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Post by artjr338wm on Sept 26, 2014 23:01:42 GMT -5
I have a .50 cal 10-ML-II and wish to develop a accurate hunting load using Harvester BLK/CRsabots with my newest bullet the .458"/250 Monoflex by hornady and H-4198.
I wish to try H-4198 as that powder gave
excellent results in the past with bullets weighing 245-250 grains. I also wish to try single powder loads first.
What I would like is a series of charge weights of H-4198 that based on the collective passed experiences of members here that some where with in that series will be the charge we
ight of H-4198 that willmost likely to allow me to find my best performing load with this bullet and powder combination.
Thanks,
Arthur
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Post by muzzleman 54 on Sept 27, 2014 13:28:35 GMT -5
hi Arthur. you can start out at 62 grs. and work up to 67 grs. of H-4198 with 250 gr. bullets. you will get around 2,400 FPS. the recoil is more than with book powders. the good thing is the pressure is much lower than say 5744 or n- 110. I use a load of 65 grs. of H-4198 for deer hunting in my 50 cal. savage. at 100 yards it groups into 1". lou.
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Post by bloodtrailer on Sept 29, 2014 16:50:02 GMT -5
well 43 grns sr4759 gave very good groups with 250 xtps .45(never tried H4198 with 250s only 300s)  |
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Post by artjr338wm on Sept 29, 2014 18:34:32 GMT -5
Thanks to all who replied. Have shot a good deal (5 or 6lbs) of H-4198, but it's getting scarce, so I was looking to try to keep powder use during load development to a bear minimum. Will begin with 68 grains and stop at best accuracy or 70 grains which ever occurs first. I doubt I will have time before Indiana's gun season which is realistically a few weeks away, to do much more than that. I don't think it a good idea to be two weeks from seasons open and still messing about with load development.
After gun season and between ML season I will try loadings from 72-75 grains of H-4198 as I have enough experience to know Harvester sabots in temps below 45* will handle up to 78 grains of H-4198 quite well.
Again thanks to all.
Arthur.
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Post by sampotter on Dec 1, 2015 17:39:44 GMT -5
Arthur- what were your results? I was just out shooting this exact combo of .458 250gr Monoflex and H4198. I used 73gr of powder and was hovering right at 2500fps. I shot a 1.5" group at 100 yards in a 20-40mph crosswind and when I went out to 200 yards I put the crosshairs right the top of the box thinking I would try to figure out the trajectory. Well, I never touched the box and with the wind and rain starting I decided to quit. I'm now wondering if the bullet was still rising? (I was zeroed at 100)
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Post by Deleted on Dec 1, 2015 18:08:07 GMT -5
Arthur- what were your results? I was just out shooting this exact combo of .458 250gr Monoflex and H4198. I used 73gr of powder and was hovering right at 2500fps. I shot a 1.5" group at 100 yards in a 20-40mph crosswind and when I went out to 200 yards I put the crosshairs right the top of the box thinking I would try to figure out the trajectory. Well, I never touched the box and with the wind and rain starting I decided to quit. I'm now wondering if the bullet was still rising? (I was zeroed at 100) With that kind of wind and low bc of the bullet you could of had 15-20" of wind drift at 200 yards. With a 20mph wind drift will be 16" @ 200 yards. I love that bullet however it does terrible in high winds, it is a calm wind day bullet. |
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Post by sampotter on Dec 1, 2015 18:31:08 GMT -5
Arthur- what were your results? I was just out shooting this exact combo of .458 250gr Monoflex and H4198. I used 73gr of powder and was hovering right at 2500fps. I shot a 1.5" group at 100 yards in a 20-40mph crosswind and when I went out to 200 yards I put the crosshairs right the top of the box thinking I would try to figure out the trajectory. Well, I never touched the box and with the wind and rain starting I decided to quit. I'm now wondering if the bullet was still rising? (I was zeroed at 100) With that kind of wind and low bc of the bullet you could of had 15-20" of wind drift at 200 yards. With a 20mph wind drift will be 16" @ 200 yards. I love that bullet however it does terrible in high winds, it is a calm wind day bullet. Thank you for the response. Well, that would explain it... today wasn't an ideal day to be shooting, but it was the day that I had available. Any idea of how much drop this bullet would have @ 200 yards if leaving the barrel @ 2500 fps? Also, what would be the ideal speed for this bullet to perform the best? (I assume 2300-2500 because the Hornady website implied it was designed for the 45-70 govt.) |
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Post by Deleted on Dec 1, 2015 18:40:23 GMT -5
Arthur, I was shooting 68 gr. IMR 4198, bcr. and the 250 .458 monoflex right at an inch at 100 yds. I fully intended to use it for early muzzleloader and then shotgun if it held up to the temp. drop. This was only one outing but I don't recall a load that wanted to shoot like that did. I loaded the last shot at 69gr. and shot my solid aluminum ramrod with a spinjag. So needless to say it is a .45 now. I would think you are going to be very happy with the way it shoots with about 70 gr. of H 4198. If this is the same gun you were shooting a few years ago, I always had similar results with mine with some 10x loads you were developing so I always figured the two guns shot pretty similar. Hope this saves you some time.
