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Post by landshark on Dec 21, 2021 19:32:22 GMT -5
Jeff is building a 40 cal Brux barrel ( 24” long) for a light weight rifle. I would like any input on powders for 225 to 250 grain bullets. I have H4198, IMR4198, H322, IMR3031, Benchrest and Varget powders. Not looking for extreme velocities, just an accurate lightweight hunting rifle. Thanks
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Post by buckeye68 on Dec 21, 2021 20:08:41 GMT -5
May want to move it to the 40 cal section.
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Post by buckstuds on Dec 29, 2021 18:41:20 GMT -5
If you don't have a powder chamber, 4198 works great with 225 or 250. I will try and find my data for this.
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Post by thumbhole on Dec 29, 2021 20:29:34 GMT -5
I would think Jeff should have load data for a gun that he builds?
I had a light weight 40 cal rifle built years ago and here is the load info the builder sent me.
" I finally got a chance to run some numbers for you, good luck and please use a chrony and verify. Let me know if I can be any help along the way!"
200gr bullet
80Gr IMR3031 46kpsi ~3060fps
85gr IMR3031 51kpsi ~3125fps
76gr H4895 47kpsi ~2950fps
80gr H4895 51kpsi ~3040fps
82gr varget 45kpsi ~2926fps
89gr varget 50kpsi ~3055fps
240gr bullets
70gr IMR3031 46kpsi ~2750fps
76gr IMR3031 51kpsi ~2875fps
66gr H4895 46kpsi ~2650fps
70gr H4895 50kpsi ~2740fps
73gr varget 45kpsi ~2660fps
80gr varget 50kpsi ~2800fps
This was using the Hornady SST and Cutting Edge 240 Gr.
after playing with different bullets I went with H-4895 and the 253 gr. Pittman/Hammer and the Pittman 250 gr AccuMax
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Post by buckstuds on Dec 30, 2021 8:04:22 GMT -5
From my notes, 48.5 gr of 4198 with a 225 gr bullet at 2500 fps. Very nice load and accurate at 100 yds. Mild recoil. That was with 209 ignition. 1 inch straight barrel omega build.
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Post by sew on Dec 30, 2021 15:03:59 GMT -5
If you are going to have a powder chamber, don’t go over 50 grains in size. H4198 will likely be optimized at below 60gs. H322 will likely be best at 60-70g, with 225 -250g bullets. With sized 225/228 AccuMaxes I’m shooting 228 AMs with 62g H322, DI, 2770’/sec. I’ll likely go up some on the powder load.
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Post by landshark on Jan 3, 2022 16:22:29 GMT -5
Thanks for all the info guys
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