.300 Blk-out Subs

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.300 Blk-out Subs

Post by Nicnac on Sat Jan 25, 2014 3:40 pm

Anyone running sub-sonics in their .300 blk-out ?

I picked up some 150gr and found some 220gr round nose bullets to try. Would love to have some 200's but haven't been able to find any locally.



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Re: .300 Blk-out Subs

Post by Nicnac on Sat Feb 01, 2014 1:57 pm

Bump.

Got some 220's loaded and will try to make it to the range soon.

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Re: .300 Blk-out Subs

Post by Nicnac on Mon Feb 03, 2014 8:43 pm

I made it to the range. I used 4227 for powder and got my sub-sonic's at about 10.6gr of powder. There was a bit of a cycling problem, I may have to seat the bullets a bit deeper to allow them to be extracted out of the magazine a bit easier. Or go with a softer spring.
Do you guys know which spring would allow me to go a bit softer/easier to recoil?
Not sure which I have know, have to dig into my receipts......
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Re: .300 Blk-out Subs

Post by Nicnac on Wed Feb 05, 2014 11:59 pm

I believe the gas system is fine, I'm also running a can on the front of a 16" barrel. So with a can on it, it has additional back pressure.
I think I may need a lighter spring, so that it will cycle easier. But with that said, when I go back to full house loads of 25grs of 1680 will it cycle to hard (is this bad)?  May just have to load a few of everything and give it a try.

This is actually my 7.62x40 Wilson Tactical gun but it is almost Identical to the 300blk except that the case is a bit longer to allow more powder in it.
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