Savage 10 headspacing a 308 barrel

[jo2015]

you need to use a small base die

[Zero333]

You're correct. But before buying a small base die, he can try screwing the die as far down as possible, with a bit of excess overcam.

I've had this issue before and all I did was overcam the FL die as far as possible and it worked.

[joeb33050]

I fl size brass and use that brass to set headspace when changing barrels. In 223, 22-250 and 308 the fl dies size the case to ~ .002 under the RCBS Precision Mic zero.
On occasion I find a case that has correct headspace per Precision Mic, but when fl sized, still won't go in the gun.
I take a spare barrel, put the case in the chamber, and tap the head with a plastic mallet. Tap, slightly!
Each tap, try the case in the gun.
All cases eventually go in all guns.
I don't know WHY cases that measure for headspace correctly don't go in some guns, but it happens to me occasionally.

[joeb33050]

I fl size brass and use that brass to set headspace when changing barrels. In 223, 22-250 and 308 the fl dies size the case to ~ .002 under the RCBS Precision Mic zero.
On occasion I find a case that has correct headspace per Precision Mic, but when fl sized, still won't go in the gun.
I take a spare barrel, put the case in the chamber, and tap the head with a plastic mallet. Tap, slightly!
Each tap, try the case in the gun.
All cases eventually go in all guns.
I don't know WHY cases that measure for headspace correctly don't go in some guns, but it happens to me occasionally.

I received a Shilen 22-250 barrel, put it on a M10 action and shot it. Some cases refused to chamber. I went through the lot of 89 cases, and found that 5 of the 89 had headspace ~-.002" on the RCBS Precision Mic, and would not chamber in the shilen barrel. Using a M110 spare barrel, a few light taps got each of the cases in the 110 chamber and cases chamber easily in the shilen barrel..
Cartridge headspace can be correct and some/few cases will not chamber.

[RC20]

you need to use a small base die

No he doesn't.

Why don't we let him get into this before we introduce more complexity and opinions.

There are 3 different takes on how to resize a case. FL works just fine.

Let him work out how to get the measurements and bump back to .002 or .003 and he will have good results.

I happen to use FL so I believe I can advise him well in that regard.

Latter if he wants he can get into the wonderfully nuanced world of necks size, small base size, zap 7 and Z 9.