Loads not in data

gobrob

gobrob

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Can you make up your own loads if there's no data for your goodies?
Such as, i have Unique and Bullseye powder, and theres' no data for both powders (that I can find!!) in a 124 JHP 9mm. I can find a bullseye load for 124 FMJ, will that do?
Or what about a grain's difference, say you can find a recipe for 125GR JHP and maybe decrease a half grain powder?
Please fill me in, so i don't have to go buy another powder.....
Thanks!!
Rob
 
There is no practical difference between 124 or 125 grains.

What I am more concerned about is how deep the base of the bullet seats into the case compared to the documented load you are using as a guide. If the bullet seats deeper into the case you have less room for the pressure to build. Bullet profile will have an effect on how much of the bullet will need to be in the case.
 
"...Can you make up your own loads if there's no data for your goodies?..." Absolutely not.
"...can find a bullseye load for 124 FMJ, will that do?..." Yep. A jacketed bullet is a jacketed bullet.
"...there's no data for both powders..." Go buy a Lyman manual.
"...what about a grain's difference..." One grain is 1/7000 of a pound. Not enough difference to matter.
 
Well, thanks all, i believe that my questions have been answered!!
I actually didn't mean 'make up my own loads'.... hehehe(KABOOM!!).... i more meant can i find one that is close, and use that... such as 124gr 125gr.... or JHP and FMJ..

Oh, 1 final question, i have a 'bucket' of 9mm lead, round nose bullets in an ice cream tub, they are not marked, i weighed them with a scale, and they seem to average 137 GR. Can't find any loads for 137 GR Lead. They also have a groove with a waxy lubricant built in....
 
Last edited:
Rudy H said:
There is no practical difference between 124 or 125 grains.

What I am more concerned about is how deep the base of the bullet seats into the case compared to the documented load you are using as a guide. If the bullet seats deeper into the case you have less room for the pressure to build. Bullet profile will have an effect on how much of the bullet will need to be in the case.
Click to expand...
Hmm, i totally understand that, the JHP's do seem to be shorter overall than the FMJ's are, so i actually seated them a tiny bit further into the cartridge, with a shorter OAL.....
Damn, this is challenging.....
 
gobrob

JUdging from your questions I would strongly suggest you go out and buy Lyman's Pistol & Revolver Reloading Handbook and any other reloading books you can find. Read the former twice then re-think what you are doing.

There is nothing wrong with working up loads for your pistol or rifle. MOst of us do that all the time. The manuals will give you min.max loads. Finding the right load for your gun and application is where the work comes in. Just go slow and if you are real new at all of this try to find someonein Edmonton who will come out and load with you.

Take Care
Bob
 
If you can't find data for your exact weight of bullet, use data for the next heavier bullet of the same construction. Use the starting load for that bullet and work up.

And follow Canuck44's advice. Particularly that first line.......
 
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