Data needed: 300 BLK 130gr cast GC

[three50seven]

I ordered some bullets from gtbullets.com to try out in my Ruger American .300 BLK. They are a 130gr gas-checked HP. Does anyone have a source for .300 BLK data for cast bullets in this range? Looking for supersonic, not sub. I have been loading the 125gr Hornady SST over a max charge of H110 or Lil'Gun with good results, so I'm thinking a lesser charge of either of those would be a good place to start.

Here's the link if anyone's interested:
http://www.gtbullets.com/index.php?m...products_id=70

[jimb16]

Personally, I'd start with M1 carbine data for the Lyman 130 gr. plain base bullet and work up from there. Powder capacity is similar and the bullet weight is the same. M1 carbine is rated at 40,000 psi so you shouldn't go over pressure even with the max loads.

[popper]

Start load data for 135gr, work up from there. Hornady load data for H110.

[Grmps]

Here is my quest might be some info there that will help
http://castboolits.gunloads.com/show...Subsonic-Loads

I also/ you can email
Ramshot Customer Service <customerservice@ramshot.com>

From: Ramshot Customer Service [mailto:customerservice@ramshot.com]
Sent: Monday, October 23, 2017 3:13 PM
To: Jim
Subject: RE: Accurate Powder: Contact Us - General

Jim,
Sorry but you will not get subsonic data for 170gr, 180gr and 200gr bullets. The minimum amount of powder needed will still produce sonic velocities.

300 AAC BLACKOUT (Subsonic Loads)
Barrel: 16" ¦ Twist: 1-10" ¦ Primer: WIN WSR ¦ Bullet Diameter: 0.308"
Case: REM ¦ Max Case Length: 1.368" ¦ Trim Length: 1.358"
Accurate 1680

Bullet weight: 230 grains.
Start load: 9.9 grains (ca 975 Fps). = Subsonic
Maximum load: 11.0 grains (ca 1100 Fps) = Subsonic




Don W.
CSR



406-234-0422

www.westernpowders.com
www.ramshot.com
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Use the data and advice at your own risk, and with extreme caution.
IMPORTANT NOTE: Always begin loading from the minimum "START charge and carefully develop loads by increasing in small increments of 2% towards the Maximum load.
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From: No-Reply [mailto:no-reply@webgrain.net]
Sent: Monday, October 23, 2017 4:03 PM
To: Ramshot Customer Service <customerservice@ramshot.com>
Subject: Accurate Powder: Contact Us - General

From: Jim
Subject: Accurate Powder: Contact Us - General
Question Type: General
Question Type: ACCURATE 1680 for cast
Looking for load data for ACCURATE 1680 –
used with 300 AAC Blackout Subsonic CAST Ammo 170 grn, 180grn, 200 grn, 230 grn
Thankyou
Jim

[three50seven]

Thanks all, that gives me some place to start anyway. I plan to use H110, so we'll see how it goes!

[popper]

http://www.hodgdonreloading.com/data/rifle All the data you need.

[three50seven]

Hodgdon is usually the first place I look, but I haven't been able to get the site to load properly the last few times I've been on there...anyone else having that problem?