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.243 help

As mentioned above, a smaller aiming point would be one of the first things I'd change, depending on the scope/magnification/target distance. Often referred to as "aim small, shoot small".
I'd also ask about bench technique, what rests are being used and are you resetting the rifle back in the rest as accurately as possible. Some of that stringing could be from poor front rest positioning and/or rear bag hitting a sling stud or mount.
 
I would seat at coal of 2.620 (Hodgdon data)with that bullet. Ladder test, to find powder charge with smallest vertical dispersion. Than small seating depth testing if best charge weight is larger than REASONABLE for shooter/rifle expectations. I also believe you should be testing on targets with lines, markings that ensure rifle scope is aligned consistently. Vertical or horizontal lines on the target that you use to level/plumb rifle while on bullseye. Powder type change before bullet change, just because I think there are better performing powders available.
 
OK, so I'd just dial your POA within an inch of your POI, change to a copy paper backer with horizontal and vertical reference lines and change to a bullseye of 1" overall and shoot the same loads.
That might seem like you're changing 3 things. Really all you're changing is 1. Your target.

I'll be surprised if that alone doesn't bring you down to 1".
 
My fav for 243 with light bullets used to be H4895 or IMR 4895. I found best accuracy at the top end.

These days I'd have to be trying Reloader 15 or some of the other ball powders.

I don't think you're doing too bad with whatcha got. Do what's being suggested, and you'll likely cut those groups in half. Be careful, 243's are so sweet shooting, you're likely to burn your barrel up. I did. jd
 
I_shoot_for_fun said:
As mentioned above, a smaller aiming point would be one of the first things I'd change, depending on the scope/magnification/target distance. Often referred to as "aim small, shoot small".
I'd also ask about bench technique, what rests are being used and are you resetting the rifle back in the rest as accurately as possible. Some of that stringing could be from poor front rest positioning and/or rear bag hitting a sling stud or mount.
Click to expand...
I am useing sand bags in the front and my shoulder in the back
 
SSL said:
A bit less than max charge of AA2700. Work carefully up from 43.0 grains with a book max of 46.5. Depending on your brass manufacturer, pressure may well start to show at around 44.0 or so. Be careful and go slow.
Click to expand...
Thanks I don’t have any of that powder I will have to check around
 
Sand bags vary greatly in firmness, hard bags can induce vertical. Especially with light weight rifles and softer holds. And of course no barrels on bags or sling attachments recoiling into the bag. Proper support under the butt stock also.
 
I have hunted with a 243 for near fifty years with at least six different rifles. One of my favorites was a 700. The first decent load work up with it was with 4064 IMR and Sierra 85 gr BT Hunting bullet. Powder charge was little warm, But this same combo has worked very well in all of the other rifles. When testing I make sure to shoot 3-shot groups with a good cool down between each. The warmer the barrel the worse.
 
There are plenty of powders to use with that bullet. I've never shot a vmax bullet that would not group tighter than that. That 75 vmax will shoot in that .243 if you will shore up your platform. The triggers are a little rough in those rifles also.
 
208 parvo said:
The first group on the paper plate is 1 in center of left hole to center of right hole
The next group is right at 1 1/8
The third is 11/4
Click to expand...
Like others said a 9 twist is for heavier bullets for deer hunting. It may be a stuggle to find a load for light bullets. Buy some Berger bullets around 100-105 gr if you can find them.
 
My barrel is advertised as having a 1 in 9.25" twist rate. That's what the old cleaning rod test shows also. As shown earlier, it likes the 75-grain VMax bullets just fine. I doubt if the difference of 1/4" between yours and my barrels will count for much. It also shoots the Nosler 80-grain BT/SP Varmint quite well.
20171005_153359.jpg
 
Great quote: "If you don't have anything intelligent to say, you just might want to consider a career in politics."
 
If you can find them, Try the Sierra 95 gr HPBT match kings.
And try some H-4350
Also go on the site and print your own grid line targets, There FREE!
 
Since we can’t see your scope and mount, here’s another you could check. Make sure there is enough vertical clearance between your objective end of the scope and your barrel. When you cut it too close the scope can bump into the barrel during recoil, which can disturb the reticle.

Also, if you want to check how much is due to the shooter, ask a mentor to shoot a few groups using your bench setup and your ammo.
 
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