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.
I always used h4350 with 165 gr bullets in my 300wsm. I just switched to h100v with same bullets. It shoots .5 to.7 constantly at 3000 fps at 1 gr above minimum charge. The best part is it's much cheaper powder. Jmo Thanks.
I have a 338lm and I'm waiting to try these powders i have on hand for 265-300grs
570
568
LRT
33
Also going to try 570 in 300wm & 264wm
570
568
LRT
33
Also going to try 570 in 300wm & 264wm
N570 is my go to for my 338 LM
I run 300 Bergers in it.
Also found it to work best in my 6.5 PRC with 153.5 Bergers. Both barrels are 31" and make use of the slow power. RL33 is next in both.
I run 300 Bergers in it.
Also found it to work best in my 6.5 PRC with 153.5 Bergers. Both barrels are 31" and make use of the slow power. RL33 is next in both.
