Hi all Papa is looking to build a 7x57 for 15 year-old Granddaughter.

**8mm RUM** · 02-22-2023, 10:44 AM

Most our rifles are odd balls, we load and keep 300/500 rounds for each.
Try to find 247 Weatherby, or 300 Norma mag. Even a mainstream gun can be hard to buy factory ammo 338.378, even my beloved 8mm rem mag.

**Fuj'** · 02-28-2023, 06:07 AM

7x57 is a great round. PPU usually keeps a good stock and can be ordered. As for needing
the longer throat ?? The 7x57 has a decent length on the neck. Generally a SAMMI reamer
will let a 175 grain bullet be about .020" off the lands. But this can be misleading since
bullet profiles are all over the map.

Now if it were me, and being very popular again, I'd build her a 284 Winchester. If she
grows up with it, there's just more options. But again, Nothing wrong with the 7x57 !!

**PhilC** · 02-28-2023, 11:06 AM

Originally Posted by Fuj'

Nothing wrong with the 7x57 !!

Nope, sure isn't, then again, I've been a 7mm fan for a long time.

**nksmfamjp** · 03-01-2023, 07:17 AM

I would limit myself to bullets 140gr and under. With that ai, and a new rifle, 2850 or so ought to be possible, but not much more.

Almost as an aside, the 6.5x55 would give you a unique round, lapua brass option and a bit more speed at modern pressures. I have a nice 140gr load at 2900 from a 22” barrel.

**8mm RUM** · 03-01-2023, 12:58 PM

Cool.
I have the AI dies coming, 8 weeks out.
I have the barrel nut and wrench ordered too.
I found a place I can rent the Go No go gauges, round trip $31
I'll order the Shaw barrel this week or so 12 week turn a round on that too.
I had to work on the Ruger rotary magazine to get the shorter 7x57 cartridges to feed, but they work fine now.
Slowwly coming together.
When I get it together I'll put up some pics.

**Blue Avenger** · 03-01-2023, 08:04 PM

Some cringe and think it is the most dangerous thing in the world.
And some of us size cases in our Dies and set the headspace to the case our die sized. couple pieces of scotch tape on the head for a No Go.
Check your case protrusion on barrel before you assemble. If there is any problem later, you have eliminated that problem and do not have to disassemble wondering about it.

**PhilC** · 03-02-2023, 09:20 AM

Originally Posted by Blue Avenger

Some cringe and think it is the most dangerous thing in the world.
And some of us size cases in our Dies and set the headspace to the case our die sized. couple pieces of scotch tape on the head for a No Go.
Check your case protrusion on barrel before you assemble. If there is any problem later, you have eliminated that problem and do not have to disassemble wondering about it.

Works for me.