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Post by Deleted on Dec 1, 2015 19:44:02 GMT -5
I shoot this bullet at 2850 with no issues. @ 2550  |
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Post by sampotter on Dec 2, 2015 8:16:59 GMT -5
I shoot this bullet at 2850 with no issues. @ 2550
I'm a bit of a greenhorn when it comes to the technical side of this stuff, but if I am reading this correctly, there was 5.87" of drop and 16.22" of drift @200 yards with a 20mph crosswind?
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Post by Deleted on Dec 2, 2015 8:25:46 GMT -5
Yes you read it correctly
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Post by sampotter on Dec 2, 2015 9:11:23 GMT -5
You weren't kidding when you said the bullet really drifts in the wind...
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Post by Deleted on Dec 2, 2015 9:36:13 GMT -5
You weren't kidding when you said the bullet really drifts in the wind... Like I've said before I love the Hornady bullets but for long range you need calm winds to be comfortable shooting that far. If your trying to buck the wind better I'd go for either the match hunter or Luke's 310 bullet for better BC. I've shot past 200 yard with the 250 SST with high winds and groups would be all over the place. Very frustrating however you need to remind yourself that the bullet really wasn't designed to shoot that far. |
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Post by sampotter on Dec 8, 2015 13:59:44 GMT -5
I shot a doe in Ohio with the 250gr .458 Monoflex, Black CR Harvester, and 73gr of H4198. 1st shot was ~30 yards slightly quartering to and I hit 1 lung/liver (my fault, rushed shot). Follow up was ~150 yards through a little brush as she was climbing a very steep hillside. Bullet entered just under the loin behind the last rib and exited through the opposite armpit, taking out all the important stuff in the process. Neither bullet recovered, but entry holes were bore sized and exits were a little over an inch, which to me indicates good expansion and non-fragmentation. More pleased with the bullet performance than my shooting.
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Post by oldsnow on Dec 8, 2015 16:33:36 GMT -5
Here is Mono Flex that I took from a doe that I shot at 150 yds. It entered between her right shoulder and neck and come to rest just under the skin of her left hind quarter. 50 cal. Savage M/L II 42 grs. IMR 4759, Harvester black C/R, CCI Mag. primer.  |
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Post by sampotter on Dec 9, 2015 12:47:08 GMT -5
Here is Mono Flex that I took from a doe that I shot at 150 yds. It entered between her right shoulder and neck and come to rest just under the skin of her left hind quarter. 50 cal. Savage M/L II 42 grs. IMR 4759, Harvester black C/R, CCI Mag. primer. Yup, it was this picture posted in a different thread that got me excited and that is the approximate diameter of the exit holes I observed. I forget, did you weigh this bullet? It couldn't have lost much... |
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Post by ateam on Dec 9, 2015 13:17:26 GMT -5
I shot a doe in Ohio with the 250gr .458 Monoflex, Black CR Harvester, and 73gr of H4198. 1st shot was ~30 yards slightly quartering to and I hit 1 lung/liver (my fault, rushed shot). Follow up was ~150 yards through a little brush as she was climbing a very steep hillside. Bullet entered just under the loin behind the last rib and exited through the opposite armpit, taking out all the important stuff in the process. Neither bullet recovered, but entry holes were bore sized and exits were a little over an inch, which to me indicates good expansion and non-fragmentation. More pleased with the bullet performance than my shooting. Thats a lot of 4198, any idea what velocity you are getting? |
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Post by sampotter on Dec 9, 2015 15:53:34 GMT -5
Low 2500s
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Post by ateam on Dec 9, 2015 19:58:22 GMT -5
Interesting. I looked in the loads section after I made the above comment, and it appears you can go up to 75 grains 4198 with a 250g bullet which will get you something like 2800 fps, stomp.
I shot a few monoflex before the season opened here and had bad flyer issues, though i dont think I shot any loads that heavy.
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Post by oldsnow on Dec 9, 2015 21:39:31 GMT -5
I forget, did you weigh this bullet? It couldn't have lost much... Yes, I did weigh it. it is 242 Grs. |
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Post by sampotter on Dec 10, 2015 12:44:44 GMT -5
Interesting. I looked in the loads section after I made the above comment, and it appears you can go up to 75 grains 4198 with a 250g bullet which will get you something like 2800 fps, stomp. I shot a few monoflex before the season opened here and had bad flyer issues, though i dont think I shot any loads that heavy.
I think I saw that somewhere too, but I believe that was sabotless in a .45 barrel. I tried 75gr and got mid 2500s with my setup. I'm guessing I could get more velocity with a duplex load but I've found it difficult to find any of the suggested powders in stock.
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Post by sampotter on Dec 10, 2015 12:45:23 GMT -5
I forget, did you weigh this bullet? It couldn't have lost much... Yes, I did weigh it. it is 242 Grs. It doesn't get much better than that! Are you still hunting with them? |
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Post by oldsnow on Dec 10, 2015 21:52:03 GMT -5
It doesn't get much better than that! Are you still hunting with them? [/quote] Yes, but this is the only one that I ever found. |
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Post by ibenhunting1 on Dec 29, 2015 23:03:11 GMT -5
I'm new to the form,but have been using the 250 grain Monflex bullet in my SMI barrel for several years. This bullet proforms very well between 62- 67 grains of H4198. I have shot this bullet up to 70 grains of H4198,but I don't like the beating it gives me.
Another good powder to try is Reloader 7. I would start 65 grains and work up to 70 grains.
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