Difference of 1gr in bullet weight?

CortJestir · November 20, 2008, 01:26 PM

So, I'm pouring over 4 different sources of load data (Lee, Lyman, Sierra, & Hodgdon). I'm loading for a 9mm 124gr LRN (for all intents and purposes - it's a plated RN by Rainier who recommends LRN load data). Some have data for 124gr LRN, some have data for 125gr LRN.

Assuming the same bullet type and material, does that one grain difference matter so much? I would think not as there's probably more variation than 1gr among all the bullets in a batch.

dahermit · November 20, 2008, 01:34 PM

More significant would be the bearing surface between bullets of different shapes. For instance, a 1 ogive round nose compared to a cone-shaped cast bullet like the Lyman. Even then, I have never worried about such small differences as it applies to pressure(safety). In my opinion, 124 cast bullets equal 125 cast bullets of any shape.

WESHOOT2 · November 20, 2008, 01:35 PM

I have extensive 124g Rainer experience; which powder have you chosen?

CortJestir · November 20, 2008, 01:46 PM

Hey weshoot, I'm thinking Titegroup as I have it on hand. I also have Bullseye which I think will work OK.

WESHOOT2 · November 20, 2008, 01:58 PM

I never got good results with any 'fast' choices; I went to 'slower' choices like AA5, HS6, WAP (man I gotta lotta WAP), 3N37, and Alliant Power Pistol.

-OAL 1.130" +.010"/-.005"
-sized case (i sort 9x19, because I can see the difference on target)
-CCI 500 / WSP
-I finish with a LEE Carbide Factory Crimp die; I seat separately

Many report good results with 4.2g Titegroup (many report great results with 5.2g Ramshot Silhouette, or 5.6g Power Pistol).

CortJestir · November 20, 2008, 03:19 PM

Thanks for the data and experience, weshoot. I'm on the lookout for some PowerPistol and others locally to add to my powder cabinet (I don't buy online to avoid the hazmat fee).

rn22723 · November 20, 2008, 05:57 PM

Well, the idea of bearing surface is the best explanation. But, for most handgun rounds you may well have that much variance in bullet wt if you measursed them.....so basically a non issue. The big thing with plated or coated such as Precision or Black Bullet Int is that you do not want the crimp to crease the plating or coating....this could allow for the plating to be stripped off.

November 20, 2008, 01:26 PM	#1
CortJestir Senior Member Join Date: July 7, 2008 Location: Southern CT Posts: 1,406	Difference of 1gr in bullet weight? So, I'm pouring over 4 different sources of load data (Lee, Lyman, Sierra, & Hodgdon). I'm loading for a 9mm 124gr LRN (for all intents and purposes - it's a plated RN by Rainier who recommends LRN load data). Some have data for 124gr LRN, some have data for 125gr LRN. Assuming the same bullet type and material, does that one grain difference matter so much? I would think not as there's probably more variation than 1gr among all the bullets in a batch. __________________ "They have men amongst them who know very well what they are about..." - Lord Hugh Percy, on the events of April 19, 1775 Do you know what you're about? Find out at an Appleseed near you.

November 20, 2008, 01:34 PM	#2
dahermit Senior Member Join Date: October 28, 2006 Location: South Central Michigan...near Posts: 6,501	1 grain difference More significant would be the bearing surface between bullets of different shapes. For instance, a 1 ogive round nose compared to a cone-shaped cast bullet like the Lyman. Even then, I have never worried about such small differences as it applies to pressure(safety). In my opinion, 124 cast bullets equal 125 cast bullets of any shape.

November 20, 2008, 01:35 PM	#3
WESHOOT2 Senior Member Join Date: February 20, 1999 Location: home on the range; Vermont (Caspian country) Posts: 14,324	non-issue, in THIS case I have extensive 124g Rainer experience; which powder have you chosen? __________________ . "all my ammo is mostly retired factory ammo"

November 20, 2008, 01:46 PM	#4
CortJestir Senior Member Join Date: July 7, 2008 Location: Southern CT Posts: 1,406	Hey weshoot, I'm thinking Titegroup as I have it on hand. I also have Bullseye which I think will work OK. __________________ "They have men amongst them who know very well what they are about..." - Lord Hugh Percy, on the events of April 19, 1775 Do you know what you're about? Find out at an Appleseed near you.

November 20, 2008, 01:58 PM	#5
WESHOOT2 Senior Member Join Date: February 20, 1999 Location: home on the range; Vermont (Caspian country) Posts: 14,324	sorry I never got good results with any 'fast' choices; I went to 'slower' choices like AA5, HS6, WAP (man I gotta lotta WAP), 3N37, and Alliant Power Pistol. -OAL 1.130" +.010"/-.005" -sized case (i sort 9x19, because I can see the difference on target) -CCI 500 / WSP -I finish with a LEE Carbide Factory Crimp die; I seat separately Many report good results with 4.2g Titegroup (many report great results with 5.2g Ramshot Silhouette, or 5.6g Power Pistol). __________________ . "all my ammo is mostly retired factory ammo" Last edited by WESHOOT2; November 20, 2008 at 01:59 PM. Reason: DATA FOR RAINIER 124g TCJ-RN .355"

November 20, 2008, 03:19 PM	#6
CortJestir Senior Member Join Date: July 7, 2008 Location: Southern CT Posts: 1,406	Thanks for the data and experience, weshoot. I'm on the lookout for some PowerPistol and others locally to add to my powder cabinet (I don't buy online to avoid the hazmat fee). __________________ "They have men amongst them who know very well what they are about..." - Lord Hugh Percy, on the events of April 19, 1775 Do you know what you're about? Find out at an Appleseed near you.

November 20, 2008, 05:57 PM	#7
rn22723 Junior member Join Date: December 10, 2001 Location: Burbs of Minneapolis Posts: 676	Well, the idea of bearing surface is the best explanation. But, for most handgun rounds you may well have that much variance in bullet wt if you measursed them.....so basically a non issue. The big thing with plated or coated such as Precision or Black Bullet Int is that you do not want the crimp to crease the plating or coating....this could allow for the plating to be stripped off.