problem with my 308 ammo

Sunray said:

40 grains of IMR4064 is a tick below current minimum of 41.5 for a 168. Not enough to worry about, but that card is old. Buy a Lyman manual. Max is 45.9(Compressed). Compressed loads are nothing to worry about.
You need to check case lengths(Trim, chamfer and deburr as required only), FL resize every time(no neck sizing only, ever, for semi-auto's, lever actions or pumps. ) and watch the OAL(2.797" is ok. 2.800" is MAX. And that's from the point of the bullet to the flat of the case head, not the ogive of the bullet.) for any semi-auto. No crimp is required for a semi-auto either.
Not FL resizing will cause your issue. So will case length. Set your vernier calipres(preferably digital) to 2.015" for .308 and use 'em as a gauge to check lengths quickly.
There's no such thing as a "case length head space gauge". Cartridges do not have headspace. There are case length gauges and headspace gauges(that have nothing to do with the case), but not one in the same.

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dgod said:

I just checked my books (Some Of Them),

1) Lyman #50, shows 168gr HPBT, IMR-4064 40.0, COAL: 2.775, yields 2415fps
2) Lee Modern Loading, 2nd Edition, 41.5 yields 2518, up to 45.9 at 2766
3) Hornady #8, IMR-4064 36.1 at 2100, 41.6 Max at 2500

Hope this helps
Dan

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berettaprofessor said:

Okay, for those who missed it, the OP said in post#15 that he switched from neck sizing to full length sizing as suggested by Grumulkin, and his problem went away. Not an unusual solution for a semi-auto.

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243winxb said:

Yes, if you can close the bolt (action) with out breaking off the handle.

I seen a guy lock the bolt down on a Rem 40X in 222 with a block of wood.

Sizing in the chamber is not recommended.

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Nature Boy said:

cool looking rifle.

At least get a case gage, or even better, a set of Hornady headspace comparators

It's important to know how much sizing you're doing to your cases

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Blue68f100 said:

Nice looking gun. Did you say who made it?

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