I get most of my reloading data online from various manufacturers websites or by calling the manufacturers. I also like to have a "book" for reference. I have used the Hornady 7th for a while and am wondering if there is any reason to upgrade to the 10th?
The 7th has all the calibers and most of the powders I load but sometimes I can't find an appropriate bullet.

Buy the latest edition, but DON'T get rid of the old ones. Then you will have data on the latest calibers and on some old supposedly outdated ones.

Have a blessed day,

Leon

A few new calibers, new powders. The internet is great, but I like a book on my bench, easy access. I have maybe a dozen manuals, never have too much info.

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NRA Cert. Inst. IDPA CSO

If you don't shoot Hornady bullets I don't think their manuals are terribly useful. I find Modern REloading by Lee and the Hodgdon website to be more useful. For Alliant, their 90s manuals have much more data than they currently offer - they basically provide powder loads for every powder they made in every caliber.

The 1987 link on this page is a good though older example:
http://www.castpics.net/LoadData/Fre...cules_1987.pdf

Be careful with the Lee manual; lots of good information, but they don't shoot the data (it comes from other sources) and bullets are often hard to identify if they can be identified at all. Brass and primers are also unknowns. These usually don't make a lot of difference, but they can.

I find that the Hornady (I have the 10th edition), Lee and Lyman manuals provide me with almost all the info I need. I do have several caliber specific books and the Hodgon annual magazine as well.
Firm believer that more info is better!

I have as many manuals and books on reloading I can get my hands on.

Just remember if a specific firearm is listed then a strain gauge is glued to the barrel to get the pressure reading.

And if a universal receiver and pressure test barrel is listed then a direct pressure reading was taken.

The difference being if a strain gauge is used it must be calibrated with a cartridge of a known pressure. Meaning cartridges tested in a universal receiver using a pressure transducer. And pressure test barrels have a minimum diameter bore to generate the highest possible pressure.

This explains why the loading data can vary so much between firearms and test methods.

And no matter what data is used, making workup loads and started at the suggested start loads will teach you a great deal about your firearms and components used.

I'm finding the least available information are for clones to military loads, i.e., 55gr and 62 gr loadings in 5.56x45 and 150 and 175gr loadings in 7.62x51. While they had been listed in earlier editions, I haven't seen a 10th Ed. Hornady to verify they are still in there. Anyone have a copy to verify?
Echo47

There have been a lot of new bullets, powders and cartridges released and developed since Hornady #7. Yes, it's well worth getting.

I'm a bigger a load manual ***** and have the newest manuals from Hornady, Nosler, Lyman and a few others including the most recent Speer #15 manual. If I own one book I own 40 back to 1936 or something.

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Freedom is never free!!
SWCA #3437

THAT, and I'll be D__n'd if I can find out what length of barrel LEE's data comes from regarding the various bullets' FPM and powders... Lee's generalized data is pretty good, but I just cannot trust their load data without a backup form at least one other source. As a relatively "newer/limited" reloader, learning and understanding about Volume Measured Density (VMD) of a powder and applying it in OTHER manuals, has helped me personally. But mining detailed data from Lee escapes me... I do use Lee's Classic Turret equipment though and find it works reasonably well, but I went with RCBS for a #505 scale because I found Lee's scale to be too unworkable/cheap for me.

BACK ON TASK: I have Lyman's 49th Reloading Manual and use it a lot, because of its layout and clear delineation of what specific bullets, powders, primers, and barrel lengths were used in testing. I end up penciling in data from other sources to append my specific needs. I have NOT heard much about what additional data is available in the Hornady 10th Edition Manual for the likes of the popular 38/357 calibers, so I have held off buying it (using my Hornady 9th edition's info instead)... I do like that Lyman's 49th uses/includes Hornady bullets in their data... But is Hornady's 10th Edition worth buying since I have the 9th edition? I can't really say...?

I have that manual, and if offers very little information. I would not buy this manual unless you can pick it up and look though it. It does have some of the newer ELD info, but very small powder selection. The Lee or Nosler manuals offer much more info

To me,the Lyman books rate right up there with the very best.
I've got 3 different ones from Lyman and 6 more from other sources and pretty often,when searching for a new load,all of them are layed out at the appropriate page;from there I simply discard the highest and lowest recommendations and work with what seems to be a low to medium pressure load and work up from there.
I've even seen a load where,in one book the starting load was a little higher than the max in another one.That's the reason why I do not use the highest and lowest recommendation anymore.

Me too!
Now isn't THAT reassuring...

I like books, new and old.
Sierra
Lyman
Hornady
Speer

Skip the LEE book, as they don't test any data, they just collect it from others.

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USPSA/IPSC

I have found my most accurate loads using the Hornady 9th so it is my go to source for working up new loads. BTW, on balance between price and accuracy I have found Hornady bullets to be SUPERB. For example my pet load for my Precision AR-15 features a 68 grain Hornady BTHP and produces sub 3/10 inch 3 shot groups at 100 yards. BTW, this rifle is equipped with a 20 inch Shilen barrel in a Gibbz Arms upper, proving that the AR-15 is capable of stunning accuracy when assembled with premium components. Also have a load worked up for my 1892 Winchester in 357 Magnum that I've managed to shoot to 1 inch at 100 yards using a rear tang peep sight that features a 158 grain Hornady XTP-HP.

10th edition has the loadings for military 5.56; 7.62 x51 and M1 Garrand. I also like Lyman as it gives a better range of cast loads

l don't care too much for the later Hornady books.. They don't have ballistics tables.

You have to go on line for the ballistics charts.

Going on line is nice for reference.. But if it isn't in a manual, written down in black and white, l don't use it.