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Post by rangeball on Sept 13, 2011 15:31:02 GMT -5
What's the lowest dose of H4198 you think you could use and get reliable ignition with a 300gr sabotless in a .45? What would expect the FPS to be at this minimum level?
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Post by Dave W on Sept 13, 2011 16:14:34 GMT -5
I started out at approximately 48gr IIRC. Neither, the 300 XTP or SST grouped tight until I got up to 53.5gr which is approx. 2300fps depending on temps.
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Post by rangeball on Sept 13, 2011 16:18:56 GMT -5
Thanks Dave. Say someone wanted to shoot a 300gr sabotless from a .45 about 1800 fps. What would be a good temp insensitive powder at what amount?
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Post by Dave W on Sept 13, 2011 16:59:12 GMT -5
5744 possibly but I have no experience with that powder.
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Post by moto357 on Sept 13, 2011 17:51:49 GMT -5
a couple years ago i used some H4227 with a 300xtp sabotless in an SMI i had. with the short breech plug i had no hang fires or misfires, the day i shot this load was single digits and teens. all the range work i did with it that winter seemed fine. i wasn't sure of a max load so i stopped at 28 gr which gave me an avg of 1764fps. hope that helps
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Post by tar12 on Sept 13, 2011 18:12:05 GMT -5
New territory here for sure. My money would be on the AA5744. I have shot 8 lbs of it from 34grns to 45grns. It goes bang everytime in every condition.. Re-7 would be my second choice ONLY because I have not shot it as extensively as 5744. It should be a prime candidate as it is a double based powder as well and you will get more speed with less pressure...
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Post by moto357 on Sept 13, 2011 21:14:48 GMT -5
if yer looking to stay around 1800 i'd have to agree with tar about 5744 being probably your best bet
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Post by tar12 on Sept 13, 2011 22:02:58 GMT -5
I must mention that the 5744 I shot was in the .50 cal. Since 5744 builds pressure fast I would start low and work your way up and use your chrono!
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Post by rangeball on Sept 14, 2011 8:48:29 GMT -5
Thanks fellas  |
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