Reloading plated 9mm question

[Kirkd]

I went to BGF today. I had picked up Rainers 115 gr RN bullets and loaded with Accurate #7. I checked Accurates web site as well as Lee's book. Both had it listed at 5.7-6.7 gr with 1.140 OAL.

so, I loaded up 5 roads each of the following loads: 5.7, 5.8, 5.9, 6.0, 6.1, 6.2, and 6.3

anyway, none of these powder loads cycled my Sig P226 MK25. So my thoughts was to start new loads starting at 6.4 and run through up to 6.7 in .1 gr increments keeping an eye on pressure signs. Is that where you would go from here??

my Sig cycles with factory ammo and my Missouri 125gr lead bullets with 5.1 gr of longshot.

thanks

 

[The Keymaster]

My Lee book shows 6.6-7.3 with a 1.100 minimum OAL.

 

[The Keymaster]

But...my lee book does not differentiate between Berrys, and Ranier as the Accurate manual does. Must be a significant difference in ballistics between the 2 bullets.

 

[hondatech2k2]

I do not have load data for Accurate, but here is my plated load data for my Mk25

115gr; 4.5gr Titegroup, OAL 1.125
124gr; 4.2gr Titegroup, OAL 1.15

My Mk25 absolutely loves the heavier grain bullets.

 

[Kirkd]

But...my lee book does not differentiate between Berrys, and Ranier as the Accurate manual does. Must be a significant difference in ballistics between the 2 bullets.

The Accurate manual is a free download. They have different loads fir Berry's vs Rainers.

 

[The Keymaster]

Yeah, I checked it out online. I did a little research, and found that the base of the Berry's bullet is heavier. That could explain the difference in the ballistics, and the powder charge. Perhaps Ranier has changed the manufacturing process. I personally see no issue with stepping up .1 grains at a time. That seems like the logical course of action. You might want to test some of the previously loaded ammo in a different firearm. I remember the spring on my P229 being pretty strong.

 

[RSW]

This may not be a big help but I shoot 124gn 9mm round nose Berrys and the starting load of 6.7 cycled just fine and some primer flattening happened at 7.0.
http://www.accuratepowder.com/wp-content/uploads/2010/09/WP_LoadSpec_7-2-13.pdf

 

[mac45]

Seems very odd to me that there would be such a difference between the Berry's and the Rainier.
I'd be curious to see them side by side and compare the bearing surfaces.

That said, you're not at max yet. Working up 1/10gr at a time is exactly the right way to go about it.

 

[Kirkd]

Seems very odd to me that there would be such a difference between the Berry's and the Rainier.
I'd be curious to see them side by side and compare the bearing surfaces.

That said, you're not at max yet. Working up 1/10gr at a time is exactly the right way to go about it.

i actually have both the RAiners and Berry. They look very similiar

 

[Wolverine6G]

I load Accurate#7 also with plated Xtreme bullets. I load 7.5gr and an OAL of 1.130 with 9mm which shoots great in my M&P shield and M&P 9mm

 

[WyldeShot]

I have reloaded both of these too using Titegroup. I believe I used pretty much the same charge.

 

[DIRTROAD]

115gr 9mm I use bullseye 4.4 aol 1.125 have good luck in my p226 mk25

 

[straight-shooter]

I also see that the Accurate website load data has a grain value of 5.7 grns and a oal of 1.140. Never exceed value is shown at 6.7 grns.

Accurate #7 is a slower burning powder so it will fill the case unlike Win231 that I usually shoot at 4.4 grns and only fills the case a little over half.

 

[Volt]

I loaded up some 115 gn Berry's plated with Accurate #7 at 6.2 gn and a 1.130 OAL. Performance was flawless with my new Kahr CW9.

 

[RSW]

Does anyone else use 115 gn plated bullets with Accurate#7?

 

[red_zr24x4]

Never used #7 but i have used a ton of #2.

 

[Volt]

Yes. I use and like #7 with my 115 & 124 grn. 9mm loads. No issues and is fairly clean.

 

[Ben Nelson]

I use #7 with 124- and 147-grain Rainier bullets and have had no issues with the loads.

 

[trophyhunter]

I went to BGF today. I had picked up Rainers 115 gr RN bullets and loaded with Accurate #7. I checked Accurates web site as well as Lee's book. Both had it listed at 5.7-6.7 gr with 1.140 OAL.

so, I loaded up 5 roads each of the following loads: 5.7, 5.8, 5.9, 6.0, 6.1, 6.2, and 6.3

anyway, none of these powder loads cycled my Sig P226 MK25. So my thoughts was to start new loads starting at 6.4 and run through up to 6.7 in .1 gr increments keeping an eye on pressure signs. Is that where you would go from here??

my Sig cycles with factory ammo and my Missouri 125gr lead bullets with 5.1 gr of longshot.

thanks

I had to use 3000 of Rainer's 115 plated RN's two years ago as a substitute for jacketed and I loaded them using Accurate 7. Western's online plated data was garbage, I went to 7.9 at the same COL of 1.140 to get even basic slide cycle and function in Beretta 92's and a 3rd gen S&W. They made power factor floor at 8.3 grains and I went to 8.7 to make 135 PF out of a 92FS.

Gotta watch those Rainer's as they seemed a little long in the tooth, my notes had them at a length of 14.35mm so seating any deeper than 1.140 would have them well into +p territory in a hurry with the charges I was using.