help with load data


PDA






remmag
April 11, 2013, 08:20 PM
hey everyone ,thanks for reading ,help is appreciated
this will be long so please be patient

i lucked up on 2500 55grain.224 bullets today, i was told they were hornady, they are jacketed soft point
i have 8# of wc844 and as i understand i should use data for H335
here is the delima
lyman calls for
55 grain jacketed soft point - start load 24.3 - max - 27 coal 2.260

hogdon site
55 grain sprsp starting 23. - max 25.3 coal 2.200 (i am not sure what the spr means)

hornady book
55 grain #2266 starting 20.8 - max 23.2coal 2.200

in the hornady book the data is the same as FMJ 55 grain i have worked up a good load for using h335 - again i am not 100% these soft points are hornady

they are .704 long , i would assume if they were hornady they would be .758 long m the same as my fmj bullets ,beacause the load and coal are identical

i did prepare one case ,trimming to 1.750 and seated one bullet to the middle of the cannelure and that ended up with a coal of 2.190 (is there any issues with that

i need advise on the different load data above to work up a safe load

also i am using wolf srp primers

thank you for your expertise

If you enjoyed reading about "help with load data" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!
greyling22
April 11, 2013, 08:37 PM
Any of the starting loads are below the lowest max load. Just pick something a start working up a load. Personally I'd start at 21 and move up in increments of .5grn until I got to 24 or 25 and see what shot well. Then play around in smaller increments in the "shot well" range.

Variation could be due to the age of the book you are referencing, shape of the bullet etc.

Sprsp probably means speer soft point. though I suppose it could be spire soft point.

Don't get too hung up on the brand of the bullet. As long as your are using data for the correct bullet weight and construction (jacketed vs lead) you should be fine.

James2
April 11, 2013, 08:59 PM
Not a bit unusual to get some variation in data from different sources.

I have found it OK to use data for bullets of the same type and weight even if not the exact same bullet. Start low, work up.

I also like to look at more than one source of data. You are on the right track.

If you average the 3 sources start load, you come up with 22.7. I think that is where I would start. As always, it is our responsibility to work up safe loads in our equipment.

PS you didn't say what caliber you are loading. 223?

remmag
April 11, 2013, 09:22 PM
thank you both for the responses
and yes it is 223

i have 20 cases prepped and will start loading them tomorrow and test this week end

Roadkill
April 11, 2013, 09:24 PM
I've been using 24g of WC844 with 55g fmj. Shoot them in three ARs with no problems at all.

rg1
April 11, 2013, 09:41 PM
I've shot several lots of WC 844 surplus powder with 55 fmj and sp Hornady and Win bullets. The lots did vary. I chronographed all the lots and shot loads from 24.5-26.5 grains to get nearly the same velocity, watching for any pressure signs of course. I'd start at 23 grains and work up.

billybob44
April 11, 2013, 10:40 PM
This would be my only concern in an AR platform.
I shoot 55gr. FMJ's over 25.0gr. of WC844, with GREAT results in my two PSA AR's. 95% of these are primed with a Wolf .223 primer.

If your gun will run soft point bullets up the ramp OK, then you're good to go...Bill.;)

osage48
April 12, 2013, 07:46 PM
You probably already have, but make sure and weigh them to insure they are 55 gr.

remmag
April 12, 2013, 08:33 PM
i will make sure they feed ok and i did double check the weight, that is a good point though

thanks to all

gamestalker
April 13, 2013, 05:02 AM
As long as I'm working with data that is based on a bullet of the same weight, I will use that data to get started. Even if I can't find data that is specific to say a boat tail, I use the data for the same weight bullet for a standard flat base bullet. Even two completely different jacketed bullet designs, say a boat tail v.s. a flat base design, are not going to create excessive pressures when using one's starting charge, for the other. About the worst that would happen, is you might start at slightly higher or lower pressure, but certainly nothing that's going to ruin your day or your brass.

The only hard rule here that I apply is, I don't mix and match data for a jacketed bullet, or visa verse, for data intended for a solid copper, lead, or any other bullet that is in a class of it's own.

GS

If you enjoyed reading about "help with load data" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!