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264 Win Mag Loads
ozona12
Member Posts: 5 ✭✭
Who has the "correct" load data for 264 loads?
I'm using IMR 7828 SSC with 139 grain Sierra Game Kings and Lapua Scenar 139 gr.
If I look at handloads.com I find people are using 65 gr.
Hogdon/IMR web page recommends 58 max for 140gr NosPart, but shows 62.3 for 160gr HDY Rnose??
I am having to seat the bullets down in the case a little, due to my '63 M70 having that tight land thing. (Tight is good, she said)
I loaded 50 rounds of 7828 at 59grs that I am using to sight in a new scope before I found the 65gr data.
What I have loaded before with 55 gr of 4350 shows no high pressure with nice rounded primers, so I am temped to pump it up to 65 gr of 7828.
Any experience out there with Lapua bullets?
I use this gun out in the canyons of west Texas where 300 yd shots are the norm and killed several at 500yds at dusk out across a flat.
Sometime too much research makes us goofy
I'm using IMR 7828 SSC with 139 grain Sierra Game Kings and Lapua Scenar 139 gr.
If I look at handloads.com I find people are using 65 gr.
Hogdon/IMR web page recommends 58 max for 140gr NosPart, but shows 62.3 for 160gr HDY Rnose??
I am having to seat the bullets down in the case a little, due to my '63 M70 having that tight land thing. (Tight is good, she said)
I loaded 50 rounds of 7828 at 59grs that I am using to sight in a new scope before I found the 65gr data.
What I have loaded before with 55 gr of 4350 shows no high pressure with nice rounded primers, so I am temped to pump it up to 65 gr of 7828.
Any experience out there with Lapua bullets?
I use this gun out in the canyons of west Texas where 300 yd shots are the norm and killed several at 500yds at dusk out across a flat.
Sometime too much research makes us goofy
Comments
Who has the "correct" load data for 264 loads?
I'm using IMR 7828 SSC with 139 grain Sierra Game Kings and Lapua Scenar 139 gr.
If I look at handloads.com I find people are using 65 gr.
Hogdon/IMR web page recommends 58 max for 140gr NosPart, but shows 62.3 for 160gr HDY Rnose??
I am having to seat the bullets down in the case a little, due to my '63 M70 having that tight land thing. (Tight is good, she said)
I loaded 50 rounds of 7828 at 59grs that I am using to sight in a new scope before I found the 65gr data.
What I have loaded before with 55 gr of 4350 shows no high pressure with nice rounded primers, so I am temped to pump it up to 65 gr of 7828.
Any experience out there with Lapua bullets?
I use this gun out in the canyons of west Texas where 300 yd shots are the norm and killed several at 500yds at dusk out across a flat.
Sometime too much research makes us goofy
You can continue to work up towards 65 gr. but I would seriously be looking for pressure signs well before that. The biggest thing I think you need is to find out what velocities your are getting. You can either chrono your loads or measure your loads {edit: drop at significantly different ranges} and compare to a ballistic program. As you noted you have tight lands and you don't seem to be getting high pressure signs at 59 so work up in a .5 gr. ladder (2 each charge weight) until you see pressure signs.
Personally, from working with that case I think your best bet is going to be H1000. However, IMR7828 is pretty close to that, but a smidge faster (according to two of my reload books) One has it at 62 gr. max and another has it at 61.8 (64.4 for H1000). That's more where I would expect it. Since both show the max for IMR 4831 (next faster powder) as being 59 gr. All that info for a 140 gr. spitzer.
Anyways, measure your velocity using one of the two methods and see where that comes up. If you need more velocity then you can do the ladders as suggested.
-good luck
It is kind of screwy on Hodgdon's website that they show a max of 58 for 140 gr. and 62.5 for 160 gr. I don't care if it is a RN, it's a typo.
I am pretty much doing what you suggested.
I started looking for a chrono yesterday...
I was hoping to find a good reliable, consistent source of data to use, but it is not out there. The example of going up in bullet weight and up in charge means the bullets are so different that they should not be used in the same chart, and they don't have much data, or the typing is sloppy. Either way the chart is useless.
