milboltnut
Well-Known Member
If my memory serves me correctly IMR 4064 is the powder for the 270WCF and replaced it's original powder 1015 to Dupont 15 1/2 to IMR 4064. H4831 gives the highest velocity
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I have a Kimber 270 win. Loads so far and both 3/4 in @100 yardsI am a long time user of H 4831 / H 4831SC in three of my 270win rifles with 130 Grn and 150 Grn. bullets and IMR 4350 with 130 Grn bullets in a friends 270 win rifle with a 22 inch barrel Matched Winchester cases and Win LR Primers !
I will give it a try i will have to find the Sweet spot when it comes to the COL. ThanksBeen shooting 59 grains of h4831sc and 130 Nosler BT for 20 years out of model 700. Kills deer like they were struck by lightning.
Thanks for the intel i will have to find the best COL. The magazine for my Kimber can't go past 3.32 i measured this last night so i will have to find what works. Thanks againH4831 is one of those powders that you probably can't get too much of in a 270 win case. The maximum SAMMI pressure is 65,000 psi. Hogdon states in their data that 60 grains will create 59,000 psi. It is definitely a compressed charge as it is basically all you can fit in a case without deformation. Lee manual says 60 grains will get to 63,000 psi.
I have found in 270 win and 260 rem that H4831 likes to be compressed. A drop tube is your friend when loading charges like this. In any case you probably can't get enough H4831 in a 270win case to go over 65kpsi with a 130 grain bullet.
If you don't like compressed charges that's fine. There's plenty of powder that work in the 270win.
Good luck and shoot straight y'all
I've found the nosler bt bullets not super sensitive to seating depth. I set to mag length and shoot it. I don't have the time or patience to perform seating depth tests find every .10"of accuracy. I rarely use the 270 past 350 yards in Pennsylvania. So I sight in 2" high at 100 and hold right on from 25 yards to 300 yards. Zero brain required point and squeeze the triggerI will give it a try i will have to find the Sweet spot when it comes to the COL. Thanks
That's funny you say that because my COL using 130NP is 3.20. I will be using the 130 SST for Elk. Due to my shoulder problem i might not be able to use my 300 Win mag any more. Thanks for the responseI've found the nosler bt bullets not super sensitive to seating depth. I set to mag length and shoot it. I don't have the time or patience to perform seating depth tests find every .10"of accuracy. I rarely use the 270 past 350 yards in Pennsylvania. So I sight in 2" high at 100 and hold right on from 25 yards to 300 yards. Zero brain required point and squeeze the trigger
That's funny you say that because my COL using 130NP is 3.20. I will be using the 130 SST for Elk. Due to my shoulder problem i might not be able to use my 300 Win mag any more. Thanks for the response
I have been using 165 Grain NP for many years now and have taken Moose/Elk/Bear/Deer/Caribou. If it wasn't for my shoulder issue i would be using my 300 win mag for Elk. Unfortunately i can't find any 140 Accubond right now. But i appreciate the intel on the expatiation of the SST. Thanks againI would use the nosler partition or accubond for elk. The sst and bt can expand to quickly and blow up at close ranges especially at 3000 FPS. I would shoot the 140-150 accubond for elk or the partition. When I decide on a elk hunt I'm taking my 338 win mag with 200 grain accubonds.
I have been using 165 Grain NP for many years now and have taken Moose/Elk/Bear/Deer/Caribou. If it wasn't for my shoulder issue i would be using my 300 win mag for Elk. Unfortunately i can't find any 140 Accubond right now. But i appreciate the intel on the expatiation of the SST. Thanks again