GeoDudeFlorida
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Yeah, okay, never mind. Have at it and good luck.
Range Report 6.5 PRC or maybe just a stupid expensive 6.5 Creedmoor?
- Thread starter 45/30-06OKIE
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OP
OP
45/30-06OKIE
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I just meant why they list at the max Sammi COAL and 56gr of h1000 they are saying it's a compressed load? When I had more powder at a slightly less COAL and didn't have any powder compression signs? I'm just trying to understand how that works. I do agree with you I'm getting awful close to excessive pressures with my powder charge based on their load data. I also found a guy on another forum saying he loads 58.6gr of H1000 at basically Sammi COAL and has zero pressure signs??? Just odd as I'm getting good ejector marks at 57.4. I would think unless he has a super crazy long throat and very hard brass he'd be at least blowing primers let alone hard bolt lift.
JFrank
Member
While using powder from with different lot numbers fps can vary quite a bit, your rifle chamber may have a different throat length as well
Seeing that data, I’m suspecting that the combination of being quite a bit over max, and your oal being quite a bit shorter, you got a very substantial pressure spike. Seems like you might be trying to come up with the 6.5 PRC sig fury 
if I might quote some wise words from my gramps that got me started reloading: “I think you’d better back it off a bit, bud”. (I’m just rereading that and it sounds condescending! And that ain’t at all how I meant it! Was trying to be funny!) Spoken around a toothpick while sucking bits of bacon and coffee from between his teeth.
if I might quote some wise words from my gramps that got me started reloading: “I think you’d better back it off a bit, bud”. (I’m just rereading that and it sounds condescending! And that ain’t at all how I meant it! Was trying to be funny!) Spoken around a toothpick while sucking bits of bacon and coffee from between his teeth.
OP
OP
45/30-06OKIE
Member
No no I got what you and @GeoDudeFlorida are saying, I just overthink stuff all the time so I get random stuff stuck in my head and drive myself crazy wondering about one specific thing... I will pull the 156gr bullets out of that ammo and dump the powder back in their respective canisters. Ill restart with just H1000 and calculate a 100 percent case fill according to Bergers data and see what that lands at grain wise and compare it to their min-max. I do appreciate y'all being so concerned for my safety guys, I really do.Seeing that data, I’m suspecting that the combination of being quite a bit over max, and your oal being quite a bit shorter, you got a very substantial pressure spike. Seems like you might be trying to come up with the 6.5 PRC sig fury
OP
OP
45/30-06OKIE
Member
Pulling Bullets!
Edit, finally done!
Edit, finally done!
Last edited:
OP
OP
45/30-06OKIE
Member
2.9105/2.9110 depending on how hard I squeeze the calipers lol.
OP
OP
45/30-06OKIE
Member
Found out some kind soul has uploaded the Berger 156gr 6.5 bullet profile to the GRT discord so I downloaded it and imported it and look what shows up!
57.4gr of H1000 shows a pressure of 62600psi!!!!!!!
57.4gr of H1000 shows a pressure of 62600psi!!!!!!!
GeoDudeFlorida
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No offense but it really should not take a computer to tell you that.
OP
OP
45/30-06OKIE
Member
Yeah I kinda figured as much but I was just glad to see two different things saying the same thing.
troy fairweather
Member
57-57.5 of h1000 seems to be the sweet spot, I've hit it with 140s and 147s.
GeoDudeFlorida
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Berger says MAX is 56.1gr. Why go over max? If you need more rifle, buy more rifle.
OP
OP
45/30-06OKIE
Member
So 6% of 56.1 is 3.36 so if you round up to 3.4 and then subtract that from 56.1 you get 52.7. So I think I'll just round up again to 53 even which is basically right between min and max of H1000 and load up 20 and see how they do. Will work on it sometime soon, probably not this week idk yet.
troy fairweather
Member
I didn't say go over charge I simply said there's a sweet spot with 140/147 bullets.
OP
OP
45/30-06OKIE
Member
Ok I loaded up a more sane load ladder tonight.
Started at Mid and went to Max in one grain increments.
Started at Mid and went to Max in one grain increments.
AJC1
Member
Well you have or will have spent more than 50 on ocw so we've come full circle. Pick a powder and run with it to know your gun until you meet your need or determine you need a different bullet and need to start over. I've never used h1000 but I hear it's a fine powder... I'd stick with it until your out and can't get more or you determine it will not meet your need.
GeoDudeFlorida
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There’s some important lessons here mostly having to do with orders of operation but also with basic information gathering. Orders of operation matter. Things like determining the use cases before buying the firearm, requesting load data from the bullet manufacturer before purchasing components, and measuring seating depth versus chamber length. Starting a load work up without any significant information leads to wasted time and expense. I would consider this a good learning experience and keep moving.
Oh how I’d love to have my own shop and test lab… I’d have wildcats out the ears! Lol
But Learning from someone else is really a time and money saver! (Thanks manual r&d people)
thump_rrr
Member
I’ll give you my 2 cents.
I have 2 6.5 Creedmoor barrels by IBI.
I would have blown my face off if I listened to the internet or reloading manuals for that matter.
Some guys start at 41gr and go up from there.
Hornady lists a 40.9gr max load of H4350 for the 140 ELD-M at 2650fps.
Both my barrels pushed the 140 ELD-M at 2850 with 40.6gr of H4350.
That was my max load and only once through each rifle.
This is what my load development looks like for my newest rifle shot for the first time Sunday.
The 4 groups were with the load made for my other 6.5 Creedmoor.
Groups were shot at 200M while load development was at 100M
At the bottom you can see that the most accurate loads were nowhere near max loads.
38.5gr gets me 2710fps
I have 2 Savage 110BA’s in .308 that are identical yet they don’t like the same loads.
I have 2 6.5 Creedmoor barrels by IBI.
I would have blown my face off if I listened to the internet or reloading manuals for that matter.
Some guys start at 41gr and go up from there.
Hornady lists a 40.9gr max load of H4350 for the 140 ELD-M at 2650fps.
Both my barrels pushed the 140 ELD-M at 2850 with 40.6gr of H4350.
That was my max load and only once through each rifle.
This is what my load development looks like for my newest rifle shot for the first time Sunday.
The 4 groups were with the load made for my other 6.5 Creedmoor.
Groups were shot at 200M while load development was at 100M
At the bottom you can see that the most accurate loads were nowhere near max loads.
38.5gr gets me 2710fps
I have 2 Savage 110BA’s in .308 that are identical yet they don’t like the same loads.
JFrank
Member
Those increments are too large and there’s no need for more that one or two samples of each while shooting a course ladder to identify pressure and rough nodes.
