300BlkTalk

I am interested in too. MidwayUSA Shooting Supplies is the only one I may find cheap bullets. Any other places?

I tried 10.1gr of A1680 on 147gr M80 bullets. In my AR-300BLK, it did not cycle. The sound was much lower than supersonic rounds.

I read that >210gr bullets will cycle in 300BLK.

I use the following Bench top cut-off saw for brass cutting.

http://www.harborfreight.com/power-tool ... 42307.html

and then, trim the cases by
Hornady spindle trimmer.

I had a chance of shooting my load.
Hornady Soft point 150gr bullet.
23gr A1680.
OAL=2.14 inch
1.5-4.5x scope used.

5 shot group is 1.5~2 inch at 100 yds. This is better than my Ar-15 and AK-47.

Sonic speed, 1126 feet/sec may vary depend upon temp, humidity, height, etc.

I was busy to make my own recipes of A1680. I shot many but I didn't measure accurately.

In this weekend I will show my groups. But I can tell you this. At 100 yds, the supersonic 147gr M80 bullets from my 300BLK Model1 make better groups than my AR-15 223 and AK-47.

Model1 sales has a reasonably priced 300BLK upper.
The figure is what I bought from them. light, accurate, and very satisfied.

http://www.model1sales.com/index.cfm?fu ... ory_id=656

Model1 300BLK AR-15 carbine rifle 1:8 twist 16" bbl. A1680 powder 24.0gr (compressed) 147gr M80 bullets, 150gr Hornady Soft Point, and 110gr Hornady V-max bullets Wolf small rifle primers OAL 2.24 inch~2.14 inch Today I tested the rounds without any pressure sign. I think this is the max. load ...

I am 100% sure about my numbers. 24.0gr of A1680 with 147 M80 bullet without any pressure sign. Of course I read the reloading tables and also I read the following data from 7.62x40wt. 110 gr. Hornady V-Max 26 gr. Accurate 1680 (16" or longer bbls) Lake City Formed Case Remington 7 1/2 2.175&qu...

I increased A1680 powder to almost maximum. If you fill a case to maximum, 24.5gr A1680 is possible. Some powder will spill from the case and make a table dirty. I dropped 24.0gr of A1680 on a case and compressed it with 147gr M80 bullet to make OAL of 2.24 inch. Today I tested the rounds without an...