Load dev inquiry- approaching higher end of hot load
- Thread starter MartyK2500
- Start date
All I'm saying is that you should at least try the large primers. You are obviously frustrated with it and trying to find a way to make what you have work the way you have it, when all you need to do is try testing 10 rounds of large primer brass and see if you like the result. I'm confident that you will.
It's the old definition of insanity to keep doing what you're doing but expect a different result.
For some weird reason guys in forums keep cheering this small primer none sense along despite the obvious short coming that comes with it. I think most shooters are just not diligent enough to see the problem.
Did IBI chamber the barrel? Did you provide the reamer or is it one of yours? What's the specified neck clearance on that reamer? What are you turning your brass to?
Maple 57, yes I have been frustrated in the past but there are some things I have posted since.
I have zero frustrations, never shot an accurate rifle like this in my life.
Was doing another load dev this morning at EOSC and have witnesses to many (more than 1) sub 1/4 moa groups at 200.
I am literally living the classic and often overheard 6.5x47 has got so many nodes I don’t know which to chose from anymore!
Right now the sweet spot is 36.4 gn of H4350
139 Scenar
CCi 450
2625fps (over 1300fps at 900M my local range distance)
20 thou jump
Node is so wide that 36.2 and 36.6 present the same results
Load works so well, still does sub 1/3 on virgin 0F brass!
Kthomas
IBI did the chambering
They provided the reamer and I didn’t have requests at the time
Factory brass is 13 thous thick
Turned to 12 thous
A loaded round is exactly 3 thous smaller than a fired round at the neck
2 thous Bullet tension
I have zero frustrations, never shot an accurate rifle like this in my life.
Was doing another load dev this morning at EOSC and have witnesses to many (more than 1) sub 1/4 moa groups at 200.
I am literally living the classic and often overheard 6.5x47 has got so many nodes I don’t know which to chose from anymore!
Right now the sweet spot is 36.4 gn of H4350
139 Scenar
CCi 450
2625fps (over 1300fps at 900M my local range distance)
20 thou jump
Node is so wide that 36.2 and 36.6 present the same results
Load works so well, still does sub 1/3 on virgin 0F brass!
Kthomas
IBI did the chambering
They provided the reamer and I didn’t have requests at the time
Factory brass is 13 thous thick
Turned to 12 thous
A loaded round is exactly 3 thous smaller than a fired round at the neck
2 thous Bullet tension
No doubt 6.5x47 is a great cartridge. If I was reloading when I got into 6.5mm's, I have no doubt I would've ended up with a 6.5x47L.
What length is your barrel again? 2600 fps is pretty slow, but you also need more H4350 to get to Varget speeds. I believe a lot of people are running around ~40 grounds H4350 in their 6.5x47L, so you have lots of room yet to get there. Check that link out I sent you for more recipes for what's working for other people.
26’’
Yes I have seen it and been through it thanks.
Many guys are running things in the low 2800s with 140 class bullets, I definitely get ejector groove extrusion in my brass by that point.
Right now I will enjoy a very very soft load, not hard on anything, and see when 900M reopens if I need a little more juice, or not.
Ballistic app is well tuned, repeatable results when I bring new loads out there.
Example synced with my Jestrel on Bluetooth and manually input 10mph wind @ 90 degrees
Edit
CGN bugged
First one is good, second one was using wind speed values in my synced kestrel and won’t delete for some reason.
Yes I have seen it and been through it thanks.
Many guys are running things in the low 2800s with 140 class bullets, I definitely get ejector groove extrusion in my brass by that point.
Right now I will enjoy a very very soft load, not hard on anything, and see when 900M reopens if I need a little more juice, or not.
Ballistic app is well tuned, repeatable results when I bring new loads out there.
Example synced with my Jestrel on Bluetooth and manually input 10mph wind @ 90 degrees
Edit
CGN bugged
First one is good, second one was using wind speed values in my synced kestrel and won’t delete for some reason.
Attachments
I’m quite happy I never expected it to turn out this well.
In fact it’s the reason why I’m on a Savage purge on the EE, the bighorn Origin has re-given me hope and excitement when dealing with custom actions.
Just ordered a new Origin + TT diamond from Tom, want to slowly transform my rifle fleet to have everything R700 fottprinted with TT diamond triggers, and everything using a Savage small shank barrel thread.
It will give me the freedom to mix and match stocks and calibers like I feel.
And the Origin is 100% no BS with AICS drop in action.
Tried and tested with mine and friends Manners, MDT, factory rem stocks...
That action has just got the feeding dimensions right with no 3rd bolt lug or oversized bolt body BS
Which equates to, use AICS mags out of the box, no feedlip tuning, no bullet hitting feedramp.
