who made ABM 300 win mag brass ?

[rsmithsr50]

soooo when berger bought out/merged with ABM, the ABM brass was sold off. the question is who made the 300 win mag brass ? is there a way to tell ? WILL AB speak up ? ( I bought 500 pcs)
thanks

 

[46and2]

I asked the guys on LRO. I've been told "supposedly Norma."

 

[rsmithsr50]

yes I have heard rumors, hoping for some facts

 

[46and2]

I was hoping for facts also.
I still have two lots of 225 pieces ( Winchester) that have been " match" preped and culled for neck thickness variation.
Otherwise I would have bought the ABM.
It would be my luck it would be Remington or worse.

 

[46and2]

yes I have heard rumors, hoping for some facts

When you go through your brass let me know how the neck/wall thickness variation is. Norma is supposed to be lighter than winchester.

 

[rsmithsr50]

weight is 216 to 221. I pulled 9 50 count "groups' between 219.9 and 217.1 ( 450 out of 500).

 

[46and2]

That's not bad for a case that size.
If you get the wall parameters let me know.

 

[rsmithsr50]

MY LOTS of 300 win mag( corrected, original was wrong)
win ave 233
rws ave 272
fed fc16 244 (mil pull down)
nos 217
abm 218

so my guess is that nosler and abm came from the same source

 

[46and2]

My Win. lot is 237gr and 238gr

 

[lb-ft]

Midsouth Shooters Supply has ABM 300 Win Mag brass in stock, on sale, $70/hundred, free shipping. Checked just now and it's still there.

 

[46and2]

weight is 216 to 221. I pulled 9 50 count "groups' between 219.9 and 217.1 ( 450 out of 500).

This review sounds bad but it sounds like your lot is more consistent.

 

[rsmithsr50]

yes well he is a dumbchit. he bought second hand unknown lot brass.
that's is what happens when it aint from the maker/or maker packaged.

This review sounds bad but it sounds like your lot is more consistent. View attachment 1145635

 

[46and2]

yes well he is a dumbchit. he bought second hand unknown lot brass.
that's is what happens when it aint from the maker/or maker packaged.

Is your lot of brass from ABM?

 

[rsmithsr50]

my brass is MARKED ABM.
I assume it was made for ABM.
I assume when berger bought /merged with abm, the brass got sold in bulk to a retailer, who in turn packaged and sold it.
my ABM brass was bought from MIDSOUTH.
I was not expecting miracles. there were some outliers, but overall the brass seems good. the guy above does not list the spread of his 5 "piles", nor how much he bought. I bought 500 and had 11 piles in the end. 9 good piles and then the highs and the lows. my spreads are as low as 0.2 but the largest is only .4 .

 

[D.Stone]

I am pretty sure that it's Norma brass.

Norma makes 300WM brass for Nosler, and I'm pretty sure any of the Lapua marked stuff floating around is also Norma.


Lapua is supposedly still working on making their own 300WM cases.

 

[shoot4fun]

I have no idea who made the ABM brass but I would suspect Norma did. Why? I had 280 Ackley brass from Nosler and Norma and found the weights to be exactly the same. I've noticed the ABM brass on Midsouth and thought about buying. I haven't because of two reasons. First, my 300WM barrel is getting up in the round count and has never been a perfect match for the 230 Hybrids I've shot through it. I have a 9 twist and and an 8.5 twist HV blank on hand and really taking a hard look at the 300PRC (just waiting for brass to be available from multiple sources). Secondly, I have really lost interest in shooting my 300WM in favor of my 6.5PRC. It's a very accurate rifle and I can spot my own hits downrange with the lower recoil. Plus, the 153 Atip is flat shooting and accurate to boot.