There’s a saying about fury, - and a woman scorned. Norma, please bring back your 7mm Saum brass. Me and the other 43 guys worldwide that shoot the cartridge will never complain, again 
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In LR rifle bull’s eye chasing, 1.2 grains of powder, going either way, may test your safety glasses or miss the black. 1.2 grains of bullet weight difference will put you out of the 10 ring. 1.2 grains difference in your case’s brass weight might throw you the tiny width of the “X”’s white stick lettering.
But 1.2 grains of what turns out to be elusive, migrating, squashed up anvil in your lug recess after sighter 2, in a 45 second shot pair fire match means game over.
It turns out that 1.2 grains is the magic amount that at once, a bolt won’t close on, a contorted pinky finger can push away without ever perceiving, and a grease film can suspend against gravity such that it can hide anywhere. I think the record for resolving such a problem is about two meals later.
I don’t want to run any cases until the pockets are loose or weak and primers fall out, there’s just no 7 saum brass to buy. This has been true for years now, before Covid. The availability outlook is even bleaker today because ADG seems to avoid the currently-open main supplier role, and Lapua and Perterson must know something negative about it that we don’t, passing, hard.
I’m even wondering if the 7 REM mag reamer could be run in a virgin .284 chamber to convert it without starting over. I know it’s longer but It seemed narrower than a .284, though, at the point of a .284’s shoulder.
If the saum brass picture is permanent, I won’t chamber more barrels for it, but I have a number of new .284’s - although I want more capacity than that to push the heavies, without wasting perfect tenons and barrel length, by starting over. I’d keep some and retrofit others if that was a possibility.
.In LR rifle bull’s eye chasing, 1.2 grains of powder, going either way, may test your safety glasses or miss the black. 1.2 grains of bullet weight difference will put you out of the 10 ring. 1.2 grains difference in your case’s brass weight might throw you the tiny width of the “X”’s white stick lettering.
But 1.2 grains of what turns out to be elusive, migrating, squashed up anvil in your lug recess after sighter 2, in a 45 second shot pair fire match means game over.
It turns out that 1.2 grains is the magic amount that at once, a bolt won’t close on, a contorted pinky finger can push away without ever perceiving, and a grease film can suspend against gravity such that it can hide anywhere. I think the record for resolving such a problem is about two meals later.
I don’t want to run any cases until the pockets are loose or weak and primers fall out, there’s just no 7 saum brass to buy. This has been true for years now, before Covid. The availability outlook is even bleaker today because ADG seems to avoid the currently-open main supplier role, and Lapua and Perterson must know something negative about it that we don’t, passing, hard.
I’m even wondering if the 7 REM mag reamer could be run in a virgin .284 chamber to convert it without starting over. I know it’s longer but It seemed narrower than a .284, though, at the point of a .284’s shoulder.
If the saum brass picture is permanent, I won’t chamber more barrels for it, but I have a number of new .284’s - although I want more capacity than that to push the heavies, without wasting perfect tenons and barrel length, by starting over. I’d keep some and retrofit others if that was a possibility.
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