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+--- Thread: 6 mm Grendel PTG reamer freebore (/showthread.php?tid=18734)
6 mm Grendel PTG reamer freebore - bachekermooni - 04-10-2019
Does anyone know what it is?
Thanks.
6 mm Grendel PTG reamer freebore - papapaul - 05-06-2019
The neck section on my reamer measures about 0.260". Specs on the cartridge lists the neck as 0.251" that would be 0.009". But when I measure new brass I get less than 0.251". So freebore with new brass would be slightly more than 0.009".
6 mm Grendel PTG reamer freebore - LtDan - 05-16-2019
bachekermooni Wrote:Does anyone know what it is?
Thanks.
their website says .120 is most asked for
6 mm Grendel PTG reamer freebore - bachekermooni - 05-19-2019
Thanks. I looked but could not find it. Do you have a link?
6 mm Grendel PTG reamer freebore - LtDan - 05-19-2019
Here it is on the bottom of the page http://pacifictoolandgauge.com/custom-chamber-reamers-order-any-freebore-neck-nopix-/12137-6-mm-grendel-ii-chamber-reamer-order-any-frebore-neck.html
6 mm Grendel PTG reamer freebore - LtDan - 05-19-2019
Have you had your barrel reamed yet? I want to build one also
6 mm Grendel PTG reamer freebore - bachekermooni - 05-21-2019
LtDAN. Yes. The rifle is finished and the break-in is complete. The problem I have is with the 90 gr Hornady ELD-X. When I load it being 20 mil off of lands, I get this (2.1890" COL). That leaves me very little room for powder. At 29 gr of CFE 223 and 28 gr of TAC it is getting compressed already.
I am going to the range on Fri to see what happens. My GS told me if needed he will add another 50-60 thou to the throat. Not sure if that is a good idea.
6 mm Grendel PTG reamer freebore - LtDan - 05-23-2019
bachekermooni Wrote:LtDAN. Yes. The rifle is finished and the break-in is complete. The problem I have is with the 90 gr Hornady ELD-X. When I load it being 20 mil off of lands, I get this (2.1890" COL). That leaves me very little room for powder. At 29 gr of CFE 223 and 28 gr of TAC it is getting compressed already.
I am going to the range on Fri to see what happens. My GS told me if needed he will add another 50-60 thou to the throat. Not sure if that is a good idea.
That seems a little short in the throat none of the 6.5 barrels (5) are that short in the throat. I think you need to bump it a little more. My BHW 6.5 G barrel is the tightest throat and the coal for the 95 vmax which is the fattest ogive at .020 off 2.212
6 mm Grendel PTG reamer freebore - soloelcap - 05-23-2019
Your OAL of 2.189 sounds about right. In my 6mm Grendel barrel with an 87 V-Max I get 2.120 OAL touching the lands. What kind of speed are you getting with 29. CFE? My testing results CFE shot very well with the 87 V-Max.
I'd leave the throat as is. PTG probably has a good reason for the reamer specs.
6 mm Grendel PTG reamer freebore - bachekermooni - 05-23-2019
headed to the range tomorrow. I am taking new Lapua cases - prepped, 87 BTHP and 90 ELD-X, TAC and CFE powders, 400 and 450 primers and seater, LE Wilson micrometer seater, arbor press, Hornady powder thrower with micrometer, and my scale - and of course the chrony. WIll report in the afternoon.
6 mm Grendel PTG reamer freebore - soloelcap - 05-24-2019
Cool. Sounds like you know what you are doing, that is the professional way to work up loads, at the range. Let us know how it goes. I haven't tried the 87 HPBT Match yet, I can't wait to see what speeds you get.
6 mm Grendel PTG reamer freebore - Overwatcher - 06-04-2019
I am 2.220 COAL to the lands with the 90 ELD-X and one of Rithces .243 LBC(BHW barrel). Youll have to give us a range report. I just got some 90's in and will have some ready for the range this week.
Just some side notes from the Labradar
87 Berger VLD-2830 AVG 18" BHW.
Also a friend with a 22" TBOX 6 Grendel-2920 with 87's
Some minor smileys on the brass,But both flat nodes on the warmer end.
6 mm Grendel PTG reamer freebore - bachekermooni - 06-04-2019
Overwatcher Wrote:I am 2.220 COAL to the lands with the 90 ELD-X and one of Rithces .243 LBC(BHW barrel). Youll have to give us a range report. I just got some 90's in and will have some ready for the range this week.
Just some side notes from the Labradar
87 Berger VLD-2830 AVG 18" BHW.
Also a friend with a 22" TBOX 6 Grendel-2920 with 87's
Some minor smileys on the brass,But both flat nodes on the warmer end.
Thanks for the info. So my 6 mm AR throat is very close to your 243 LBC (only 0.01 shorter).
I will post the results of my 87 VLD tests. It will be late next week.
6 mm Grendel PTG reamer freebore - 454bore - 06-05-2019
The 108eld hits the lands at 2.300
In mine.
I get 2830 fps in a 22 inch with 2000-mr.
3/4 inch and under.
Tried 95 ballistic tips with same powder and it went under half inch
at 100 yards.
Got 50 fps extra with them.
They hit the lands at 2.200 in my chamber.