Rem .783 6.5 CM which load to work around?

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45C

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Hello
I had my cheap rem 783 6.5 CM ,with Short barrel out today with some new bullets.

I was previously getting a flyer in every 5 rnd group, so I scooped out the barrel channel and it appeared to work.. yippee.. lol

Anyway, I got a couple of nice groups at the first two ( low) starting loads.
Then it opened up quite a bit , until my max load.
As you can see in the pic, if not for the flyer ,with max load it would have been not bad.
At max there were no signs of pressure.

So , based on pics , should I stick with one of the first two groups , to work around?
Or should I experiment around the max load?
Any positive feedback is welcome:)

All groups were 5 rnds at 100 yardsView attachment 359019View attachment 359020View attachment 359021
 
Do you shoot with a chronograph? I would go with the lower powder charges if you're punching paper but I know my 783 loves the 129 Interlocks with a fairly high charge of Varget.
 
Your 36.8 looks awesome not sure I'd do more than that.

My loads:

42.0 gr H4350, Fed 210 primer, 143gr ELDX. 2770fps

42gr RL17 w/ a 127 LRX (I'd try any 130gr bullet in this load bracket), Fed 210 primer. 2925fps

All Hornady brass full length sized, trimmed. (I think my barrel is fast btw!)
 
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Retest at 200 to 300yds, it will be very obvious which load is best - I would work up 36.6, 36.7, 36.8, 36.9gr

Do consider bedding the action/stock... at least around the recoil lug.

Looks like you have a shooter.

Jerry
 
What is your reloading/load testing procedure?

For group size, tweak your seating depths. You should be doing a seating depth test from various depths off of the lands (or even a bit into the lands if that is your mojo), and pick the bullet seating depth that produces the best groups.

For velocity, you should be looking for what's called a "node", where your velocity is stable. Generally, I will shoot a ladder of charges to get an idea of what velocity is produced from each charge weight, and where pressure starts. From there, I'll load up test charges in groups of 5, safely below any signs of pressure, and look for the group that produces the smallest SD/ES.

There's various methods to do load development. Above is a quick run through of my method. We need to know more about your load development procedure to make any sort of intelligent comment for you.
 
That 36.8 group is what I call stringing, what you want is a more tightly grouped in a circle , try bedding recoil lug area as Jerry says :)
 
View attachment 369848View attachment 369850View attachment 369843So, the 36.8 group is what I would call stringing as well.
Here’s a pic of the 35.6 which looks better, to me anyway.

Also two 5 rnd groups of 40 g Varget.
I’m I occasionally getting a flyer and I’m guessing it’s because I have to feed the first rnd by hand as I only have a 4 rnd mag.

It has the Original plastic stock, which I scooped out the barrel channel.
I think my next step will be an MDT stock and a new mag.
See if I can eliminate that flyer.

This is just a cheap project fun gun , but I think it can do better.

Right now I only have access to 100 yards, but that’ll change when the snow goes away.
 
IMG_2008.jpg

The further you go, the easier it is to see if the load is in tune or not.... yes, there was a slight right to left pick up in wind for the test load on the right.

difference in charge weights was not much... and yes, the 36.8gr is showing alot of vertical... but close to the charge is where that barrel will want to shoot,

Jerry
 

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45C said:
View attachment 369848View attachment 369850View attachment 369843So, the 36.8 group is what I would call stringing as well.
Here’s a pic of the 35.6 which looks better, to me anyway.

Also two 5 rnd groups of 40 g Varget.
I’m I occasionally getting a flyer and I’m guessing it’s because I have to feed the first rnd by hand as I only have a 4 rnd mag.

It has the Original plastic stock, which I scooped out the barrel channel.
I think my next step will be an MDT stock and a new mag.
See if I can eliminate that flyer.

This is just a cheap project fun gun , but I think it can do better.

Right now I only have access to 100 yards, but that’ll change when the snow goes away.
Click to expand...

Track the impact of every shot... and count every shot. The rifle is telling you it doesn't like that 40gr load. I suspect around 36+gr is where it will want to shoot with Varget.

If can find some, give H4350 a test ... maybe it will be better... maybe not.

In modern rifles, price doesn't always indicates performance. I suspect you will find a consistent LR load that hovers in the 5's and 6's at 200 to 300yds.... sub MOA at 1000yds. Yes, with bedding and proper load tuning, this rifle might just put 5rds into a group 1 1/2" at 300yds on a calm day.

Nothing "cheap" about that level of performance.

Jerry
 
H4350 works great in 6.5 creedmoor. My go-to load is 42.5 grains in Lapua brass, with 140 Berger Hybrids. Shoots about ~1/3 MOA with an SD of ~4-5. 130's -140 grain projectiles seem to be the sweet spot in 6.5 creedmoor.

Have you tested your bullet seating depths, and how they shoot at each depth? I generally test in increments of 5 thou from the lands. You can really dial in group size with bullet seating depth.

Have you done any velocity testing through a chrono?

You still haven't really explained your reloading process. What do you want to achieve? Precision through a wide range of distances or do you want to dial it in at one set distance?
 
So far I’ve only tested at one COL, Im going try more at the 36.8 +and - a couple of grain increments.
I’m not looking for much , maybe a consistent.5 MOA out to 3,4 hundred yards.

After one last test , I’m going to play with seating depth.

I just wanted to see what a cheap gun/scope combo was capable of, for fun

Also, I think I’ll take a moose with it this fall.
 
View attachment 374227I’ve found the load that I’m going to use..lol
I may just play around with seating depth.
And I’m waiting on a chrony as well. And a better scope!
I think this gun at $450 is an awesome shooter!!
I’ve found this load ,at 2 grains over max recommended load, no pressure signs.
Both are 4 round groups,shot back to back.
 
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