338 LM brass No Headstamp

[ltfirehunter]

I have several hundred rds of new 338 lapua mag brass that has no headstamp on it. Anyone know the possible origins of this brass?

 

[johndoe]

Re: 338 LM brass No Headstamp

If the brass has a little house type looking stamp it is the
military Lapua.

 

[ltfirehunter]

Re: 338 LM brass No Headstamp

It is completely slick, no markings.

 

[lane223]

Re: 338 LM brass No Headstamp

Sound very secret squirrel to me.

 

[Kells81]

Re: 338 LM brass No Headstamp

Where you got it would help sort this out.

 

[gol1]

Re: 338 LM brass No Headstamp

I have some 338 from SM without markings

 

[ltfirehunter]

Re: 338 LM brass No Headstamp

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Poke</div><div class="ubbcode-body">Where you got it would help sort this out. </div></div>
The brass come with the rifle, (packsge deal) but he originally got the brass from buying pallots of unclaimed freight.

 

[MOAxp]

Re: 338 LM brass No Headstamp

Actually you have original 338/416 Sniper brass. This was made by both BELL brass and Lapua.

Welcome to the club of having the original brass from the AMAC/RAP Model 300 rifle and ammo contract.

Brief history - mid 80's Research Armament Prototype started a program to meet a US Mil request - the "AMAC 50" and the 338/416. Hornady was contracted for the first projos and BELL produced the brass, RAP switched to LAPUA for the 250K round production ammuntion run. What you have is more than like the Lapua lot. Good but a bit soft compared to today's brass. If it has been fired, the headspace did vary between the 338/416 to the CIP standards on the LAPUA ...

 

[ltfirehunter]

Re: 338 LM brass No Headstamp

Brand new, unfired. I still haven't counted it all, but probably I the 500rd range

 

[former naval person]

Re: 338 LM brass No Headstamp

Don't ask, don't tell. Enjoy...just work up the load and mike the case heads as you work up. JMHO

 

[ltfirehunter]

Re: 338 LM brass No Headstamp

Definetly gonna take my time with these

 

[High Binder]

Re: 338 LM brass No Headstamp

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ltfirehunter</div><div class="ubbcode-body">Definetly gonna take my time with these </div></div>

Sounds like it's from the R&D stage which means it my not have been optimized as of it's making. Be careful & and start light.

 

[MOAxp]

Re: 338 LM brass No Headstamp

No the contract specified no markings on brass or rifles - the rifles in the system had assembly # but no other. The few (less than 10) in civ hands were marked per ATF requirements.

Original loads were with IMR 7828 and 250gr lock base Lapuas

 

[onechance]

Re: 338 LM brass No Headstamp

I had some of this brass as well, as stated above it's softer than the new brass.

 

[ltfirehunter]

Re: 338 LM brass No Headstamp

Any recomendations on powders? I t will be a little while before I start due to its not built completely yet.

 

[BlackHeart2]

Re: 338 LM brass No Headstamp

try weighing the brass that might help find an orign. i load 250 scenars with 97 gr retumbo, fed 215's, lapua brass and they push at 2905 with .562 group or less. also 250 lock base 98gr retumbo, fed 215's, lapua brass,they were goin 2899 and best group was.245 out of 700P w/26in barrel including the brake. those speeds were with the bullets tight against the lands so i pulled them back to 3.624 for the lock base and 3.636 for the scenars that is .001 off the lands so they will be a little faster. hope that helps. i just got AIC chassis for that 700P .338 Lapua if anyone is interested in the factory H.S. stock and Accurate Mag trigger gaurd and magazine. SEMPER FI