Load data

winter5470 · January 5, 2009, 01:59 PM

I am new to reloading. I bought and read the ABC's of reloading and purchased the 49 th edition of the lyman handbook. I want to load 9 mm 115 grain CMJ to start. I have shot a few of a friends reloads with 4.2 grains of titegroup (115 grain CMJ) so I thought this would be a good place to start. It seems to be safe in my gun. I open my Lyman book (to check the load data) and it does not even list a 115 FMJ. I know having more manuals would be a good idea but, the only 9 mm 115 grain is a JHP. This seems strange since I see a lot of people shooting 115 grain 9 mm. My question is - is it OK to use JHP data for a FMJ relaod of the same weight (ie, 115 grain)?
Thanks

winter5470 · January 6, 2009, 10:29 AM

OK - I may have found my answer on another thread

Seven wrote: You can typically use the same data for different style bullets, unless the bullets are drastically different in shape. Two of the most obvious examples include full wadcutter bullets and hollow point bullets.

Wadcutter bullets are designed to be loaded flush or close to flush in the case, leaving very little internal space for the powder. Therefore, data for wadcutter rounds are usually VERY light on the powder. If you use a load that light for a RN or SWC bullet, you could squib the load or stick a barrel in the bullet as you just won't get the pressure you need for the round.

Hollow point bullets look just like RN or JSP's, but the difference with these is often the length or the depth to which they are seated. If there is a hollow cavity in the bullet, weight is added by lengthening the bullet.

So it sounds like I can use jacketed GDHP data for FMJ bullets of the same weight - Do you agree?

DWARREN123 · January 6, 2009, 10:40 AM

Basically yes, but always be aware that small diferences in components can make a big difference in pressure. Do not load at max, work up loads. Any component change can be a surprise so do 10 or so and check how they run in your firearm.
Having said that I use data for like types of components and have had no problems but I do not go near max loads either.

Sam06 · January 6, 2009, 10:45 AM

Check this out:

http://stevespages.com/355p_4_115.html

You can start at the bullet weight for most any given bullet(115gr Whatever point) But you will need to work up the load to your pistol.

winter5470 · January 6, 2009, 11:04 AM

Great - thank you!

January 5, 2009, 01:59 PM	#1
winter5470 Member Join Date: January 5, 2009 Posts: 19	Load data I am new to reloading. I bought and read the ABC's of reloading and purchased the 49 th edition of the lyman handbook. I want to load 9 mm 115 grain CMJ to start. I have shot a few of a friends reloads with 4.2 grains of titegroup (115 grain CMJ) so I thought this would be a good place to start. It seems to be safe in my gun. I open my Lyman book (to check the load data) and it does not even list a 115 FMJ. I know having more manuals would be a good idea but, the only 9 mm 115 grain is a JHP. This seems strange since I see a lot of people shooting 115 grain 9 mm. My question is - is it OK to use JHP data for a FMJ relaod of the same weight (ie, 115 grain)? Thanks

January 6, 2009, 10:40 AM	#3
DWARREN123 Senior Member Join Date: January 22, 2006 Location: BETWEEN TN & KY Posts: 1,758	Basically yes, but always be aware that small diferences in components can make a big difference in pressure. Do not load at max, work up loads. Any component change can be a surprise so do 10 or so and check how they run in your firearm. Having said that I use data for like types of components and have had no problems but I do not go near max loads either. __________________ Have a nice day!

January 6, 2009, 10:45 AM	#4
Sam06 Senior Member Join Date: May 19, 2008 Location: Fayettenam Posts: 1,086	Check this out: http://stevespages.com/355p_4_115.html You can start at the bullet weight for most any given bullet(115gr Whatever point) But you will need to work up the load to your pistol. __________________ The two most abundant elements in the universe are hydrogen and stupidity.

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January 6, 2009, 10:29 AM	#2
winter5470 Member Join Date: January 5, 2009 Posts: 19	OK - I may have found my answer on another thread Seven wrote: You can typically use the same data for different style bullets, unless the bullets are drastically different in shape. Two of the most obvious examples include full wadcutter bullets and hollow point bullets. Wadcutter bullets are designed to be loaded flush or close to flush in the case, leaving very little internal space for the powder. Therefore, data for wadcutter rounds are usually VERY light on the powder. If you use a load that light for a RN or SWC bullet, you could squib the load or stick a barrel in the bullet as you just won't get the pressure you need for the round. Hollow point bullets look just like RN or JSP's, but the difference with these is often the length or the depth to which they are seated. If there is a hollow cavity in the bullet, weight is added by lengthening the bullet. So it sounds like I can use jacketed GDHP data for FMJ bullets of the same weight - Do you agree?

January 6, 2009, 11:04 AM	#5
winter5470 Member Join Date: January 5, 2009 Posts: 19	Great - thank you!