Recent content by SplittingHairs
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Optimal Barrel Time (OBT) vs Optimal Charge Weight (OCW)
I forgot to state that both the 308 & 6.5 CM data is being shot from 24" long barrels. As shown on the sample data, not all of the OBT are aligned to the natural barrel frequencies. I started searching for accurate loads by reading and then loading load ladders. I found this to use up a great...- SplittingHairs
- Post #10
- Forum: Reloading Depot
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Any data from 6.5 CM Starline (small primer) vs Lapua 6.5 Brass?
The volumes (water weight) were of virgin unfired brass for both. I will update the volumes when I get out to the range with my RPR.- SplittingHairs
- Post #4
- Forum: Reloading Depot
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Any data from 6.5 CM Starline (small primer) vs Lapua 6.5 Brass?
I have purchased a small quantity of both Lapua and Starline brass for my 6.5 CM RPR. The volume I measured for each case is as follows: Lapua ( 51.5 gr of H2O ), Starline ( 50.6 gr of H2O ). I have only fired a few dozen rounds of reloads so far in the RPR. Anyone have any range reports for...- SplittingHairs
- Thread
- Replies: 13
- Forum: Reloading Depot
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Optimal Barrel Time (OBT) vs Optimal Charge Weight (OCW)
Here is a sample of the data I have collected- SplittingHairs
- Post #6
- Forum: Reloading Depot
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Optimal Barrel Time (OBT) vs Optimal Charge Weight (OCW)
I appreciate each of your responses. I have a excel file with each load I have reloaded and chronograph data for the days I took that equipment to the range. I reload for 25-06, 308 Win, 5.56 Nato, 300 Blackout, 6.5 Creedmoor, 458 SoCom, 12 GA shotgun and 9mm, 45 ACP, 40 S&W, 357 Magnum. It...- SplittingHairs
- Post #5
- Forum: Reloading Depot
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Optimal Barrel Time (OBT) vs Optimal Charge Weight (OCW)
I was wondering if anyone has used Quickload OBT and compared this with OCW to see how if they result in similar load data. I have shot my most accurate / smallest groups using OBT.- SplittingHairs
- Thread
- Replies: 19
- Forum: Reloading Depot
