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Diamond Curly SASS#57086

Load data for 38/55 black powder 245 bullet

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I have a H&R rifle in 38/55 that I have a load of 30 grains, by volume, under a 245 grain bullet. This load does decent up to 200 yards but is very flat after that.. I tried a few shots at 400 yards and the spotter said it was very flat and very short. Any help would be appreciated. I shot my trap door in 45/70 with a 535 bullet for a few years with good results but my shoulder said no more. The 38/55 is fun to shoot but maybe I am expecting too much out of this caliber. Thanks, DC

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They aren't  barnburners even loaded hot. But, my daughters rifle puts them on a 300 yard target pretty easy. Aim higher! lol. Her load is 10.0 grains of Unique with a 250 grain Lee bullet. If that thing gets there yours will too. Tall quality sights required.

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1 hour ago, Diamond Curly SASS#57086 said:

I have a H&R rifle in 38/55 that I have a load of 30 grains, by volume, under a 245 grain bullet. This load does decent up to 200 yards but is very flat after that.. I tried a few shots at 400 yards and the spotter said it was very flat and very short. Any help would be appreciated. I shot my trap door in 45/70 with a 535 bullet for a few years with good results but my shoulder said no more. The 38/55 is fun to shoot but maybe I am expecting too much out of this caliber. Thanks, DC

 

30 grains by volume is not a full case for a 38-55. Should be around 45-50 grains.  Did you make a typo or are you using a filler?

 

Are you using 2F or 3F?

Edited by Sedalia Dave

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12 minutes ago, Sedalia Dave said:

 

30 grains by volume is not a full case for a 38-55. Should be around 45-50 grains.  Did you make a typo or are you using a filler?

 

Are you using 2F or 3F?

I did hit the wrong powder charge, should read 40 grains of Swiss 2F. The bullets are from Whyte big lube and I just weighed three of them for an average of 245 grains. One did weigh in at 251.Thanks, DC

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1 hour ago, Michigan Slim said:

They aren't  barnburners even loaded hot. But, my daughters rifle puts them on a 300 yard target pretty easy. Aim higher! lol. Her load is 10.0 grains of Unique with a 250 grain Lee bullet. If that thing gets there yours will too. Tall quality sights required.

Thanks, I did aim about a foot high at 400 but still way short. DC

 

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10.0 Unique in my HiWall with 260 grn bullet works well. Wind will have a pretty big effect on the bullet. I’ve shot mine out to 500 meters, but if it’s windy, it’s tough. 

Good sights are a must. If you are shooting a H&R Buffalo Classic you can’t mount a tang sight as no steel tang. While you could mount them on wood, they won’t be as stable. 

 

The 38-55 is a good target load, but has it’s limitations, primarily due to wind.  The heavier the bullet the better, mine can handle a 310. I tried 335 but the would not stabilize. Sounded like a bee going downrange! 

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1 hour ago, Diamond Curly SASS#57086 said:

Thanks, I did aim about a foot high at 400 but still way short. DC

 

To put that in perspective, I aim 30 inches or so high at 400 with my 270. Your lobbing them in. Aim HIGH. 

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Here is the 38-55 ballistics data for a 255 grain soft point. As you can see at 400 yards the drop is 161 inches and change. I ran the numbers for a .375 Winchester shooting a 200 grain Winchester Power-Point at 2199 fps and it drops 78 inches and change at 400 yards.

 

 

Range Drop
(inches)
Velocity Energy Wind drift
(inches)
Time
(milliseconds)
A A A A A
0 -1.4796 1320 986 0.0000 1
50 2.0460 1251 886 0.0000 118
100 0.0143 1189 800 0.0000 241
150 -8.1615 1136 731 0.0000 370
200 -23.0709 1090 673 0.0000 505
250 -45.2883 1051 625 0.0000 645
300 -75.3649 1018 587 0.0000 790
350 -113.8282 988 553 0.0000 939
400 -161.1849 962 524 0.0000 1093
450 -217.9253 938 498 0.0000 1251
500 -284.5285 916 475 0.0000 1413

 

 

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