I've gleaned what I could from the hammer information posted here. However for economic reasons I need to use some powders not listed here ! I have h1000 , rl 25 , v. n560 , IMR 4831, h4831 , and can get superformance, ramshot big game & LRT if they can be used. L. G . S. has many accurate powders on hand if one of them can be used as well. I hoping some of our members have used some of the powders listed here. Any and all help greatly appreciated i need to get these 131 s on their way! Thanks Tribb
7 prc 1 - 8. twist 131 hammer hunter load data please
- Thread starter tribb
- Start date
Help Support Long Range Hunting Forum
Blackdirt Cowboy
Well-Known Member
What's your case capacity?
According to the information on the internet case capacity is 68.5 grn That's 4.2 less than 7 rem mag. C.O.A.L. is going to be 3.1375". Maybe 5-10 thou. More or less. But I've not got a dummy round as I just got the die set yesterday I will make one up today if possible and send information to you. Thank you Tribb
Blackdirt Cowboy
Well-Known Member
All the powders you listed will be extremely compressed loads. Of those, n560 would probably be the most manageable. You won't get anywhere near max loads with 100% full.
What powder do you recommend other than r23 r26 thank you Tribb
I think you will need a touch faster. Like h4350, n555, RL16, 4831 range
Blackdirt Cowboy
Well-Known Member
I would try rl16, rl17, rl26, or n550.
H4350 and rl19 would be decent alternatives as well.
H4350 and rl19 would be decent alternatives as well.
Has to shorten to 3.1030" to make it feed from the magazine ( Christianson arms). I'll try h4350 and try to find n550&r16&r17
I was just finishing up running QL data for you. I'll make the adjustment to COAL.
What's your barrel length?
What's your barrel length?
22" thanks for all your help
I have some h380 can get more. Also r.s. big game ; n540 ; n150 I can get ! Is this fast enough burn rate area ?
Here you go. My methodology is to use actual cartridge data, run selected powder to max pressure and drop down 3 grains to start load development. Please take note that I used SAAMI case capacity of 84.5 grains and based on COAL and bullet length leaves 72.3 of those grains usable. These are the QL presets for 7 PRC. I would urge you to actually measure water capacity of a sample from your brass. Just insert a spent primer and measure empty and full. If your brass if substantially different, the QL data provided will result in over pressure. For example, recently purchased new Peterson 280AI brass had a case capacity 6% lower than SAAMI and QL preset. I was glad I caught this before pulling the trigger..
If you need anything else, just let me know. As always, start low and work up. I assume no liability for use of this data.
Jon
If you need anything else, just let me know. As always, start low and work up. I assume no liability for use of this data.
Jon
Hey Jon I don't think the download for n555 completely came through. It refuses to open and only has 161 bytes the rest have 2.4 kb ?????
