I was aiming almost off the paper , but still getting " same hole ". I finally looked to see if I could see what was wrong , and noticed the shark fin front sight was no longer vertical . It was slipping over . I reached up and was able to give it a few twists and hand it to the dealer. The ring where it pressed on cracked during pressing.
See if your blade tower is verticle . If not , see if it's the sight key ( broken or missing ) or if your bbl has rotated ( not tight , though I think the extractor cut would have limited unnoticed movement ) .
Chris

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[Chuckindenver]

wow....how bout this.
have the barrel indexed correctly.. problem solved.. look at the bottom of the action wear the barrel meets the receiver..youll see a couple lines..on on the barrel and one on the receiver. they should be dead on...
post a pic...id bet they are off a bit.

[jessehh]

Here is the picture you requested.
So it looks a thousand or two off, canting the sight over left by a degree. Wouldn't my corrections be to the right then?

[Chuckindenver]

Here is the picture you requested.
So it looks a thousand or two off, canting the sight over left by a degree. Wouldn't my corrections be to the right then?

look....i was right...sheesh... the barrel needs to be removed, and re indexed correctly.. i do these all the time...wow..KISS.
front sight moved to the left,,,,bullet hits to the right,
rear sight moved left, bullet hits left.
looks like you have a JA barrel as well. do to the light color finish..

[Patrick Chadwick]

I was also surprised!

But that was with the Mauser carbine, which has rather fine protector ears very close to the blade. I agree that on an M1917 the ears are much more bulky. Furthermore, the offset is so large (relative to the foresight blade) that I would expect the shots to be off the target in such a case, not just 4" off center, as reported.

[RC20]

Been there and tried to do that, amazing how much you can miss when you concentrate.

Also keep in mind that 50 yds takes a LOT of adjustment, but at 100 it takes a small amount (though 1/16 is a lot).

I don't buy the 150s being the bullet for the 30-06. If you read the history close enough the 175 is the sweet spot. Yes 150s can be very accurate, but the best chances are the 175s.

Contrary to the reports, what was used in at least Europe in WWII was the 175s. That was the machine gun loading for maximum range and accuracy and it proved to work equally well in the 30-06 rifles (all are 1-10 twist though not sure about machine gun). Upshot was the 150s were used stateside as it worked for training and the shorter ranges did not see the difference.

You can vary that a bit with non boat tail as you have more bearing surface with flat base but the idea is that the 168-180 was really the ideal for the twist (or so I think for the most likely to work well across a wide range).

[browningautorifle]

I know that with carbines and M1 rifles, the barrels just out of index by the littlest amount will do exactly what the OP is suffering. I spend the greatest amount of assembly time on index...I would never expect this rifle to have been out of whack.

[Chuckindenver]

i see it all the time...thats the first thing to check on Military rifles that shoot off to one side or that have the rear sight adjusted all the way right or left..
then.
if its good...check for barrel being bent, or issues with the muzzle ect... KISS easy thing to use.

[Chuckindenver]

the one thing to check after index is fixed. is the front sight...iv seen some were the sight was bent in a attempt to fix the sight picture...some so bad it ruined the sight base.
just fixed a 1903A3 that had this issue..after i repaired his index. i had to replace the front sight..
the gunsmith he had work on it, couldnt get the barrel loose, so he just tried to bend the front sight over to get the sight picture right...

[Chuckindenver]

you guys know im just teasing you....im just as guilty of over thinking an problem....sometime i have to step back, and look at the simple things...