IMR 7977 in 300 PRC

[m1ajunkie]

Wondering if any of you have tried IMR 7977 in their 300 PRC loads? I understand this is supposed to be similar to H1000. I've got a jug on IMR 7977 I'm hoping to use with the 250 atip.

Thanks!

 

[abn31c]

Wondering if any of you have tried IMR 7977 in their 300 PRC loads? I understand this is supposed to be similar to H1000. I've got a jug on IMR 7977 I'm hoping to use with the 250 atip.

Thanks!

Gonna find pressure fast with a 250 and 7977.
Just grab some 200.2 bergers for that powder while you look for some slower dust.
.02

 

[m1ajunkie]

Gonna find pressure fast with a 250 and 7977.
Just grab some 200.2 bergers for that powder while you look for some slower dust.
.02

Good deal, appreciate the info. I've got some H1000 on hand that I'll use with the 250 atip.... Just hoping to find somewhere to use the 7977 with success.

 

[Bmghunter]

Look at hodgdon load data for the 250 atip on 300prc. Best speed is us 869, which is the slowest burning powder there appears to be. So it looks like you need extremely slow powders for the 250 atip. I think the 7977 is a bit too fast to get top velocity.

 

[m1ajunkie]

Look at hodgdon load data for the 250 atip on 300prc. Best speed is us 869, which is the slowest burning powder there appears to be. So it looks like you need extremely slow powders for the 250 atip. I think the 7977 is a bit too fast to get top velocity.

Looks like I can find some US869.... maybe I'll pick some of that up to give a try.

 

[Pete Cefalu]

Looks like I can find some US869.... maybe I'll pick some of that up to give a try.

Hi, I'm curious how you did with the US869 and 250 A-Tips.

 

[m1ajunkie]

Hi, I'm curious how you did with the US869 and 250 A-Tips.

I never actually tried the US869 and 250 atip.... really didn't like the US869 powder the little bit I messed with it so I parked it.

 

[Scott Stewart]

Wondering if any of you have tried IMR 7977 in their 300 PRC loads? I understand this is supposed to be similar to H1000. I've got a jug on IMR 7977 I'm hoping to use with the 250 atip.

Thanks!

This is a little late, but I loaded 75 gr of7977 using Berger 210gr VLDH and had a 1/2” MOA . Exact same set up w RL26 same MOA

 

[supercorndogs]

I like 7977 with 208 and 215 in the 300wm.

 

[Kickin45]

Looking to replace RE26 cuz, well……
@supercorndogs
What type of velocity were you hitting?
Thanks

 

[supercorndogs]

7977 is discontinued. I don't think I ever chronoed it. I still have a box loaded to fireform brass but I got a 280 barrel a couple years ago and its mostly occupied my long action. I haven't messed with the wm much since.