PSA pistol upper

[KD85]

Has onyone used the 6.5 Pistol upper from PSA. what kind of accuracy did you get out of it?

[mdewitt71]

Has onyone used the 6.5 Pistol upper from PSA. what kind of accuracy did you get out of it?

Are you talking the 12" Grendel upper?
If so then yes, I have had mine for a bit now.

http://www.65grendel.com/forum/showthread.php?17743-12-inch-PSA-6-5G-Upper-results-1st-Range-trip

Here is a Video of me shooting some cheap wolf at 100 yards with a new scope on it.

[mtnlvr]

I've got a 12" SS PSA 6.5 Grendel. No reliability issues...gas block was adjusted way open. Accuracy sucked out of the box with Hornady Black and the various ladders I worked up reloading. So I took it apart, lapped the receiver face, crowned the bbl, and bedded with blue loctite. Next outing was a huge improvement. Had a 0.4moa 3 shot group going at 100 yds. 4th shot I rushed an inch high, 5th shot just right. Omitting the 4th show would have been 0.8moa. Adding the 4th back in yielding 1.25 moa. Now I'm starting over with my ladders.

So far, I'm impressed with the 12". Velocities should end up in the 2200 fps range I think.

[VASCAR2]

I bought the 12” CMV Nitride PSA 6.5 Grendel pistol kit. I used a PSA stripped lower and swapped out the EPT Trigger for a RRA NM. I started out using a 1-6 Vortex Strike Eagle scope but switched to an older 2.5-10x42 scope. I’ve only got about 300 rounds through mine. I’ve shot a couple of groups with Hornady black which were 1” at 100 yards. My reloads of various bullets run about 1.5” on average for five shots. Wolf Steel case FMJ shoots 2.5”-3” groups and is pretty inconsistent with a couple groups at 4” or a little more.

The accuracy has improved but it made a lot of difference switching triggers and scope. I like my PSA pistol which has been 100% reliable.

[65GbySeven]

Hade mine for about 6 months now. No trouble at all with FTE, FTF, FTL, etc. Two factory rounds shoot well/MOA, 120 Federal Fusion and the AA 120 TSX, but everything else was outside 1" at 50 yards. I have developed one hunting load that shoots 1 MOA at 100 yards. 110GR Controlled Chaos, 29.5 Grains of RL-15, Hornady Brass, CCI 400 primers, COAL of 2.250. Optic I chose was Leupold AR Mod 1 1.5-4 with the illuminated reticle. PSA SBA3 EPT lower kit with JP Enterprise enhanced reliability springs.

[Happy2Shoot]

I've got a 12" SS PSA 6.5 Grendel. No reliability issues...gas block was adjusted way open. Accuracy sucked out of the box with Hornady Black and the various ladders I worked up reloading. So I took it apart, lapped the receiver face, crowned the bbl, and bedded with blue loctite. Next outing was a huge improvement. Had a 0.4moa 3 shot group going at 100 yds. 4th shot I rushed an inch high, 5th shot just right. Omitting the 4th show would have been 0.8moa. Adding the 4th back in yielding 1.25 moa. Now I'm starting over with my ladders.

So far, I'm impressed with the 12". Velocities should end up in the 2200 fps range I think.

@mtnlvr

How did you re-crown the muzzle? I was thinking of trying the brass screw method. What do you think?

[mtnlvr]

That's what I did. 1/4" brass domed slotted head screw. Took my time. Applied valve lapping compound to both parts, moderate pressure while spinning somewhat slower with a drill while swirling or orbiting the drill and screw so the screw wouldn't wear all in one spot. Wipe clean, check progress and repeat until desired crown depth is achieved. I went about 3x depth radially compared to the barrel's groove depth. I used two screws. The first I used mostly and it ended up wearing to an odd shape. Once I was close to the depth I wanted I switched to the other screw for the "finishing" passes where I used less pressure. I did notice a little burr when I was done but I'm pretty sure that shot out after a handful of rounds. I think less heat (less pressure and slower speed) would keep the burr down.

[Happy2Shoot]

Thanks!

Did you use Brownells upper lapping bar tool?

[mtnlvr]

No, I made my own on a lathe at work.