How to develope load?? - XDTalk Forums - Your HS2000/SA-XD Information Source!

wot_racing · 03-16-2008, 12:35 PM

I have been reloading a month or so now, and know the procedure. I follow the published loads, but I have a question now...

How does one work up a load for something with NO information available? I know about reading pressure signs on the case, but where does one START working up a load.. And does the chrono serve any purpose in developing a load other than using the speed to figure the energy the bullet carries?

CatsEye · 03-16-2008, 01:41 PM

While there are some general rules for developing any load, it would be a lot easier knowing some specifics of what you are intending to do. What caliber, powder, etc. A .357 load with Red Dot could be different than a .40 with Power Pistol. I would research on the Net. Usually you can at least find something similar to give you a starting point. Handloads.org has a good database of published and submitted loads.

wot_racing · 03-16-2008, 01:50 PM

Ok, lets make up a cartridge that does not exist and go from there..

Lets take a 45 super case and neck it down to .40...

Hypothetically, I have a barrel custom made and the gun is ready..

Lets immagine I have the dies made.. I have CCI 300 large pistol primers.. I want a high pressure load, so I have Pistol Power on hand..

Where do we start at?

Bearcreek · 03-16-2008, 01:55 PM

Start by saying a prayer.... and then when you go to shoot this new load, say another one...

wot_racing · 03-16-2008, 01:59 PM

Quote:

Originally Posted by Bearcreek

Start by saying a prayer.... and then when you go to shoot this new load, say another one...

Steps:

1. Say prayer....

Next step?

CatsEye · 03-16-2008, 02:13 PM

Well what you are looking to develop is basically a slightly longer version of a .40 Super round. I would start there.

Mercmar · 03-16-2008, 03:55 PM

Quote:

Originally Posted by wot_racing

Ok, lets make up a cartridge that does not exist and go from there..

Lets take a 45 super case and neck it down to .40...

Hypothetically, I have a barrel custom made and the gun is ready..

Lets immagine I have the dies made.. I have CCI 300 large pistol primers.. I want a high pressure load, so I have Pistol Power on hand..

Where do we start at?

You use +p brass, instead of .45 Super, and you use published .400 Cor-Bon data!

You won't have to go to the expense of a custom barrel. .400 Cor-Bon barrels are a dime-a-dozen!

Mercmar · 03-16-2008, 03:56 PM

Quote:

Originally Posted by CatsEye

Well what you are looking to develop is basically a slightly longer version of a .40 Super round. I would start there.

Wrong: The .40 Super's case length is the same as 10mm auto; o.a.l. same as .45ACP.

fredj338 · 03-16-2008, 04:23 PM

I load for several rifle wildcats, no data at all. You would start by measuring case vol. Then finding a cartridge w/ sim. volumn & bullet dia. SO in the your 40x45, I would use starting data from the 10mm, case vol. should be sim. Work up in 0.2gr uncrements. Working up a load w/o a chronograph is really diff. While the chron does not measure pressure, vel. rarely comes w/o higher pressures. The chrono will give you an idea, along w/ fired primer condition & case head measurments, where you are going w/ a part. powder/bullet combo.

ormandj · 03-16-2008, 04:30 PM

Quote:

Originally Posted by Bearcreek

Start by saying a prayer.... and then when you go to shoot this new load, say another one...

I think more useful advice would be to rig a remote firing device. It's not that difficult, and it's a heck of a lot better than having a slide in your eye socket, or a lack of a hand.

03-16-2008, 12:35 PM	#1
wot_racing XDTalk 100 Member Join Date: May 2007 Location: Harlan, KY Posts: 473	How to develope load?? I have been reloading a month or so now, and know the procedure. I follow the published loads, but I have a question now... How does one work up a load for something with NO information available? I know about reading pressure signs on the case, but where does one START working up a load.. And does the chrono serve any purpose in developing a load other than using the speed to figure the energy the bullet carries?

03-16-2008, 01:41 PM	#2
CatsEye XDTalk Newbie Join Date: Jan 2008 Location: Clarksville, Tn Posts: 28	While there are some general rules for developing any load, it would be a lot easier knowing some specifics of what you are intending to do. What caliber, powder, etc. A .357 load with Red Dot could be different than a .40 with Power Pistol. I would research on the Net. Usually you can at least find something similar to give you a starting point. Handloads.org has a good database of published and submitted loads. Last edited by CatsEye; 03-16-2008 at 01:45 PM.

03-16-2008, 01:55 PM	#4
Bearcreek XDTalk 500 Member Join Date: Jan 2008 Location: San Antonio, TX Posts: 801	Start by saying a prayer.... and then when you go to shoot this new load, say another one... __________________ Enter my home with peace in your heart- or leave with lead in your @$$!!--unknown but I like it.

03-16-2008, 04:23 PM	#9
fredj338 XDTalk 1K Member Join Date: Jan 2007 Posts: 1,452	I load for several rifle wildcats, no data at all. You would start by measuring case vol. Then finding a cartridge w/ sim. volumn & bullet dia. SO in the your 40x45, I would use starting data from the 10mm, case vol. should be sim. Work up in 0.2gr uncrements. Working up a load w/o a chronograph is really diff. While the chron does not measure pressure, vel. rarely comes w/o higher pressures. The chrono will give you an idea, along w/ fired primer condition & case head measurments, where you are going w/ a part. powder/bullet combo. __________________ EVERY GOOD SHOOTER SHOULD BE A HANDLOADER!

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03-16-2008, 01:50 PM	#3
wot_racing XDTalk 100 Member Join Date: May 2007 Location: Harlan, KY Posts: 473	Ok, lets make up a cartridge that does not exist and go from there.. Lets take a 45 super case and neck it down to .40... Hypothetically, I have a barrel custom made and the gun is ready.. Lets immagine I have the dies made.. I have CCI 300 large pistol primers.. I want a high pressure load, so I have Pistol Power on hand.. Where do we start at?

03-16-2008, 02:13 PM	#6
CatsEye XDTalk Newbie Join Date: Jan 2008 Location: Clarksville, Tn Posts: 28	Well what you are looking to develop is basically a slightly longer version of a .40 Super round. I would start there.