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Gettin' antsy for spring and warmer weather.... load experimentation


BrianK

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33 minutes ago, BrianK said:

It's not a new to me idea. The military has been using it in tanks for quite some time. I think they call them discarding sabots. The Thunderbolt ground support aircraft may also use them. I used it, as do many others, with shooting black powder.

The twist rate of the 300BLK was lost on me with all the other factors I was considering, but yes, it might mean a cleaner separation. I'm pretty sure my barrel has a 1:8 twist. In the end it'll either work or it won't. If I had a ballistics lab I'd be able to spend the $ and figure out what works best, but what I have is what I have and it'll either work or it won't. There's very little I can do to help it to work.

I nearly forgot. That's the story I get from everyone re: the Rem' accelerators. So I guess my 3" groups weren't all that bad. It just wasn't what I was looking for. After that experiment I bought a .17 Remington and throttled the velocity down to 4060fps from 4200+. The bullets were coming apart in the air.

Another thing that your experiment with the sabots from a 300blk may allow using 80gr+ longer high BC bullets loaded to AR magazine length since the cases shoulders are pushed back like they are. Should be a similar situation to how Hornady evolved the 6ARC off the 6.5 Grendel case to load longer high BC bullets. 

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The sabots really require flat bottom bullets from what I recall of the way they're molded. High BC bullets would have a boattail and would have huge runout. Maybe it could be done, but I wouldn't know how to do it in a reasonable manner. In the past I found velocity to be almost magical so my thrust is toward that. But I need to find out if they will do the basics of feeding and function reliably. If that doesn't happen it's a failure. One small step at a time. This isn't going to happen rapidly. It'll be at least 1 1/2 months before I even start to think of getting my range melted and usable.

. One thing at a time. I don't want to get ahead of myself. First they need the basics, to feed and function reliably. If they don't do that it's not going anywhere.

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