Sefuller5741
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I have some new CKB cast coated 95gr LRN bullets that I'd like to load in .380 using VVN320 but I can't find any load data for this bullet or anything similar. Anyone have a recipe?
.380 with N320
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Seymour380
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I have never used N320, but this Loadbooks page might help. Good luck!
Sefuller5741
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Thank you - I have similar data but not sure exactly how to adapt the recipes for those bullets to the 95gr LRN.
AgPilot
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Pull up VV website. I have been messing around with the N330 and N340 with 380, 9mm and 38. Limited recipes but I do see some info on 380 and the N320. I can’t figure out how to share the site to You on here.
Sefuller5741
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Here is the 95gr data from the VV app. As far as I can see they have no lead bullet data in any weight. I'm not sure how to convert the data they do give to my bullet.
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Sefuller5741
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I've been looking forward to trying this powder but guess I will have to use it in my .45 loads and stick with another powder for the .380.
AgPilot
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I once had a Buddy tell Me a 95 gr bullet is a 95gr Bullet.
AgPilot
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Let Me know what You are loading up in the 45. I’m fixing to start loading some up very soon for the new pistol trying several powders.
Seymour380
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I have had reasonable results with lead bullets using FMJ 380 data if I reduce the maximum load by 10% and work my test loads upwards in increments of 0.2 to 0.3 grains. I make 5 test rounds per test load.
Lyman has been my best source for lead bullet data, but I could find no Lyman data for the 95 gr. lead bullet and N320.
WeekendReloader
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Isn't the 95gr Speer TMJ basically a plated lead round nose bullet? Start with that data.
Sefuller5741
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I am still relatively new at this but my understanding is that jacketed and coated are treated differently. Is that not true of plated as well?
WeekendReloader
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Terms:
Jacketed = thick copper shell filled with lead.
Plated = Lead bullet that is electroplated with a thin coating of copper
Coated = HiTek or powder coated or polymer coated.
Lead = Lead.
Many companies use different terms and letter combinations to describe their bullets. I believe Sierra uses TMJ (total metal jacket) to describe their plated bullets. Typically you can use the basic Lead bullet data for plated and coated bullets. Jacketed bullets use different data, mostly because they can be pushed faster without fouling the barrel.
Jacketed = thick copper shell filled with lead.
Plated = Lead bullet that is electroplated with a thin coating of copper
Coated = HiTek or powder coated or polymer coated.
Lead = Lead.
Many companies use different terms and letter combinations to describe their bullets. I believe Sierra uses TMJ (total metal jacket) to describe their plated bullets. Typically you can use the basic Lead bullet data for plated and coated bullets. Jacketed bullets use different data, mostly because they can be pushed faster without fouling the barrel.
Zendude
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The starting load should be similar, as it has to cycle the slide regardless of bullet construction.
GooseGestapo
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Hard cast is typically treated differently than swaged bullets due to hardness, Data for soft lead bullets will be restricted to prevent leading at higher velocities.
I harken back to days when data was limited. Often magazine articles were the only source for data.
If lead bullets are no more than .002” oversized and weighs the same, data for a jacketed bullet can be used. Pressure will be slightly higher with the lead bullet (better bore seal) and velocities higher due to lower bore friction and lower engraving force.
The old recommendation to start 10% low is still a good one.
I harken back to days when data was limited. Often magazine articles were the only source for data.
If lead bullets are no more than .002” oversized and weighs the same, data for a jacketed bullet can be used. Pressure will be slightly higher with the lead bullet (better bore seal) and velocities higher due to lower bore friction and lower engraving force.
The old recommendation to start 10% low is still a good one.
GeoDudeFlorida
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Yup. That's why Ideal/Lyman's manuals always specified; e.g. jacketed, cast, Linotype or Alloy #2. I've seen in the old Ideal manuals "cast" or "soft cast" (8-12BHN, probably?) specified with different powder combinations. I think the idea of those older manuals was, you knew if you added anything to your casting lead to make it soft or hard, or if you water-dropped them to harden them, and which powder you ought not to use. The later Lyman's almost always say Alloy #2 (~16BHN), which is pretty hard stuff, or Lintoype (~22BHN), which is between "cast" and jacketed - copper jackets are nominal 35BHN, depending on manufacturer. I don't really recall ever seeing an older Lyman's manual or one of the Ideal manuals specify "swaged" (8-10BHN), which is the same as "cast" or "soft cast" but Hornady does in their manuals. Then again, I've only got three old Ideal manuals and have only seen a couple more so, I may have missed it.
Bottom line, the data is different because too-hard bullets won't expand to fit the bore (obturate) and that can lead to leading while too soft bullets will obturate but excess pressures can melt or blow past the skirt (obturation) and that causes leading. Jackets can separate, hollow bases can blow through the tops, all kinds of thing can go wrong with bullets when things don't line up.
I made a similar post with this powder 230 gn 45ACP using N320. I have not yet found my load but there is some data there
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