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To whom it may concern, I received the following load data from Hornady regarding loads for the 405 Winchester. The rifle is a new production M1895 USRAC. Brass: Hornady Primers: WLR Barrel twist: 1:14 COL: 3.085" Bullet: Hornady 300 gr soft point Velocity: 1800 1900 2000 2100 2200 2250 Rel 7 36.4 39.4 42.5 45.5 H322 41.1 43.0 44.9 XMR2015 39.8 42.7 45.6 48.4 51.3 IMR3031 41.2 44.3 47.4 50.6 VIHT N133 43.0 45.4 47.8 50.2 52.6 H4895 44.9 47.3 49.7 52.2 54.6 55.8 Of course it is stated that you must start with the minimum load and slowly work your way up. Casey [ 11-02-2002, 21:40: Message edited by: CASEY ] | ||
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Casey, I would suggest that you follow what Hornady said. I cannot comment on the discrepency between the info that I had given you and what Hornady has provided. Get a chrono and compare their suggested loading data to see if it matches up to the claimed velocity. For your info, I ran the info that I gave you through quickload and it estimated 30968 psi at 2150 fps for the low end and 40153 psi at 2346 psi for the high end using DKT 300 gr bullets. I have found in a .450AK & .45-70 that quickload over-estmates velocity and pressure a little bit in straight walled cases. Please post your results so that we can all learn from it. Thanks, DMC | |||
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DaveC, I wasn't flaming you. I was merely sharing the load data that Hornady provided. If I can "scare up" a chronograph I will chrony the loads and share them. I am not sure when I will have an opportunity to do this, though. Casey | |||
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No offense taken, I'm just a bit surprised. However, I missed one thing, case capacity. Can anyone out there give me the weight for an unprimed .405 case from Bertram & Hornady? Thanks. | |||
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quote:Dave, I have found exactly the same with both those rounds, and the 450 marlin, as well. it seems that ql might have a case capacity issue, like ti did with the 376 steyr. Anyway, i had found it did about 100fps faster, and (guessing here) 7500psi more pressure than we see in the 450ak and 45/70. the marlin was more like 150 fps, but the pressure (guessing) was okay. If I had to choose, though, I would rather it tell me the pressure is higher than it is, rather than lower. Beats the heck outta a 1894 that you can't lever open. jeffe | |||
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Jeffeoso & 577 Robert, You are right, it is better to have it show a higher than actual pressure & velocity than the other way around. I think the issue with a straight case is that QL is designed to include the expansion ratio of the powder in a case that is larger than bore diameter (more powder burning over a longer time period) thereby funneling more gas into the bore. Where as a straight case is basically bore diameter and there is no funneling effect and a smaller expansion ratio. It is apparent that most straight cases are better off with the faster rate powders to compensate for the low expansion ratio of the case and bottle necked cases get more benefit from slower powders due to the higher expansion ratio of the case. I'm not an engineer and am probably not explaining it correctly, but that is the way I see it. | |||
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