Frank,
It's a Remington 799 with a 20" bbl and a 1-9.5" twist...or so that's what Remington said the twist is. I'll have to run a patch through it and double check.
I'm not sure how strong the Zastava action it is compared to the others you mentioned but I am having a custom rifle built next spring that will have a FNH/Winchester action.
As for the H110, I don't use it in my subsonics anymore at all. I had nothing but fluctuations in velocty. I strickly use that for my 454 but I simply wanted to see how much would fit under the bullet.
As for bullet stability, I have not had a chance to shoot for accuracy since I tested my subsonics for velocity only. If they don't, I have a few friends who shoot the 7.62x54R that will take them off my hands or trade me.
Now, I did get a responce from Acurate powders about their AA1680:
Quote:
Scott,
We suggest the following.
Caliber: 7.62x39 Russian.
Barrel length: 20-22”
Powder: Accurate – 1680®. (START LOADS ARE -15%)
Bullet weight: 174 grains.
Start Load: 16.2 grains (1575 – 1625 Fps)
Maximum load: 19.0 grains (1800 – 1900 Fps).
Bullet weight: 200 grains.
Start load: 15.0 grains (1425 – 1550 Fps)
Maximum load: 17.5 grains (1625 – 1725 Fps).
NOTES:
It’ important to note that SAFETY is our prime concern therefore we strongly recommend.
1. Caution re A-5744: Take care that double charging does not occur! Especially at low load levels.
2. TO ALWAYS BEGIN LOADING AT THE RECOMMENDED MINIMUM “START” LOAD and develop loads in 2% increments towards the MAXIMUM load.
3. If possible, measure the velocity and correlate with our data.
Regards
Johan Loubser
Ballistician
Ramshot.Accurate Powders
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That sounds like a starting plan to me!! I have NO problem sticking with the STARTING load for either of those suggestions so I'm heading out after this week and getting a pound of AA1680.
thehouseproduct,
thanks for the info. Since I don't cast I couldn't even begin to try your suggestion but I have a MAK-90. Do you have a suppressor or just shoot the subs? My subsonic loads with 6gr of trailboss sound like nothing I have heard in a centerfire cartridge before. It reminds me of a CCI CB...kind of a "POP" instead of a POW. Really fun.
OK gang, thanks all for the input and please, anyone else want to chime in please do so.
Scott