6.5 PRC with IMR 7977

deerhunter64

Well-Known Member
Joined
Aug 30, 2018
Messages
86
Location
California
I am finally trying to get my GA Precision Crusader in 6.5 PRC up and running. After months and months of searching the only powder I found which is suitable is IMR 7977. I have 8 pounds of the stuff and nothing else is available. This shortage is insane! Anyone using this powder with 140 to 143 grain bullets. Bullets are even seriously hard to find. I have 143 ELD-X and 140 Accubonds. I might be receiving some 147 ELD-M relatively soon. The only powder I will have for quite some time is IMR 7977. Thanks.
 

vancewalker007

Well-Known Member
Joined
Mar 30, 2013
Messages
525
You should be able to find a load with 7977. I've been shooting it and H1000 in my 7 LRM and my 6.5 PRC and they both shoot very good.
 

deerhunter64

Well-Known Member
Joined
Aug 30, 2018
Messages
86
Location
California
Thanks. I hit the range today and had pretty good luck with the 140 Accubonds. For some reason I am having better luck with them than the 143 ELD-X which seems okay since one day I might get drawn for elk.
 

ApollosMagnum

Active Member
Joined
Feb 15, 2021
Messages
26
Location
Tennessee
I just did some testing with 7977 and 156 EOL at .010 off the lands:

26" barrel, .30 cal suppressor
3 shot groups

56.0 2778 SD 14.6
56.5 2825 SD 21.5
57.0 2850 SD 19.8
57.5 2903 SD 10.7 (heavy bolt lift, slight ejector mark)

Anybody else have velocities to report? I was hoping for a little better.
 

TXTrained

Well-Known Member
Joined
Jan 22, 2019
Messages
96
Location
Brazoria TX
I
RE: 6.5 PRC & IMR 7977
My results were similar to yours on 4/3/21
56.8gr...2821/2856/2854
57.0gr...2867/2862/2852
57.5gr...2829/2863/2885
I also has 3 heavy bolt lifts.
I tried it a second time
57.4gr-2889
57.4gr-2862
57.5gr-2888
57.5gr-2872
56.8gr-2826
56.8gr-2830
57.6gr-2871
Its still not as fast as I'd hoped.

This powder may be too slow burning for my 6.5 PRC.
It did work very well in 7mm Rem.Magnum


I was not impressed with this load..
I will say this ..I had much better results with IMR 4831
 

ApollosMagnum

Active Member
Joined
Feb 15, 2021
Messages
26
Location
Tennessee
What length barrel are you using? I've actually got some IMR 4831 but I figured it would be too fast burning. I'll give it a try, I don't really have anything else that might be better.
 

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