JamesWilson5
Well-Known Member
Has anyone tried n570 in the big 338 caliber .with bullet weights 260 to 285 .and also what's a good powder for 165 grains in 300wsm
N570 powder
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It is now in the list for my 338 Edge. Along with A-Tips.
It seems a little slow for the 285s. Everyone comments that N570 likes a full case and pressure. Same goes for 338 Lapua.
I've got a lot of 285s to get through with 7828.
It seems a little slow for the 285s. Everyone comments that N570 likes a full case and pressure. Same goes for 338 Lapua.
I've got a lot of 285s to get through with 7828.
JamesWilson5
Well-Known Member
I have 2 338 rums how much powder difference is it and velocity between the edge and rum
300wsm. H4350. N550
It's about 5.5 grains by spec. Velocity is 100-200fps but depends on a lot of things. I am trying to compare like to like as much as possible. Based on but not my actual load. 26 inch barrel. 57k PSI. Same amount of shank in the case neck.
A 338 RUM running a 285 ELD-M over 85.2g of IMR 7828, 2669 fps Using a spec? case volume of 113 (wikipedia). Ammoguide says 110 capacity
A 338 Edge running a 285 ELD-M over 91.7g of IMR 7828, 2925 fps Using my actual case volume of 116.8
These are not "actual" but it is the speed I run my 338 Edge at. It has 30" barrel and I run at closer 52k PSI.
