.257 125gr flat base bullets and H4831SC
- Thread starter lackeyse
- Start date
- Location
- Winnipeg,Man.
In my book there is only one load for H4831.....45.0 gr at 2566 fps. highest load...49.0 at 2770 fps. OAL...3.010
PerversPépère
CGN Ultra frequent flyer
- Location
- Shawinigan (Quebec)
Isn't H-4831 a tad slow for 125gr. bullets in a 25-06? Tried H-4350?
PP.
PP.
I am game for anything. I have lots of IMR4350 and H4831SC. I am looking for any suggestion that should work well with the 125's. Accuracy being the most important. Any data is appreciated.
I could be wrong but I assumed that the velocity created by either of these powders would be pretty even with the 4831 creating less pressure being that it is a slower burning powder.
Thanks for the line on Steve's pages. I see he has used 45gr of H4831 as a starting load and stopped at 49gr. No mention of any 4350 H or IMR.
I'm using a much slower powder than H4831 in a 25-06 even with 120 gr. bullets and getting good performance. The combo is 120 gr. Partitions over 55grs. IMR 7828 for 3280 fps. This out of a Ruger 1B, 26" bbl.
Accuracy is in the WOW range.
This is my 3rd 25-06, and I've tried powders like
H4350, H4831, Norma MRP. IMR 7828 is the best performer of the bunch with heavy bullets at least in the #1.
Accuracy is in the WOW range.
This is my 3rd 25-06, and I've tried powders like
H4350, H4831, Norma MRP. IMR 7828 is the best performer of the bunch with heavy bullets at least in the #1.
I think the slower powder would require slightly more volume to match the velocity, but doesn't really matter, as they would be within a grain anyway. Use whatever one shoots the best.
Damn, thats fast! You're only 40fps behind the 257 wby.
I think the slower powder would require slightly more volume to match the velocity, but doesn't really matter, as they would be within a grain anyway. Use whatever one shoots the best.
Damn, thats fast! You're only 40fps behind the 257 wby.
That is fast. I'm expecting somewhere around the 2800fps mark with the 125's.
Damn, thats fast! You're only 40fps behind the
257 wby.[/QUOTE]
Yeah, I know it is. But there are no pressure signs at all; case life is good, primer pockets tight after several reloads etc.
Ejector tuned to just lay the empties nicely on top of the safety, and that's where they sit after every shot. And above all it is a very accurate load.
257 wby.
[/QUOTE]Yeah, I know it is. But there are no pressure signs at all; case life is good, primer pockets tight after several reloads etc.
Ejector tuned to just lay the empties nicely on top of the safety, and that's where they sit after every shot. And above all it is a very accurate load.
120 gr Partitions, Hornady HPs, and Speer spitzers can all be driven in excess of 3200 using H870.
You need magnum primers to light it up and get good accuracy. Standard primers leave a lot of unburned powder in the barrel, and on the snow in front of the muzzle.
Ted
You need magnum primers to light it up and get good accuracy. Standard primers leave a lot of unburned powder in the barrel, and on the snow in front of the muzzle.
Ted
120 gr Partitions, Hornady HPs, and Speer spitzers can all be driven in excess of 3200 using H870.
You need magnum primers to light it up and get good accuracy. Standard primers leave a lot of unburned powder in the barrel, and on the snow in front of the muzzle.
Ted
I had H870 in stock when working on loads for the 25-06, but kinda had it reserved for use in 30-378. Got as far up the list as 7828 and decided to leave well enough alone.
It's an interesting observation though. Just from memory I don't think H870 looks like the ultimate powder in many manuals; if it had I think I would maybe have tried it.
I've never tried anything other than Federal 215s with powders like H4831 and slower, or with ball powders.
H870 was a preferred powder for 200 gr. bullets in the 300Wby too, but in mine it came through about 100 fps slower than the book number (around 2900) and I didn't want to push it any harder.
