RangerPark
CGN frequent flyer
- Location
- Near Edmonton, AB
As I'm going through my 16th pound of Varget in two years I'm looking to make some changes. This year's 8 pounder seemed a tad slower than last year's. Most of my loads need an extra 0.5 grains to reach the same velocities as before. I'm also finding that for my applications, I always end up with a compressed load with no pressure signs whatsoever. I mainly use Varget in .223 (I know it's not optimal but love the convenience) and all manners of .308, from 155 grains SMK to 185 grains Juggernauts, bolts and now a Stag 10.
I was using IMR 4064 before Varget and I switched because of Varget's touted better lack of temperature sensitivity. Truth is in Alberta hunting applications from +10 to -30 I haven't really seen any difference.
With IMR 4064 I would always reach over pressure during load development and would then know where the upper limit was. With Varget, I almost always fill the case so much that the bullets won't sit consistently and I still don't get pressure signs. For example with 180 grain Accubonds over 45 grains. I have to use a lower node with that combo and end up with lower velocities I'm not happy about.
Also, I recently took apart some Federal Gold Medal Match 168 grains and found the mystery powder to look like IMR 4064 but there was only 40.8 grains of it. I know IMR 4064 is not fast enough for 40.8 grains of of it to push a 168 grains SMK to 2700 fps. I was wondering if this could be a powder with a burn rate similar to H4895, only an IMR variant. Anyone have any idea what kind of powder would be used here?
So to anyone who has used both, which do you prefer, especially for .308 semis like the Stag 10? Varget or H4895, or even IMR 4064? I'm only interested in powders that can be had in 8lb containers.
I was using IMR 4064 before Varget and I switched because of Varget's touted better lack of temperature sensitivity. Truth is in Alberta hunting applications from +10 to -30 I haven't really seen any difference.
With IMR 4064 I would always reach over pressure during load development and would then know where the upper limit was. With Varget, I almost always fill the case so much that the bullets won't sit consistently and I still don't get pressure signs. For example with 180 grain Accubonds over 45 grains. I have to use a lower node with that combo and end up with lower velocities I'm not happy about.
Also, I recently took apart some Federal Gold Medal Match 168 grains and found the mystery powder to look like IMR 4064 but there was only 40.8 grains of it. I know IMR 4064 is not fast enough for 40.8 grains of of it to push a 168 grains SMK to 2700 fps. I was wondering if this could be a powder with a burn rate similar to H4895, only an IMR variant. Anyone have any idea what kind of powder would be used here?
So to anyone who has used both, which do you prefer, especially for .308 semis like the Stag 10? Varget or H4895, or even IMR 4064? I'm only interested in powders that can be had in 8lb containers.