June 18, 2012, 09:06 AM | #1 |
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.30 Carbine Light Load
Have a bunch of Berry's 110gr Plated bullets coming. But want to do something diff. I will be shooting them from a GI IBM carbine but want to light load them to approx. 900 to 1100 fps and "not" function the slide. In other words want it work like a straight pull bolt action. Anyone have any tips on loads, prefer to use Unique, 2400 or Bullseye powders. Thanks
Just a note I remember owning a Universal carbine in the 70's that had a reversable piston that would do this very thing by blocking the gas port. The only thing about the Universal that was good |
June 19, 2012, 07:31 AM | #2 |
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The dimensions are pretty close to the 32 H&R Mag. Maybe you could use data for that to get in the ball park?
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June 19, 2012, 05:26 PM | #3 |
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Actually much closer is 327 Magnum.
Edit to add, Unique will be your best bet as it won't produce the proper gas volume to cycle the action. I don't think 2400 will download well enough for the velocities you are looking for without getting one stuck in the barrel. Lymans 49 lists a start load of 5.5 gr. Unique with their #311359 115 gr. lead bullet as a start load for 1388 fps @ 27,600 CUP. on Page 212. Last edited by SHR970; June 19, 2012 at 05:33 PM. |
June 19, 2012, 05:42 PM | #4 |
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8.0 grains of Herco would do it, but that's not a light load! 7.5 grains of Unique would be about equivalent -- so try about 6.5 grains of Unique and work your way *down*.
You're going to have trouble getting the velocity down to 1000. It's an efficient little cartridge.
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June 20, 2012, 08:56 PM | #5 |
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All of my 30 Carbine loads get fired in my Ruger Blackhawk. So we are talking significantly different barrel lengths, but I found the following load data very helpful to me. When I start my loads I actually use QuickLoad to calculate pressure/velocities for my loads. But the attached document shows just how versatile the 30 Carbine can be loaded.
I strongly encourage you to check multiple sources before you select your load, but good luck in finding much load data on plated bullets in the velocity range you are seeking. There are a few older loading manuals that do actually list loading data specifically for the Blackhawk. |
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