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Forum: Other Subsonic Topics 04-23-2007, 07:09 AM
Replies: 21
Views: 5,663
Posted By jope
It would be great if you could find out what they...

It would be great if you could find out what they know off about the twist needed for stabilizing the heavy subsonic 50bmg projectiles.

Anybody know what the minimum barrel thickness should be for...
Forum: Other Subsonic Topics 04-21-2007, 03:00 PM
Replies: 21
Views: 5,663
Posted By jope
Hello! Have you had success calculating the...

Hello!

Have you had success calculating the twist?

Is there something bad if a choose a twist too tight? Im thinking the 1 in 7.5 from border barrels.

- Jope
Forum: Other Subsonic Topics 04-18-2007, 06:17 AM
Replies: 21
Views: 5,663
Posted By jope
Got a reply from PTG and its the same reamer. ...

Got a reply from PTG and its the same reamer.

Still no reply form border barrels.

I attached some measure pictures of the 750gr amax. It would be a great help if you d-mon could help me and...
Forum: Other Subsonic Topics 04-17-2007, 12:52 PM
Replies: 21
Views: 5,663
Posted By jope
Acces to old handloaders

D-mon:

Can the old handloaders articles be read anywhere on the internet?

And it uses the .50BMG projectiles right???

I wrote border barrels last weekend to ask about the twist for 510...
Forum: Other Subsonic Topics 04-16-2007, 04:21 PM
Replies: 21
Views: 5,663
Posted By jope
50/50/70 & phantom case volymes, diameters and suitability for heavy subsonic loads

d-mon thanks for the tips:

How is the case volyme in caliber 50/50/70? Does it use the same barrel diameter as 50BMG? Lothar Watlther has just a wee little too much carbon and cromium for welding....
Forum: Other Subsonic Topics 04-15-2007, 05:10 PM
Replies: 21
Views: 5,663
Posted By jope
Wrote border barrels / help for force calculations

I just wrote Border barrels... lets see what they have to say about the twists?

Btw, does anybody know how to calculate the force directed on the barrel mount. Im currently working on .300 Whisper...
Forum: Other Subsonic Topics 04-10-2007, 11:46 AM
Replies: 21
Views: 5,663
Posted By jope
Twist rate and caliber for subsonic 50MBG payloads??

Hello,

I'm thinking about building a .510 Whisper ( or similar if you can argument that something else is better)

I have read that the 750gr Hornady AMAX performs the best. I would intend to...
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