grendel speed

[Nelama]

hi,

I'm new to grendel and today i did the 10 shot load development and got 2648fts with lapua scenar 123grn and N133 at 27.3 grains, no pressure signs, the rifle is a CZ 527 MTR , is this speed comum to the grendel? I usually see post wherepeople are strugling to get 2500fps.

Any opinions are welcome
Thanks

[SDW]

25" barrel? If so, that will help increase velocity. Most ARs have barrels 20" or under. But that velocity average does sound impressive for a 123gr bullet.

I'm sure others will be able to post with more helpful info. I don't have experience with that powder.

[Bigs28]

Barrel length, bullet weights, powder play into the velocity. I get 2450fps out of my 12" barrel shooting 110g maker trex. Ive seen posts of much higher velocities on here.

[LRRPF52]

[SCJim]

On AR's you get some FPS loss due to the gas port and how far from the muzzle it is. My pet load picks up about 75 FPS in a 22 inch barrel if I close off the gas port

[Nelama]

Lapua brass never fired
Sellier bellot primers
N133
Lapua scenar 123grn

I prep the brass with a mandrel (264) and thats it

the lands are at 1.695 base to ogive and I load .005 of off it, the magazine lenght is no problem

I mean I'm no complaining it is just that never really seen speeds like this, you see the od one but when it happens to you, it nice

thanks

[Nelama]

yes I did look at the load on they're site, and that is what I followed and went a bit over to check for pressure

here are the speeds for the ladder test
# FPS FT-LBS PF
12 2658 1929.88 326.93
11 2648 1915.39 325.70
10 2595 1839.48 319.18
9 2588 1829.57 318.32
8 2579 1816.87 317.22
7 2575 1811.24 316.73
6 2551 1777.63 313.77
5 2518 1731.94 309.71
4 2472 1669.24 304.06
3 2497 1703.17 307.13


I did shoot 2 shots first just to check the chrono was good to go

[Bigs28]

What chrono?

[Kosh65]

[Nelama]

What chrono?

magneto

[Harpoon1]

hi,

I'm new to grendel and today i did the 10 shot load development and got 2648fts with lapua scenar 123grn and N133 at 27.3 grains, no pressure signs, the rifle is a CZ 527 MTR , is this speed comum to the grendel? I usually see post wherepeople are strugling to get 2500fps.

Any opinions are welcome
Thanks

http://www.65grendel.com/forum/showthread.php?23452-Surprising-ES-SD-with-Leverevolution

[LR1955]

Could be correct but if so, it would be an outlier.

Wonder about the chronograph, set up, and light conditions.

Chronographs are not perfect by any means. Good to get a decent idea but nothing to take as an absolute.

LR-55