K31 - 7.5x55 - what are you using?

[kennyc]

Thanks for this, I don't suppose you have the COAL for the stock PPU round do you? Thanks

from my notes mine are 3.001 COAL

 

[Twotone]

Another PPU user.

What powder are you using and where did you find the data?

 

[Twotone]

I just use PPU, 1.5-2” at 100 and I’m not good with i

What powder are you using and where did you find the data?

 

[Twotone]

RS60 works best in mine, N140 will also work, but I prefer the RS60 (RL17) I use the PPU 174grn bullet loaded to the same length as the PPU commercial ammo,(which is where I get the cases from) 48-50 grn of RS60 (work up) and the primers of your choice, always full length resize, neck sizing can cause problems, if you use any other bullet then make up a dummy round to determine insertion depth, the ogive on the GP11 is well back due to its streamlined shape and the chamber was cut to be a tight fit for GP11, SMKs and the like tend to be dumpier and will jam into the lands if loaded to stock length.

Where did you find N140 data for PPU 174grn? Thanks!

 

[25 Sharps]

What powder are you using and where did you find the data?

PPU factory.

By it at £90/100, sell the brass for £35/100 and it becomes not worth loading for

 

[Brno2e]

What powder are you using and where did you find the data?

RS62. Reload Swiss have a great web site and you can also contact them for advice.
I have used N150 in the past too.
A lot of time has been spent searching for information on the net.

 

[Twotone]

RS62. Reload Swiss have a great web site and you can also contact them for advice.
I have used N150 in the past too.
A lot of time has been spent searching for information on the net.

Thanks! I've seen the RS website, they are the only ones with 175grn data it seems. I may contact VV as I've got N140 for other applications and would love to keep it all the same powder but don't think that'll be possible!

 

[Jamsie]

RS60 works best in mine, N140 will also work, but I prefer the RS60 (RL17) I use the PPU 174grn bullet loaded to the same length as the PPU commercial ammo,(which is where I get the cases from) 48-50 grn of RS60 (work up) and the primers of your choice, always full length resize, neck sizing can cause problems, if you use any other bullet then make up a dummy round to determine insertion depth, the ogive on the GP11 is well back due to its streamlined shape and the chamber was cut to be a tight fit for GP11, SMKs and the like tend to be dumpier and will jam into the lands if loaded to stock length.

This ^^^^^

Jamsie

 

[kennyc]

Where did you find N140 data for PPU 174grn? Thanks!

use .308 data

 

[Twotone]

use .308 data

Exactly the same start and end quantities?

 

[25 Sharps]

Exactly the same start and end quantities?

Start at the same work up until you reach pressure signs and back off a bit , or the max, whichever comes first.

Alternatively use the 185 gr bullet data for 7.5x55

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