20in 6.5 PRC 140 class powders?

[N2TRKYS]

Not very fast. 2685 with factory barrel. But again stupid accurate

Ouch. Yeah, I wouldn’t be happy with that.

 

[Ganderzone]

Really like 4831sc in my 20" pushing 140's at 2890, tiny groups, temp stable. I have n565 and h1000 I use in my 7 PRC but with how well 4831sc shoots I have no need to mess with it, 20-40fps won't make any difference on target.

 

[bowrunner81]

I’d try 4831sc out of a 20” barrel.

 

[Ganderzone]

I will add, if trying 4831sc buy atleast 2# of a matching lot or blend them before starting work up. I've seen some pretty wild lot to lot variations, always extremely accurate but I've seen my charge vary by as much as a grain to stay in a node.

 

[Pilsner]

Having great luck with H4831SC and H4350 out of my 6.5 PRC with 18" CF BSA barrel. Easily getting low to mid 2900's and 5 shot groups in the 0.25-0.5 MOA range. No pressure signs with either. 143/147 ELD-Ms.

 

[ID-Muley]

Having great luck with H4831SC and H4350 out of my 6.5 PRC with 18" CF BSA barrel. Easily getting low to mid 2900's and 5 shot groups in the 0.25-0.5 MOA range. No pressure signs with either. 143/147 ELD-Ms.

That’s crazy good… you longer than 2.95 OAL? No preference on either?

 

[Pilsner]

Right at 2.950" and my preference is for 4831SC since I can find it/have more of it. We are at 2375' of altitude if that matters. I have tended to drop back to around 2900 flat since accuracy didn't degrade and brass/powder is expensive these days, so longer brass life and less powder used for acceptable results = more better. Giving some thought to trying out 130 grain Sierra match burners or TMK's but I also hate to mess with a recipe that is working...

 

[coast range]

Is 4831sc typically faster than n565? I didn’t think it was maybe I am remembering that wrong

 

[ID-Muley]

Is 4831sc typically faster than n565? I didn’t think it was maybe I am remembering that wrong

Yes it’s faster. It’s right next to n560 on the chart.

 

[jonnyviceroy]

I have used n560 with really good results. I haven’t found the temp instability to be nearly as dramatic as forums make it out to be. The speed, sd and es has been great. Pretty much the majority of all ballistic calculators make up for the minute differences in temperature swing. With the appropriate temp slope in my rangefinder I have had zero issues across a bunch of different kind of hunts.

 

[Pilsner]

Sorta-on-topic question:
Is N560 a good substitute for H4831sc and H4350 powders?
I see the Vihatvohouri powders on the regular online and locally but have never worked with them.

 

[crowlja]

Im still in load workup mode. Ive tried 4831sc and H1000. The 4831 is looking to be able to give me the speed im looking for. Have hit max or pressure signs yet and im at 2850ish with the 140ABs.
All I've done so far was tested the two powders with the 140 & 150 accubonds, 5 rds each, and shot some SGKs with the two powders as well.

I dont think I saw H4359 in the books for ut...I have a ton of this powder, how's it fairing out for those of you using it?

 

[crowlja]

Having great luck with H4831SC and H4350 out of my 6.5 PRC with 18" CF BSA barrel. Easily getting low to mid 2900's and 5 shot groups in the 0.25-0.5 MOA range. No pressure signs with either. 143/147 ELD-Ms.

Where are you finding load data for the H4350? I have a ton of it but didn't see that one listed.