I can borrow anyones AICS mag on the line and im GTG
Okay, I wasn't sure if you tried going faster with H4350. Thought the pressure issues thus far was just with Varget, but I must've missed your post where you went faster with H4350.
2600 fps should certainly get you there with no issues, IMO. Personally I would be frustrated with the slower speeds, there's a lot left ballistically on the table, but at least it's shooting. I still wonder if it has something to do with the chamber and/or barrel. I still think there's something wonky going on with the chamber, the fact that you had a tight neck chamber without specifying that you wanted that makes me wonder if IBI used a worn out reamer, and that's contributing to your pressure issues.
I can get into early 2700s without pressure.
For now, I have at least a 100% winning load I can just have fun with and fireform brass with.
As with all my rifles, I always experiment with different loadings regularly, just because it's fun for me when stranded at shorter distances for the time being.
So we can say I got my load to mass produce ammo with, while bringing out a few faster ones to experiment with from time to time.
I got it wrote down somewhere, around 2740 extractor shines on case head, around 2780 heavy bolt lift.
For now, I have at least a 100% winning load I can just have fun with and fireform brass with.
As with all my rifles, I always experiment with different loadings regularly, just because it's fun for me when stranded at shorter distances for the time being.
So we can say I got my load to mass produce ammo with, while bringing out a few faster ones to experiment with from time to time.
I got it wrote down somewhere, around 2740 extractor shines on case head, around 2780 heavy bolt lift.
At the end of the day, if it's shooting and you are happy, that's all that really matters.
I'm just curious, as you are finding pressure earlier then everyone else I know with a 6.5x47L. Combined with your tight neck issues, I have suspicions that something is going on with the chamber. A tight neck reamer is an odd choice to spec as your standard 6.5x47L reamer (or any cartridge for that matter), so I can't help but wonder if a worn out reamer is contributing to the problems.
Anyways, enjoy the rifle! I'm glad that the 139 scenars are shooting well for you!
I'm just curious, as you are finding pressure earlier then everyone else I know with a 6.5x47L. Combined with your tight neck issues, I have suspicions that something is going on with the chamber. A tight neck reamer is an odd choice to spec as your standard 6.5x47L reamer (or any cartridge for that matter), so I can't help but wonder if a worn out reamer is contributing to the problems.
Anyways, enjoy the rifle! I'm glad that the 139 scenars are shooting well for you!
coleman1495
CGN Ultra frequent flyer
- Location
- Whitecourt
Since I still cannot access my longer ranges due to covid closures,
Decided to hammer the 200M with tests after tests, rather than locking the rifle until 2021.
1st improvement, decided to find a higher node with still some manœuvre before pressure, so I can shoot in the rain.
Found it.
37.4gn of H4350 behind a 139 OTM gave me repeat 1/3 moa accuracy, 5 shot groups at 200.
This new node is netting me 2705fps, which improved my windage and am now super past 1000M.
2nd improvement, decided to do a 180 with my dies, just for the kick of it (because once again boredom and saving all that match money I got to spend it anyways)
Put my redding die and Lee collet aside, to try the Forster FLS with expander ball removed and Sinclair neck expander die.
Redid a mini load dev to confirm experiment.
Turns out it’s even more accurate than ever.
Really funny, as the Lee Collet would produce absolute zero runout ammo, with slight variances in bullet tension.
Don’t know for sure but seating bullets would feel like it.
Now with the new setup, I get constantly 1.5 thou runout, no better no worse, but seating bullets feels the exact same way time after time.
Just ordered a honed forster die now.
Small test with new die...
Don’t know why the brain fart and wrote 34gn, it’s obviously in the 37s.
Decided to hammer the 200M with tests after tests, rather than locking the rifle until 2021.
1st improvement, decided to find a higher node with still some manœuvre before pressure, so I can shoot in the rain.
Found it.
37.4gn of H4350 behind a 139 OTM gave me repeat 1/3 moa accuracy, 5 shot groups at 200.
This new node is netting me 2705fps, which improved my windage and am now super past 1000M.
2nd improvement, decided to do a 180 with my dies, just for the kick of it (because once again boredom and saving all that match money I got to spend it anyways)
Put my redding die and Lee collet aside, to try the Forster FLS with expander ball removed and Sinclair neck expander die.
Redid a mini load dev to confirm experiment.
Turns out it’s even more accurate than ever.
Really funny, as the Lee Collet would produce absolute zero runout ammo, with slight variances in bullet tension.
Don’t know for sure but seating bullets would feel like it.
Now with the new setup, I get constantly 1.5 thou runout, no better no worse, but seating bullets feels the exact same way time after time.
Just ordered a honed forster die now.
Small test with new die...
Don’t know why the brain fart and wrote 34gn, it’s obviously in the 37s.
