#1
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20 Practical and N133
Shooting 23 gr N-133 with a 40 gr. Vmax for an average of 3550 fps. Barrel is 28" finished. Is there a different powder I could possibly try to wring out some more speed? I know, I know...How much more do I need? Just thought I would be quite a bit faster. Maybe I placed to much faith on Internet posting about velocity.
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My high school baseball coach told me, 'life is not a bowl of cherries'...Boy was he right!! Vietnam Vet 66-67 |
#2
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20 Practical and N133
You might want to work up to around 22 grains of H4198 and the 32 grain bullet into the neighborhood of 3700-3800. But start around 21 grains and work up, SLOW. Check the Hodgdon Data site under the 20 Tac load for start, etc. Bill K
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#3
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Why did you stop at 23g?
At 28" barrel I'd expect N133 39g-40g and 3700 fps to be in the 24.5g area give or take a few tenths. Last edited by GrocMax; 09-10-2017 at 11:34 AM. |
#4
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Try H 4895. All you can stuff in there should get something over 3800fps
and still be well under 55,000 psi. Why shoot little bullets with the larger case? Try 39gr Sierra or any of the 40s. Some 40's will not do well with a 12 twist but the 39's will shoot. Take advantage of the .275 to .287 BC. I think the H4895 is better than the H4198 ever since the day I dumped and reloaded 300 cases in the desert one afternoon. Well under Max also. Kenny Same speed H4198 5000 psi higher. Don't think the 39's and 40's are the same. The 39's being 2-1/2% lighter transforms into more than 1/2 gr of powder.Kenny I god only made one powder, I wish it to be H4895. If there were 2, add bullseye. I could load everything I have.
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sicero I pride myself in being able to make decisions with little information. |
#5
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Quote:
Jim |
#6
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Of the powders discussed I'd order them N133, H322, Hodgdon Benchmark, 8208XBR, H4895 faster to slower. BM and 8208 are pretty close together. Try what you have they all work.
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