JP Rifles Grendel chamber?

[CanSniper]

Any one know how long the throat is on JPs Grendel chamber? Any where close to being able to touch the lands from a AR mag? My guess is probably not. But thought I would check.

The reason I am asking is, I am planning my first ground up precision build. Was thinking 6mm Grendel, having a reamer cut the way I want it, and have a Smith spin me up a barrel.
A JP 6.5 barrel would be the easy button.

 

[TonyTheTiger]

I never took measurements but I've loaded for my bros JP Grendel quite a bit. I never hit lands with 123 Amax, 123 ELD or 107 TMK at max mag length of 2.3".

 

[bobke]

Tony
What mag are you using that allows loading to 2.3” for an AR? I’m pushing to get much past 2.285 in ASC or AA mags.

 

[TonyTheTiger]

Your right, my ASC Grendels only allow 2.29" at best, even though my 223 ASC mags allow 2.31". Thats what I get for posting before measuring. Either way, I never hit lands.

 

[bobke]

To the original question:
123 SST: 2.337
123 Amax: 2.35
123 Scenar: 2.33
129 ABLR: 2.448
120 BT: 2.337
123 CC: 2.31
123 Sierra: 2.385
120 Sierra spitzer: 2.300
You’ll only get within spitting distance of lands with most accommodating mags out there, which to date-for me, are ASC’s.

 

[CanSniper]

To the original question:
123 SST: 2.337
123 Amax: 2.35
123 Scenar: 2.33
129 ABLR: 2.448
120 BT: 2.337
123 CC: 2.31
123 Sierra: 2.385
120 Sierra spitzer: 2.300
You’ll only get within spitting distance of lands with most accommodating mags out there, which to date-for me, are ASC’s.

Awesome, exactly what I was looking for.

Thanks.