45 Raptor

[texasgunnut]

I did a search and did not find anything on this topic.  I'm currently in the process of load development for my Aero-Precision AR-10

Huge learning curve, btw as I have decided to go on an unconventional path by using heavy cast boolits. I have been making progress but not without a lot of drama.  Right now I'm using a 400 gr Lead Flat Nose boolit powder coated. Not ideal as the meplat is a little wide and occasionally hits hard on the mouth of the barrel extension.   I am going to have a custom mold made with a smaller meplat and truncated cone design to hopefully eliminate this problem. I have not done any chrono testing yet, but am thinking about doing that today.  If anyone has any experience with, or interest in this please pipe in.

The photo I've attaches shows the 45 raptor compared to 30-06, 357 mag and 38 short colt.  The boolit picture was my first attempt, did not work out as the ogive interfered with the throat.

Also pictured it the boolit I'm currently using, and the modifications I plan.

[shepp]

Welcome to the forum feel free to tell us about yourself in the intro section

 

there is a post on this caliber probably a year or so old, but I'm not sure where it's located

[texasgunnut]

I have a barrel extension/feed ramp question for you guys.   As you may or may not know, the feed ramp for the 45 raptor is located in the magazine and consists of an aluminum block with feed grooves machined in and doubles as a spacer as the coal is shorter than the .308.  The rest of the mag is basically standard DPMS .308.

Anyhow, I've been noticing small dings in the upper 1/4 of the case.  The spacing on the dings corresponds precisely with the sharp edges of the aft sections of the barrel extension/locking lugs.  I'm wondering how much smoothing over of the back side would be okay?  I'm thinking if I could dremmel down the sharp edges on the back it would take care of that problem and go easier on my expensive brass. Hopefully this makes sense.

[texasgunnut]

Here's my new and improved boolit design (not yet tested).  Now in the Accurate Molds catalog 45-360 H

[98Z5V]

13 hours ago, texasgunnut said:

I did a search and did not find anything on this topic.  I'm currently in the process of load development for my Aero-Precision AR-10

That is not an AR-10.  Hate to burst your bubble.

[shepp]

34 minutes ago, 98Z5V said:

That is not an AR-10.  Hate to burst your bubble.

Wellllllll he can try, but it might turn into a cluster fuck...... 

[98Z5V]

I tossed this into his intro thread, just trying to save the guy some headaches down the road...

 

[survivalshop]

13 hours ago, texasgunnut said:

I have a barrel extension/feed ramp question for you guys.   As you may or may not know, the feed ramp for the 45 raptor is located in the magazine and consists of an aluminum block with feed grooves machined in and doubles as a spacer as the coal is shorter than the .308.  The rest of the mag is basically standard DPMS .308.

Anyhow, I've been noticing small dings in the upper 1/4 of the case.  The spacing on the dings corresponds precisely with the sharp edges of the aft sections of the barrel extension/locking lugs.  I'm wondering how much smoothing over of the back side would be okay?  I'm thinking if I could dremmel down the sharp edges on the back it would take care of that problem and go easier on my expensive brass. Hopefully this makes sense.

  Photo's of the feed ramp would help , but most likely you would have to remove the Locking lugs completely to stop brass indentations , you might reduce it by polishing off any sharp edges . You have to be careful not to alter them too much .  Are these dents on fired cases or from test feeding them ? 

   The Rifle was not designed to feed what you & others are feeding it . The spacer & whatever they have for feed ramp system is a conversion for a Rifle designed for something completely different & you may see issues . Also remember , Brass cases were never meant to be reloaded , they are expendable & not much was designed for them to do anything but hold all that stuff together when fed & fired reliably , after that, no manufacturer designs or spends any R&D to save a spent case . Just the way it is for us Hand Loaders .

    As far as your Bullet design , the new design with the tapered nose , should fair better then a round nose , but only testing will confirm .

Good luck .

[Armed Eye Doc]

He self-banned because he was a special snowflake who couldn't stand being told he was wrong.

[shepp]

 

[survivalshop]

WTF ?

[Armed Eye Doc]

51 minutes ago, survivalshop said:

WTF ?

 

[shepp]

52 minutes ago, survivalshop said:

WTF ?

Go to his intro, think 98 has passed the DEWS onto me cuz it was peggedwoth this one