I think my first reload attempt was a miracle...

With 'flyer'.

Bl4Nymf.jpg


Without 'flyer'

RtkIuKR.jpg
 
Varmit said:
That's a pretty light load of H4831 for a 270. Are you going to take her up some to see what she can do at high velocity?
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That's an interesting question and I need help. I made this load based on an old reloading manual (Lyman 44th edition printed in 1967). Shows this load as "accuracy load" and starting load for this powder at 2695fps). Shows max load as 59gr at 3012fps.

BUT imr reload data online says this is actually the max load.

Wtf
 
Necroman99 said:
That's an interesting question and I need help. I made this load based on an old reloading manual (Lyman 44th edition printed in 1967). Shows this load as "accuracy load" and starting load for this powder at 2695fps). Shows max load as 59gr at 3012fps.

BUT imr reload data online says this is actually the max load.

Wtf
Click to expand...

Ok, it's not H4831, it's IMR 4831 which is a faster powder, and 150 grain bullet so 53g is max. The old manual is probably referring to H4831, and maybe the powder may have changed since then. Use the new data.
 
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HOLY SH.....

So I have no idea what I'm doing. Why the f are there 2 powders so similarly labeled.

I'll go check what powder I have after but I'm pretty sure it's imr.

Fak
 
Necroman99 said:
What software is used to do this and is there a cost?
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This is my hand-rolled target analyzer. It's nearly done, and I'll be releasing it as freeware probably in the next few weeks. I have a few bugs to iron out and a few more features to add, like vertical and horizontal stringing analysis. I'll make a general announcement on the reloading and long range forums when it's released.

For now I just do quick analysis of stuff I find on the Internet to test it out ;)
 
HeavyTread said:
This is my hand-rolled target analyzer. It's nearly done, and I'll be releasing it as freeware probably in the next few weeks. I have a few bugs to iron out and a few more features to add, like vertical and horizontal stringing analysis. I'll make a general announcement on the reloading and long range forums when it's released.

For now I just do quick analysis of stuff I find on the Internet to test it out ;)
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well it looks pretty sweet to me and look forward to taking it for a spin. I think it should be worth a donation of some degree for your efforts if people who know about these things say it is a useful tool....looks cool to me.
 
Varmit said:
Don't worry, you'll get it figured out. keep reading!
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so it is indeed IMR4831. I'm a little "nervewracked" to say the least. I checked my gun...looks ok to me (though wtf do I know about it!). I looked at the spent rounds carefully. By and large the cases look ok. I checked the case diameter with a set of digital calipers and they are not appreciably swollen beyond factory spent rounds (maybe 1 or 2 thou on some...but not all). The primers though do show signs of possible overpressure. I watched a few youtube videos. All of my primers have a little bit of a flattened appearance (loss of rounding around primer perimeter) and a few have a very slight dimple or crater like appearance around where the firing pin struck them, apparently from the primer flowing back around the pin. They also have a little mushrooming when I pulled them.

How much would you guys back off? I loaded them all with 53gr. Online data for IMR4831 says 53 is max and 46.3 is starting load. obviously i feel my loads are shooting well, but hot...don't wanna back off more than necessary.

will post image of primers.

incidentally...I'm still pretty scandalized that two different brands of powder are using the "4831" moniker...just a tragedy waiting to happen.
 
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I checked the case diameter with a set of digital calipers and they are not appreciably swollen beyond factory spent rounds (maybe 1 or 2 thou on some...but not all
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.002" expansion at the case web is excessive, but you need a more precise tool than a digital calipers.
 
Necroman99 said:
so it is indeed IMR4831. I'm a little "nervewracked" to say the least. I checked my gun...looks ok to me (though wtf do I know about it!). I looked at the spent rounds carefully. By and large the cases look ok. I checked the case diameter with a set of digital calipers and they are not appreciably swollen beyond factory spent rounds (maybe 1 or 2 thou on some...but not all). The primers though do show signs of possible overpressure. I watched a few youtube videos. All of my primers have a little bit of a flattened appearance (loss of rounding around primer perimeter) and a few have a very slight dimple or crater like appearance around where the firing pin struck them, apparently from the primer flowing back around the pin. They also have a little mushrooming when I pulled them.

How much would you guys back off? I loaded them all with 53gr. Online data for IMR4831 says 53 is max and 46.3 is starting load. obviously i feel my loads are shooting well, but hot...don't wanna back off more than necessary.

will post image of primers.

incidentally...I'm still pretty scandalized that two different brands of powder are using the "4831" moniker...just a tragedy waiting to happen.
Click to expand...

You'll get used to it. There is no powder called 4831, not today anyway, but there is H4831 and IMR4831. They look different to me, and the jugs are a different colour and made by different companies. Soon you will be able to tell the difference at 20 yds! Get a couple new loading manuals, and don't worry about your rifle. Lots of guys work up loads past the max, but you have to learn about pressure signs of a hot load first. Lots of stuff on this site to educate you. It's just takes some time and experience.
 
bearhunter said:
By the way, be careful with that Lead Sled. They don't allow for take up of recoil forces very well and can cause scope issues and if your stock is wood, maybe even split it.

I use a high density pad between the stock butt and the holding cup. The recoil pads most rifles are equipped with are not enough to absorb the recoil when place against a solid rest. They were made to take into account the ability of a human shoulder to roll with the recoil and bleed off some of the forces.
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I'll second this as no one else has yet. The LeadSled has broken more stocks & ruined more scopes than anything else. I see them in use mostly just before deer season when all the guys bring out their 300WM, 338WM, etc etc and can't handle the recoil so they use the leadsled. Next thing you know, their gun is damaged.

Also, read read read when you are reloading, there is a lot to learn! Good luck!

Cheers
Jay
 
My 7th edition shows 53.8 gr as max for IMR4831 and the Hodgdon site show 53 gr of IMR 4831. Note that the Hodgdon site shows Hodgdon powder, IMR and Winchester powders.
 
Hornady 9th Edition lists for 150gr bullets in the 270, IMR4831 starting load is 48.1 grains, max is 53.8gr. For a beginner, start at the bottom and work up until you get an accurate load or signs of pressure.
 
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