WeiserBucks
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- Aug 16, 2016
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Can I safety substitute published data for H4831 vs H4831 SSC ?
Yup, same stuffCan I safety substitute published data for H4831 vs H4831 SSC ?
Different lots of powder will often shoot to different POI, with different pressure.I'm by no means an expert. So take this for what it's worth. I also wondered the same thing. I have a custom 300wsm that had a load developed for it. H4831sc, 65 grains and 215 berger. I was given the data to hopefully reproduce this load. The rifle does hold .5 moa fairly consistent with my hand loads. So one day while I was loading some rounds for this rifle while I was set up I thought it would be very easy to load up some with the H4831. I did and they were loaded exactly the same as the loads with the H4831sc. The next day I went out to shoot. Fired 2 of the sc loads did exactly what I expected. So put in 1 of the others and hit a couple inches low and a couple inches right. Also had stiff bolt lift. So waited a little and tried another same thing except it was now about a 2 inch group. Wait for a little and shot another of the sc load's and right back to where it should be. Now I'm not sure why, but that was my experience with the 2 different powders.
Had the same experience as dmj on a 7 mag. just no sticky bolt but definately didn't shoot the same wih H4831 and H4831SSC everything thing be equal other than the SSC versus the regular H4831. I'm guessing the H4831 and H4831SCC dont have the same lot#Different lots of powder will often shoot to different POI, with different pressure.
What elevation are the loads developed at?, is a question that comes to mind,although it may have be a topic that has already been delt with.I'm by no means an expert. So take this for what it's worth. I also wondered the same thing. I have a custom 300wsm that had a load developed for it. H4831sc, 65 grains and 215 berger. I was given the data to hopefully reproduce this load. The rifle does hold .5 moa fairly consistent with my hand loads. So one day while I was loading some rounds for this rifle while I was set up I thought it would be very easy to load up some with the H4831. I did and they were loaded exactly the same as the loads with the H4831sc. The next day I went out to shoot. Fired 2 of the sc loads did exactly what I expected. So put in 1 of the others and hit a couple inches low and a couple inches right. Also had stiff bolt lift. So waited a little and tried another same thing except it was now about a 2 inch group. Wait for a little and shot another of the sc load's and right back to where it should be. Now I'm not sure why, but that was my experience with the 2 different powders.
All of the bottles we have are "sc" = short cut. Not "ssc"= super short cut.With a 25/06 and H4831 there was about 150 FPS difference when compared to H4831sc. I was really surprised.