H380 in the AR10-DI

[rogn]

Ive gotten a couple of good sized boxes os Nosler and Sierra BTHPs in,168 & 180 gr., guess the pipeline is starting to refill slowly. I found a few jugs of H380 on the back of the shelf, from another time, and I was wondering if anyone has used this powder in an AR10 / 308 rifle. My most recent experience with it has been in a couple of MN 91/30s, in which the results were near fantastic. I don't see many listings for it in the manuals, but where its listed the performance seems good. Is it compatible with the AR10 DI system.?

 

[LESLEY]

H380 will let the bullet leave the barrel. Will you hit the target . If it is under 10 yards yes. Over that good luck. H 380 and a 308 go together like Obama and the NRA

 

[finnaddict]

H380 will let the bullet leave the barrel. Will you hit the target . If it is under 10 yards yes. Over that good luck. H 380 and a 308 go together like Obama and the NRA

Not true. I recently developed a load in .308 26" barrel using H380 and Norma SPT 180gr bullets. The result... .5 MOA or less at 100 yds.
Avg. 2520 fps.

 

[rogn]

That clears things up……? It does sound as though H380 may be on the slow side. Ill have to try a load in my Win brass, its the lightest of all the cases I have-almost a 30 grain range, Winny thru IVI.

 

[trhodes]

+1 on finnaddict. I've had great results with H380 and both 168 & 180gr SMK Loaded at 45 and 44gr respectively.

Now, this was in rem700 26" heavy contour 1:12 not an AR.

I'd LOVE to have one of those jugs you found!

 

[rogn]

Re: H380 in the AR10-DI/ results

Managed to do some shooting today, and worked up a load for today. Wind NNE5-12mph, about 1/4 value, temperature 30-32*F, and overcast. LC cases, wgt around 181gr, CCI 250 primers. Started w/168 SierraMK worked up from less than 45 gr. Had astonishing vertical at 340yds. as much as 8". worked up to 47+ grains and vertical dropped to < 1". Tried a 3 shot w Nosler 168CC and vertical was around an inch, horizontal 2 1/4". H380 seems a tad slow ,but the POI was superimposed over groups w/Varget and RE15, so I guess the velocity is similar. Ill give it a try w/ 175s in a few days. Just too unpleasant to set up the Chrony and dither around w/ it. Ill do that on the days when I can feel my fingers. TR I only found 2 1pounders and there are 3 shooters in the family, otherwise I might share.