I have 1000 SS109 62grain AP bullets I am going to put into a batch of new LC 08 brass...

Id like to use BL-C2, WIN 748, or VARGET since since thats what i am currently swimming in...

Anyone know how much powder to use?

I am tempted to split the difference with some hornady data I have on 60grain and 63grain bullets...Bad idea?


Any help would be great.  Thanks

A good rule of thumb when confronted with load data for a bullet weight that's lighter and load data for a bullet weight that's heavier than the bullet you have is to go with the data for the heavier bullet.  In your case go with the 63 grain load data, start 10% below max, and make test loads incrementally to max or just under max and you'll do OK.  If you see over pressure signs on before  you shoot the max or under max test loads, STOP, now you've found the real max for you and pull the remaining test loads





 

THIS is a good site has loading data for powders mentioned  i  use the min and haven't  had any cycling problems with my 2  built AR's

http://data.hodgdon.com/cartridge_load.asp

There is one for SS109 and two for 62 grain Barnes.

Not really plenty.

24 grains H 322 with ss109 is 3000 fps from 16 inch .

This subject comes up fairly often.

Here is a Link to another thread with info.

Follow the links in my post for even more.

Looking at the online Hodgdon data for 63 and 69 bullets I would start with 24.0 grains of Varget and work up from there. When in doubt I usually start with the next highest bullet weight.

The one test I did with M855 62fmj using 1/7 Colt 20".
RP and WCC cases
RP 7 1/2 primer
Hodgdon H335 powder
overall length tested 2.250-2.255" (varies with tip shape)
––24 grains of H335––-2902 fps avg.
––max. 24.6––––3035 fps avg.
 Tested in summer temps. I would advise starting with 23 and working up from there.
Military specs says 3025fps, 78 feet from the muzzle, so my one test using H335 shows that 24.6 may be very close to maximum with that powder and components in my rifle. Only other tests used different lots of surplus pull-down and so called virgin WC844 powder which is close to H335 in burn rate.
START LOW and WORK UP!

SS109 is a bullet construction specification and it isn't AP.

Second, NONE of those propellents are what is used for M855 Ball.  Just because someone claimed H335 is the civillian equivalent of WC844, it isn't an accepted lot of WC844, otherwise St. Marks/Primex, the current supplier of WC844 to Lake City Army Ammunition Plant would have sold it as such under contracrt.  Instead, it is a lot that was probably rejected for one reason or another.  Using the specified charge in TM 43-0001-27 would not be a smart thing.

Likewise, pulling what appears to be real LC M855 might lead you to believe they are using another powder or a different charge weight.  Don't do it.  Even if your buddy snuck some out of Fort Leavenworth after his last summer FTX with the National Guard, the ammo produced under TM 43-0001-27 has to conform to pressure AND velocity standards.  Unless you have the same equipment to measure PRESSURE, keep within the PUBLISHED data.

Sorry to sound like an ass but 55,000 PSI letting loose inside the receiver of an AR15 is a BAD THING.  It WILL split bolts, DESTROY magazines, BALLOON RECEIVERS and VAPORIZE brass.  Ask me how I know.  Because I had a near starting load of AA 2520 let loose in a Federal American Eagle brass case,  The right side of the ejection port was GOLD from the vaporized brass.  Had I been a southpaw, it might have been permanenly scarring.  I escaped without injury.  My rifle wasn't as lucky.  Upper, bolt, magazine and charging handle were toast.