Which way to Get back in tune?

[gunsandgunsmithing]

This barrel started out a 6-284 that I have shot in 600 yd match and had 3 shots in a inch but never could get all 5 in there , so was probanly out of tune . Then it went to a 6 BR with a long throat .125 that I was never happy with and now with a .075 throat .

Maybe tune but hard to say now. At least from here. Lol! I will say, regarding group shapes though...groups that are diagonally, up and to the right or down and left(same thing), is NOT typically wind induced. If they were going that way, good chance it was tune. If going the opposite, wind is likely the cause. Different bullets and distance come into play but as a rule of thumb, I consider the vertical component of a crosswind to be worth about 1/3rd or a bit less of the horizontal component. But wind will seldom give a flat waterline horizontally by itself. There's almost always a vertical component too, or a combination of wind and tune. A "full value" wind still has vertical. A L-R wind should push the bullet right AND a bit low. Just the opposite for a R to L wind. This is from a rh twist bbl. The important thing to get from this is there's no condition that pulls(yes) the bullet high and right.

A certain amount can be learned by group shapes even in wind, as long as they go where they should go in a given condition. A wind rose can show you roughly where they should go, in different conditions but the gun and shooter have to be on their games too, and flags are crucial.

You probably know this stuff already but it's good info for others...imho.

 

[AlNyhus]

So in a lot of ways, for those of us that load at the range.....it actually causes us to need to load at the range lol. Let's just say it's made me rethink the vial thing!

Tom

Great advice. -Al

 

[NC/Br Shooter]

So yesterday turned out Great. It turned out better than I would had expected. I took four boxes of ammo. 3 for my new Gun. And one for my faithul.
Both guns had been shot earlier in the week. And I had started this thread on account of asking about tune for new gun. The new gun, will get some more done to it. Probably going to see where the top end of node stops. And finish sorting the new bullets.
So what happened great had everything to do with the old gun. I had changed the load in that gun on account of what I was doing to the new gun.
I rebedded the action in this liquid nail epoxy. That's a whole nother story. But, anyway. I resorted the bullets, by length, dropped down a node. Loaded right in the middle of that node. And after length sorting my bullets, every one came out with in a thousandth and half.

Here's the target's for the old faithful gun I all but cleaned the X count. The two top misses where from me not taking enough sighters. But When I started shooting, I didn't think It would had done this good. It out shot my new gun. And It gives me confidence it can shoot ten Xs. I know it can now. Maybe shoot 25 Xs. It just about did
This gun is just a Remington 700 with a
urbanrifleman 12 twist bbl.
@urbanriflemanI guess had I expected this,vI probably would had not done that good. This my best to date, so It's why I'm posting it.

 

[Dimner]

So yesterday turned out Great. It turned out better than I would had expected. I took four boxes of ammo. 3 for my new Gun. And one for my faithul.
Both guns had been shot earlier in the week. And I had started this thread on account of asking about tune for new gun. The new gun, will get some more done to it. Probably going to see where the top end of node stops. And finish sorting the new bullets.
So what happened great had everything to do with the old gun. I had changed the load in that gun on account of what I was doing to the new gun.
I rebedded the action in this liquid nail epoxy. That's a whole nother story. But, anyway. I resorted the bullets, by length, dropped down a node. Loaded right in the middle of that node. And after length sorting my bullets, every one came out with in a thousandth and half.

Here's the target's for the old faithful gun I all but cleaned the X count. The two top misses where from me not taking enough sighters. But When I started shooting, I didn't think It would had done this good. It out shot my new gun. And It gives me confidence it can shoot ten Xs. I know it can now. Maybe shoot 25 Xs. It just about did
This gun is just a Remington 700 with a
urbanrifleman 12 twist bbl.
@urbanriflemanI guess had I expected this,vI probably would had not done that good. This my best to date, so It's why I'm posting it.

Excellent!

Man I love those range sessions where you leave feeling that confidence. Very happy for you