Quickload a .308 recipe please

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MartyK2500

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I am curious about a .308 recipe I have here, to see if quickload confirms a certain pressure or timing,

2 years ago, my best .308 load I found for my 308 Savage/ESS & IBI x 26'' barrel, was 42.7gn of Varget with a CCI BR2 and 175 SMK projectile.
I can guarantee sub 1/2 moa loads for 10 shot groups in that rifle.
In my 26'' I am getting velocities of 2705fps avg.

Now fast forward 2 years later, I got myself an old Savage 10 HS precision with 24'' barrel, barely fired and in pristine shape.
24'' factory barrel, factory stock, not bedded, blind mag, harris bipod, nothing fancy.
A few checkups like headspace and land location confirmed I could use my old 42.7gn ammo to sight in the scope before starting load dev.
I shoot 2 rounds to sight in scope at a target, and then 5 rounds at another target.
To my surprise my 5 rounds we're 0.65moa, without any load dev, and from a setup I wasn't expecting much better than simply sub-moa.
In my 24'' I am getting velocities of 2628fps avg.

So I have a load that shoots extremely well in 2 completely different rifles.
2705fps in the 26'',
and 2628fps in the 24'',

If some one could confirm with quickload what sort of data this gives out i'd be curious to know,
 
No i'm not scared of approaching max I may have not worded my initial post well,
I know that quick load can give you some sort of timing number, I would guess time before it leaves the barrel.
I'd like to compare load in quickload for 2 rifles, see what the data says, and for curiosity sake.

With my low node shooting that well, I am wondering if I am close to Federal GMM w/175 SMK data.
That was not the point when developing that load, but since it get's me to distances I want I see no need to push it faster.
 
For accurate guesstimates from Quickload you need the case capacity of a fired case from your chamber. Then you need a chronograph and then adjust the burn rate in Quickload until the velocities match. then you have the approximate chamber pressure and velocity.

There are so many variations in firearms and reloading components you have to calibrate Quickload with a chronograph to get ball park information.

As a example with .223 cases with case capacities from 28.0 to 30.6 the chamber pressure can vary 6,000 psi with the same powder charge of 25.0 grains of H335. And Quickload defaults to the lowest case capacity until it is adjusted. And after this you need a chronograph to calibrate Quickload for approximate chamber pressure and velocity.

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I’d need your exact case capacity and oal for more accurate results. Using 56gn capacity and 2.8” oal Quickload predicts 2616fps from a 24” barrel with a barrel time of 1.205ms

26” barrel gives me predicted 2657fps with a barrel time of 1.268ms. If I modify the burn rate to give me your 2705fps actual velocity, I get a barrel time of 1.229ms

I had to tweak the burn rate substantially to get to 2705fps. More accurate inputs would generate better results.
 
Biged

I am learning a lot about case capacity and weight lately.
I was surprised to learn that cases sorted in weight will not all have the same case capacity.

Coleman1495,
My brass is lapua I’ll try to get capacity tomorrow.
Do i fill to the neck with spent primer still in?

OAL is at exactly 2.800’’.
By some coincidence, in both the savage and IBI barrel, i touch lands at 2.820’’.

There is something i didn’t mention of my 26’’ IBI barrel, everyone that knows a bit about reloading at the range tell me it’s a fast barrel. I even got someone speculating it’s a 307.5 spec.
Allegedly not many people get to launch a 175 SMK over 2700fps in the 42 something range of varget.

As an example, my 30 cal patches. Go straight down in my 2 Savage 308s, go straight down in my friends remington 308, when i used them without trimming them in my IBI barrel they get nearly stuck. May also have to do with rifling style who knows.
 
MartyK2500 said:
Biged

I am learning a lot about case capacity and weight lately.
I was surprised to learn that cases sorted in weight will not all have the same case capacity.

Coleman1495,
My brass is lapua I’ll try to get capacity tomorrow.
Do i fill to the neck with spent primer still in?

OAL is at exactly 2.800’’.
By some coincidence, in both the savage and IBI barrel, i touch lands at 2.820’’.

There is something i didn’t mention of my 26’’ IBI barrel, everyone that knows a bit about reloading at the range tell me it’s a fast barrel. I even got someone speculating it’s a 307.5 spec.
Allegedly not many people get to launch a 175 SMK over 2700fps in the 42 something range of Varget.

As an example, my 30 cal patches. Go straight down in my 2 Savage 308s, go straight down in my friends Remington 308, when i used them without trimming them in my IBI barrel they get nearly stuck. May also have to do with rifling style who knows.
Click to expand...

2700 and up usually needs 45+ gr of Varget. You have a fast barrel or a fast lot of powder - or both. And you are very close to what I consider max velocity (pressure) for that length of barrel. Stay with that load.
 
Oddly enough, my buddies RMR with a 26” barrel shoots 178gr Eldx at 2770fps using 43gr Varget.

Using the same cartridges his 1982 R700 with a 22” barrel only does 2550fps
 
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