Howa mini rebarrel

[bj139]

And I can buy grendel factory ammo and brass and bullets as well.

I'm not seeing your point here really?

My point is that you seem to want a larger case than the standard 6.5 Grendel.

Where can you buy Grendel Max ammo?

[Msalm]

If you have the reamer made to the specs VonGruff put out there, I believe he set it up so he could just use standard 6.5 Grendel dies. With only another .050" longer on the shoulder, a reamer maker should be able to just grind the neck and throat back .050". With the body taper and only .050" offset to the rear (running the Grendel reamer in .050" deeper) would be no real issue with a bolt gun using standard Grendel dies. When I read about his project, I envisioned being able to re-create that chamber with two standard Grendel reamers. Ream first to zero headspace with a standard reamer, then take the second reamer with the neck and throat ground away and ream to .050" deeper headspace.... Just a thought.

[A5BLASTER]

My point is that you seem to want a larger case than the standard 6.5 Grendel.

Where can you buy Grendel Max ammo?

Same place I buy grendel brass, it's fireformed from grendel brass, the only deference is the shoulder is blown forward to 40 degrees and you then trim the neck slightly shorter but end up with the case the same length as a standard grendel case.

It has been well documented here under Von Gruff's thread about it when he developed it.

Edit to add. This will be a handloads feed rifle only and most lickly only single feeding rounds.

[A5BLASTER]

If you have the reamer made to the specs VonGruff put out there, I believe he set it up so he could just use standard 6.5 Grendel dies. With only another .050" longer on the shoulder, a reamer maker should be able to just grind the neck and throat back .050". With the body taper and only .050" offset to the rear (running the Grendel reamer in .050" deeper) would be no real issue with a bolt gun using standard Grendel dies. When I read about his project, I envisioned being able to re-create that chamber with two standard Grendel reamers. Ream first to zero headspace with a standard reamer, then take the second reamer with the neck and throat ground away and ream to .050" deeper headspace.... Just a thought.

I think you maybe correct in that thinking.

I need to sit down and read and look at the reamer print when I get it and go back throw his posting's on it more to get more familiar with it.

Like I said it's still a long ways off but as it is the howa isn't being used now but if I do this to it I know I will use it.

[biodsl]

Howa prefit barrels from Criterion and McGowan. Like the Savage, they use a barrel nut so you can set the exact headspce.

http://criterionbarrels.com/prefits/howa

http://mcgowenbarrel.com/the-howage/

Am I missing something here? These look like prefits for the 1500 series rifles. I thought we were talking mini action.

[hill37]

I'm pretty sure Pac Nor makes Mini Howa Barrels, and do special order barrels. You furnish reamer and headspace gauges.

[grayfox]

If you have the reamer made to the specs VonGruff put out there, I believe he set it up so he could just use standard 6.5 Grendel dies. With only another .050" longer on the shoulder, a reamer maker should be able to just grind the neck and throat back .050". With the body taper and only .050" offset to the rear (running the Grendel reamer in .050" deeper) would be no real issue with a bolt gun using standard Grendel dies. When I read about his project, I envisioned being able to re-create that chamber with two standard Grendel reamers. Ream first to zero headspace with a standard reamer, then take the second reamer with the neck and throat ground away and ream to .050" deeper headspace.... Just a thought.

If the shoulder angle is different from Saami, from 30* out to a 40*, then seems like you need a different reamer. How else do you get that 10* extra shape in the chamber's shoulder?

'Course if you want to do it b/c you can, it's your dime so go ahead...

[A5BLASTER]

If the shoulder angle is different from Saami, from 30* out to a 40*, then seems like you need a different reamer. How else do you get that 10* extra shape in the chamber's shoulder?

'Course if you want to do it b/c you can, it's your dime so go ahead...

My understanding is it's simple a sammi reamer that was cut so it would ream it .50 thousands deeper and cut it with a 40 deg shoulder area for the chamber.

Went back through Von's post and he did use a standard 6.5 grendel foster bushing sizing die but had the die cut at the factory with a 40 deg shoulder area instead of the sammi grendel 30 degree.

He did this so he could load out to 2.400 of an inch with min changes to the grendel chamber and have common support to supply the rifle with fireformed grendel brass and common powder,primer and bullets typically used in the grendel.


It's all right here on this fourm for others to look up and see how he developed it.

[Msalm]

I must be thinking of a different Grendel Max as I have a picture saved of the drawing of the reamer. It still has the same 30 degree shoulder, .431" shoulder diameter, .293" neck diameter, .210 neck length, a base to shoulder length of .945. In the notes it says 'as for 6.5 Grendel except for Free Bore, Chamber Length, Neck length, and diameter. Heaspaced .050" long. Free bore length of .177 and free bore diameter given as .2645" diameter.

If that's the same drawing as in his post, my method would work but have the standard Grendel throat and neck diameter, although I do have a 'bolt gun' Grendel reamer that is tighter than the original version.

[A5BLASTER]

I must be thinking of a different Grendel Max as I have a picture saved of the drawing of the reamer. It still has the same 30 degree shoulder, .431" shoulder diameter, .293" neck diameter, .210 neck length, a base to shoulder length of .945. In the notes it says 'as for 6.5 Grendel except for Free Bore, Chamber Length, Neck length, and diameter. Heaspaced .050" long. Free bore length of .177 and free bore diameter given as .2645" diameter.

If that's the same drawing as in his post, my method would work but have the standard Grendel throat and neck diameter, although I do have a 'bolt gun' Grendel reamer that is tighter than the original version.

I'm not sure now, got me to wondering lil.

Waiting on sneakyone to get back with me about the reamer print.

Edit to add...

I'm mistaken the shoulder stays the same and it's a standard sammi reamer but at time of cut it is just run .50 thousands deeper.

Dang pain pills got my mind warped or something.

[flyrod]

I've had good luck with wilson blanks from raggedholebarrels.net at about half the price of the big names.

I set up one mini with a 22 caliber wildcat that uses 30-round magazines from the 30 carbine:



And I fixed the rubber stock while I was at it.

[A5BLASTER]

Then again I might just sell it and grab me a 24 or 26 inch barrel and build me a second heavy barreled 1000+ yard ar grendel upper to swap out with me 20 inch upper.

[Msalm]

Then again I might just sell it and grab me a 24 or 26 inch barrel and build me a second heavy barreled 1000+ yard ar grendel upper to swap out with me 20 inch upper.

[bj139]

Am I missing something here? These look like prefits for the 1500 series rifles. I thought we were talking mini action.

I didn't know the 1500 and the mini used different barrel diameters. Many people want to load to longer COAL so maybe the 1500 might be best in that case.

[A5BLASTER]

Don’t do that, the Mini’s are great in their own right, but I tend to keep them light and trim for handy carry/hunting rifles.

I already have a 16 inch and building a 12 inch pistol that fill those needs.

Have a heavy bench long range target and hunting 20 inch rifle ar grendel as well.

So the mini as is fills no needs, so if I keep it I will be doing basically a wildcat kind of mini magnum off the sammi grendel brass.

Should beable to use different weights and types of bullets but it will be mostly for the 130 to 140 grain super high bc target bullets to get a bit more speed and beable to engage steel past the 1000 yard line.

Down here it gets very hard to hit steel past 1000 yards without a bit more speed and bc, it can be done but no need to struggle when I have a perfectly good rifle doing nothing I can sup up and trick out to fill that need for playing at that range