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Discussion Starter #1
Well the 355 gr Beartooth and Win 94 Timber carbine shot as follows.
40gr of Rldr 7 = 1736, 40.5=1747,41=1828,41.5=1862,42=1864,42.5&43=1880 Marshall I am planning on trying a bit more powder. How hot should I go with these 355gr bullets? After I shoot these up I was thinking of trying a 325 gr wfn to get case capacity back and higher velocity with the same meplat. (These are short range bear / moose loads)
.405 Win. M-1895 and Hornady factory loads gave 2225 and 2196 fps. They advertise 2200 so I guess they did alright!
.41 Mag Cor-Bon factory 265gr advertised at 1325 fps and 1033 ftlb surprised me with its performance out of a 6.5" Blackhawk. I got 1403, 1384, 1399, 1376,1357,1366fps! Averaging 50fps FASTER then advertised. 1400 fps is pretty good right?
.375 Win factory(Win 200 gr) was dissapointing, only shot 2136,2076,2126 and 2109 from my M-94 BB.
The .45 Super did not hit its advertised mark from my Springfield V-16 Longslide 1911. It is advertised as 230 gr at 1200 and 185 gr at 1400. My factory loads gave 230gr at 1176, 1154, 1172,1166,1159. 185gr was 1318,1317,1331.1305.
Well what do you guys think? Are these numbers pretty standard? Can i get them hotter? Or is this all the performance I need for hunting? Appropriate game for the caliber of course.
 

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The Hog Whisperer (Administrator)
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The 41 loads sound real impressive! Drop a line to Terry Murbach over at Cor-Bon, I'm sure he will be pleased with the results. Do you know what the B/C gap is on that gun?

Sounds to me like 'average' results in that some were faster and some were slower than advertised. Curious, what's the plan for the .45 Super?
 

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FA18Cub- Without consulting any manuals it appears that you have already passed the peak efficiency loadings with the 355 gr and that powder. If you examine the FPS spreads as your loads were increased you will see that the loads above 41.5 grains gained very little velocity increase for the additional powder. Again, without referring to texts on my part, you appear to have hit the point of diminishing returns and that is usually where pressures start to climb very rapidly. If that is the case you are increasing wear and tear on the rifle and cases and decreasing your margin of safety by attempting to go higher. Now, I could be completely off base here if the manuals suggest you can go substantially higher but I'm assuming you started your loads at a reasonable reduction below an established top load and worked towards that top load. For your consideration. besto.
 

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Discussion Starter #4
I used Marshals loads from his article to workup too these. I think I will shoot these at about this load and order some lighter bullets for a little more velocity from my short barrel.
 

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The 41 Mag load is very impressive. The most I ever got out of the heavy SSK design bullet (300gr) was about 1313 average. Which is pretty good considering that's about all a 44 will do with a jacketed 300.
 

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FA18CUB, as far as 45 Super goes, I have a load I like, using the 230 XTP, Starline 45 Super brass, CCI 300 primers, 13.5gr. AA7, and an OAL of 1.225. I get 1185fps. out of my 5" Springfield. Extremely consistent, and accurate. I have never seen any published load data for the 45 Super so I worked up to this VERY slowly.
 

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Discussion Starter #9
If you want the real load data for the ,45 Super contact acecustom45.com the gentleman who developed the .45 Super runs the shop and he says to use PowerPistol powder only!
 

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FA18CUB,
43 grains of Re7 is about all the fuel I use with Lee430310 @ right around 305 grains ready to shoot (17 to 18 BHN). It's doin' about 2000 fps from my 444P and case head expansion is right around the same as Remington factory 240s.

I suggest trying either H322 or IMR 8208. The latter may still be available on the surplus market... bench rest shooters love this stuff. For bullets over 320 grains the following powders are good: (listed from fastest to slowest) AA2200, surplus WC844, H335, surplus WC846 and surplus AA2230-C. All these powders mentioned have good density to speed ratio for the .444 with bullets over 300 grains when the overall cartridge length is limited to about 2.57" You may also give 2015 a whirl since it's a little slower than Re7.

44
 

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FA18CUB "Cubman"
I was looking at your results with the Winchester 200-grain .375 loads. I have read on other boards of similar results with Winchester .375 200-grain factory ammunition. It does appear that Winchester has reduced the pressure of factory ammunition significantly.
While I have never shot a factory .375 round I have been looking closely at the 200 grain Sierra JFN bullet. My top eject M-99 Big Bore likes this bullet, delivering consistent accuracy with a variety of powders over a pretty wide range of velocities.
Hodgdon's H322 and H4198 have provided the highest velocity and best accuracy within reasonable pressure indications. Hodgdon Benchmark has also delivered consistent accuracy with high velocity and low-pressure indications.
Interestingly, at least for the .375 Winchester, when Hodgdon lists a maximum load, they mean it. For the 200 grain Sierra bullet, Hodgdon lists a maximum load of H322 as 42.0 grains. This load gave Hodgdon 2,419 fps from a 24" barrel at a listed pressure of 46,900 CUP.
I duplicated this load with Winchester .375 brass trimmed to 2.010" and Winchester large rifle primers. Overall loaded length was 2.55". My 20" Big Bore gave an average velocity of 2,277 fps with an extreme spread of 12 fps. Using pressure ring measurements to track the increase from published starting loads to Hodgdons listed maximum gives a reliable indication of where to stop when working with other powders. My rifle expands the pressure ring a full .002" with this load. This is a good indication this is indeed, a full power load.
Hodgdon lists 38.0 grains of H4198 as pushing a 200-grain Sierra bullet 2,480 fps from a 24" barrel with a pressure of 50,600 CUP.
Duplicating this load, my 20" Winchester gave 2,308 fps with an extreme spread of 18 fps. This maximum load expands the pressure ring on my cases .0021". This, is a maximum load.
Working with Hodgdon Benchmark and the 200-grain Sierra has been rewarding. 41.0 grains of Benchmark pushes the 200-grain bullet 2,176-fps from my 20" Big Bore. This load expands the pressure ring .0016" in my rifle. The indications are that this load could be increased. The case is getting pretty full though, so there is not much room remaining to work with. With this load the extreme spread is 30 fps. The extreme spread has dropped steadily from the starting load to this point.
The limited case capacity of the .375 Winchester seems to make it a little better candidate for the short barrel "timber rifle" or "airplane gun" format. With the 200-grain Sierra bullet the limited recoil makes it possible to shoot some very good groups from the bench. While I do not have the requirement that you do for deep penetration I am interested in the heavier bullet weights. As I begin to work with heavier bullets it will be interesting to se if I can control the rifle as well.

Have you tried the Barnes X bullets in your Winchester yet?
 

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Discussion Starter #12
I have not tried Barnes X in anything except a .30-06. I am going to stick with the 1680 in the .375 Win. Marshall and AA's loading manual show this to be a great powder for the .375 Win. I have not been working on these loads for a while. I was using my .405 and a .375 H&H for moose and deer (on Kodiak Isl. - thus the .375 H&H for deer!)
 
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