8.75 gr of Lil Gun, 225 gr BTHP, 2.110" OAL, doesn't lock open, about 1050 average fps but SDs of 20-30 depending on when tested thru a 10.5" pistol barrel with a .09 gas port and the adjustable gas block fully opened.
The Lil gun loads are MUCH quieter than the 1680 loads. the 1680 loads function fine. I need to try a different powder with more gas.
Lil gun subsonic with 225 gr Hrndy BTHP, mixed results
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Lil gun subsonic with 225 gr Hrndy BTHP, mixed results
Last edited by Ben B. on Mon Jan 21, 2013 2:22 am, edited 1 time in total.
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Re: Lil gun subsonic with 225 gr Hrndy BTHP, unsatisfying
Have you played with seating depth at all?
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Re: Lil gun subsonic with 225 gr Hrndy BTHP, unsatisfying
GI mag or Pmag?Ben B. wrote:8.75 gr of Lil Gun, 225 gr BTHP, 2.110" OAL, doesn't lock open, about 1050 average fps but SDs of 20-30 depending on when tested thru a 10.5" pistol barrel with a .09 gas port and the adjustable gas block fully opened.
The Lil gun loads are MUCH quieter than the 1680 loads. the 1680 loads function fine. I need to try a different powder with more gas.
So it did cycle the ammo?
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Post complete and accurate info when inquiring about loads, or be ignored.
Post complete and accurate info when inquiring about loads, or be ignored.
Re: Lil gun subsonic with 225 gr Hrndy BTHP, unsatisfying
Yes, started at 2.190", with several stops before 2.110". I'm assuming smaller OAL means more complete burn and more gas available to work the action.
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Re: Lil gun subsonic with 225 gr Hrndy BTHP, unsatisfying
I'm thinking 4277 will be next attempt.
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Re: Lil gun subsonic with 225 gr Hrndy BTHP, unsatisfying
It mostly cycles the ammo 90% or so, and have used GI & PMAG.Maryland_Shooter wrote:GI mag or Pmag?Ben B. wrote:8.75 gr of Lil Gun, 225 gr BTHP, 2.110" OAL, doesn't lock open, about 1050 average fps but SDs of 20-30 depending on when tested thru a 10.5" pistol barrel with a .09 gas port and the adjustable gas block fully opened.
The Lil gun loads are MUCH quieter than the 1680 loads. the 1680 loads function fine. I need to try a different powder with more gas.
So it did cycle the ammo?
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Re: Lil gun subsonic with 225 gr Hrndy BTHP, unsatisfying
300 BLK is really touchy with COAL; I have the last of my Hornady 225 BTHP loaded with 8.5g of Lil'Gun.
I'll run with a GI Mag and report my findings.
I'll run with a GI Mag and report my findings.
When I go to bed a law abiding citizen and wake a felon, by the stroke of the legislative pen, tyranny has arrived.
Post complete and accurate info when inquiring about loads, or be ignored.
Post complete and accurate info when inquiring about loads, or be ignored.
Re: Lil gun subsonic with 225 gr Hrndy BTHP, unsatisfying
I decided, "What the hell, I'll load up 10 rds with 8.5 gr Lil Gun at 2.110 OAL and see what happens". They all cycled, and locked the mag back 2/2 times. The 2nd time, the bolt was not fully back, but did lock. No sonic crack.Maryland_Shooter wrote:300 BLK is really touchy with COAL; I have the last of my Hornady 225 BTHP loaded with 8.5g of Lil'Gun.
I'll run with a GI Mag and report my findings.
So 8.75 gr was not locking the bolt on an empty mag, but 8.5 was. Hmm. Don't know what to make of that. I'll load some more at 8.5 gr & chrono.
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