Quote from: Treeman on Apr 14, 2024, 10:12 PMMy mold drops smaller than sizer bullets ?
Is it my lead, mold ?
I can size bullet down after powder coating.

What is stamped on the mould, and what is stamped on the sizer.

Are you using a micrometer for measuring ?

Quote from: Treeman on Apr 15, 2024, 07:39 AMThe introduction of smokeless was not a caliber ?

Correct, it is part of the bigger picture - a preliminary step leading to the other advances.

The military cartridges (7.62x53R, 303, 8x57) hail from the same era.

The introduction of smokeless was not a caliber ?

Maybe one can add that the first big introduction was the metallic cartridge. Thereafter, the change from black powder to nitro powder.

Then the different firearms and calibres. The Colt revolver in 45, the Lee Enfield rifle in 303 in the English speaking world together with the 9mm and the 8x57 in the German speaking world.

I would agree on the 308 as well. It set a standard for military and civilian work.

The first mid sized military cartridge was the 7.92x33.

My mold drops smaller than sizer bullets ?
Is it my lead, mold ?
I can size bullet down after powder coating.

Quote from: big5ifty on Apr 03, 2024, 09:55 AMWhat an eye opener.

My Sheffield 1" micrometer shows 0.358.

The cheapo electronic vernier from Builders is lying to me.

That is quite normal.  A vernier can never be accurate to within 2 thou.  That's what micrometers are made for.

Adendorf sell a cheap Chinese micrometer for around R225, and it works surprisingly well.

I don't think there is much choice of factory ammo in some of these calibers.

I would venture that in some ways the 30 30 , .22 and the .303.

This question is so broad, the .458 Win changed availability of big game rifles, the .22 paved the way from Flobert to 22 Magnum the world wide start shooting rifle.
The 9 mm Parra changed everything in regard to standardization.
The Spenser rifle was the first repeating brass cased ammo rifle, must have changed a lot of things that.
The Snider and Martini henry were also game changers.
The 6.5 Creedmoor was also a big game changer in that it introduced gender flexibility for shooters wanting to express themselves.
The 12 G and 410 shotguns made international ammunition available, every shop had both as standard, as in opposed to what was before and who carried stock for your choice of shottie -4 G - * G - 10 G - 11G - 12/14 G - 12,14,,16,18,20,24, + the 64,55 Maynard.

The 8mm Lebel changed the everything as it was the smokeless powder debut.

So ??
oh and of course the 50 BMG, introduced a long time ago for the guys that were really trying to prove they NOT Creedmoor types.