My intention is not to get the very fastest velocity, although a 264 is supposed to be very fast, but a fast enough using high BC bullets to get out there like it should, 400yds. I've loaded my ammo for this gun for a long time, due to not finding any, and always hit what I aimed it at.
But since I got this new press and started loading 44 mag to put in my Marlin cowboy with peep sights, (trying to give the local critters a better chance) I have done too much reading of loading data. I was able to change the effective range before significant bullet drop (velocity) of that 44 long gun from 150 yds to 240 yds by going to lighter 200 gr hp bullets and more but slower powder.
What I discovered the last few days is that there ain't much consistent data for the 264.
I went from 4350 to 7828 to get just a little slower, and because of other recommendations and comparing data charts. And because it was on the shelf.....
My guess is that somewhere around 62 grs 7828 for a 140gr sharp boat tail will be plenty, if not the 59 I have gotten to so far.
I'll post some findings if you are interested.
...Aaaahhh, that's it I tell myself, remember to go back to the load that was working. Quit trying for 6 months to make a new powder work.
Oh, and one thing to remember. Don't just rely on powder speeds. Double based powders create more pressure than single based powders. Ball powder won't compare in weights to kernel powder. But, double based kernel powders compare closely in weight to single base powders but produce a LOT more pressure. This is important if you are trying to interpolate loads. Also, VV uses cotton as the cellulose structure base for their powder. Hodgdon, IMR and I think AA use wood. Reloader of course is double base kernel. All fun things to work on when you have some spare time.
I've shot and loaded for the 264 Win for years, and am still learning. I load 60.5grs H4831SC with 140gr Nosler Acubond bullets over CCI 200 primers, or Win LRP. I've loaded everything from 85gr on up, and found the best accurcy with 140gr and H4831 powder, better than H1000, but thats just my model 70. You want to make sure you only change one thing at a time, don't change loads and scopes at the same time. One variable at a time. You also need a 26" barrel to get the goody out of a 264, I've been around alot of them, and if they don't have the long tube, they don't shoot. This is one of the reasons the caliber didn't catch on, that and the fact that back in 58 when it came out there wasn't a real selection of 6.5 bullets avalable. Read what Craig Boddington says about the 264, he's about the only modern writer that even talks about it.
W.D.
I use the following stuff in a old model Remington 700 264 mag with the blued stainless steel barrel and 26 inch length and kill-em as far as i can see-um! Keep a heads up and don't get the barrel hot, I only shoot 3 shot groups due to the heat build-up. I glass bed and float the barrels, except for first two inchs from the recoil lug area!
First I have to use a real good solid type hunting bullet such as nosler's for big game! I've had the ballistic tips and hollow pointed HUNTING bullets just blow up like a gernade on some shots when the bullet contacted heavy bone like shoulder bones, but can use them for varmits! I have to sacrafice just a little bit of average accuracy on paper to use the Noslers vs other type bullets!
I chamber the 120's for long range and the 140's for 300yds and less! both shoot to the same point of impact at 100 yds!
I load for accuracy, instead of just velocity, but I've found that my gun is not critical of the following powders with both 120&140g bullets, H-4831, H-1000, so I just load the middle of the charge weights so as to save on hulls, but the IMR 4350 and H-4350 is critical for accuracy with the 120g's and does not like the 140g with this faster powder!
For a reduced load, lees recoil and muzzle-blast, etc for women and kids with good accuracy I use XMP-5744 and I can select the charge grains and make the gun shoot at 30-06 velocities to same POI at 100 yards as the HV loads and use neck sized hulls that I can reload several times with the reduced load. I use XMP for reduced loads in several of the magnums and hard kicking guns for kids, etc, with very good results, and have girls hunting with 7mm mags, 300 mags, etc, and not telling anyone asking that they are shooting reduced loads!
The boys move on out fast, before the girl starts returning questions and asks them to arm wrestle, when they ask a girl what cal she is shooting and she says 7mm mag or 300 win mag, before she can ask them about their 223, 243, etc!