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Post by jmunger on Oct 10, 2021 8:45:50 GMT -5
Purchased a Brux 45 #17 contour with Mesa action from Jeff. I have a 4198 powder but also have a few lbs of 4895, and 4350. Just wondering if anyone had any load data with these 2 powder choices. Thanks
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Post by Kyle on Oct 10, 2021 9:09:33 GMT -5
Assuming a 28” barrel and HIS ignition with the action and barrel you mention:
105gr of H4895 with a 325 Aeromax will be about 3100fps
105gr of H4895 with a 300 Aeromax will be about 3175 maybe a little more
78gr of IMR 4198 with a 275 AccuMax will be about 3005
74gr of IMR 4198 with a 300 Aeromax will be about 2875
73gr of IMR 4198 with a 325 Aeromax will be about 2785
In my opinion H4895 is too slow for 275 grain bullets.
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Post by Richard on Oct 10, 2021 11:45:03 GMT -5
4350 does not fill the bill for what you are shooting. Maybe the 350 grain bullets out of a super long very fat barrel. Its just too slow.
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Post by elkman1310 on Oct 10, 2021 17:14:55 GMT -5
Kyles numbers seem pretty close on velocity every gun is a little different. You really don't need the highest velocity possible. You want the most consistent accuracy load you can work up for your rifle. I have never tested a 350 gr bullet the 300gr and 325gr have shot equally well out to 1,000 yards with several different powders the most consistent accuracy came in below 3,000 fps I will say that again the most accurate loads came in below 3,000 fps. I ran tested up to 3200fps with poor results. I think the most accurate load for velocities above 3,000 fps H4895 with 105grs is the accuracy load with both the 300 and 325gr bullet. I have tested 10X IMR 3031 IMR 4166 H4895 and Varget there are a few others that would probably work as well.
For personal hunting powder I like 10x it is not as temp sensitive or loading pressure sensitive as some of the others. IMR 3031 shot very well but I saw 80fps velocity drops in cold weather the others were much better I know 10x will go off at -15 below with a gun loaded for 3 days so that's why I like using it also IMR 4198 is really hard to beat for a all around powder.
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