Thread: 6mm cartridge comparison

Originally Posted by Friwi

250 savage AI reinvented I guess :-) we are going full circle here

Yeah tell me about it, I should have kept my bloody 250-3000 brass (masses of it) instead of giving it to @nor-west

Din Collings had 6mm-06 and 6mm-06AckImp reamers. It was my habit to admire them and daydream a little whenever I visited the shop. One of his sons will have them now. Easy from 25-06 brass. An interesting QuickLOAD exercise too.

Pretty much. I did look at 250AI but it has a short neck in comparison.

Originally Posted by muzr257

Ive got a 25 creedmoor reamer coming - will be interesting to see how it performs.

Very interested to see how it goes.
what barrel will you use,are you going with a fast twist 1:7.

Sent from my CPH1903 using Tapatalk

Originally Posted by muzr257

Pretty much. I did look at 250AI but it has a short neck in comparison.

@muzr257 this sounds like a candidate for a thread of its own?!? So many questions ��

Originally Posted by Tentman

Yeah tell me about it, I should have kept my bloody 250-3000 brass (masses of it) instead of giving it to @nor-west

Well I did give you a rifle and new 6.5 Creedmoor brass as a swap.

That 131gr bullet sounds cool. Maybe the 25-06 will become a go-to mountain rifle cartridge

Originally Posted by stevodog

That 131gr bullet sounds cool. Maybe the 25-06 will become a go-to mountain rifle cartridge

I think it needs a 1/8 barrel twist, I have 3 .25 calibre rifles all 1/10 maybe the Weatherby can send it fast enough to stabilise?

Yeah true, have to build one...no point dusting off the old 10twists.
The g7 of .330 converts to .670g1

Originally Posted by nor-west

I think it needs a 1/8 barrel twist, I have 3 .25 calibre rifles all 1/10 maybe the Weatherby can send it fast enough to stabilise?

You @nor-west have too many rifles - send me the 224 right away!!

Originally Posted by stevodog

Yeah true, have to build one...no point dusting off the old 10twists.
The g7 of .330 converts to .670g1

Guys in the US using them are reporting actual observed G7 BC of .345 on the 131gr BJ

Originally Posted by GWH

Guys in the US using them are reporting actual observed G7 BC of .345 on the 131gr BJ

Real keen to make a 25 Creedmoor shooting those 131Black Jack

Sent from my CPH1903 using Tapatalk

Has Litz tested this bullet yet and put it in his data base ? If not then it may be yet another one with an unreal BC ?

Originally Posted by LRP

Has Litz tested this bullet yet and put it in his data base ? If not then it may be yet another one with an unreal BC ?

Just found this old thread again. Litz has the 131gr Blackjack listed as .332 G7 and .647 G1

Originally Posted by Tentman

Interesting - could you add the case capacity (in H2O) that you are using for each - I'm trying to figure the differences between 6mm Creedmore and 6x47 (SM or Lapua??) in Quickload

The 6x47 would be the Lapua looking at the charges