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Thanks Norcy, Please update with Velocities and SD'S when you have finalized. I will be loading 8133 in my 300 norma, 28 nosler, and .338 Norma soon. Have loads for N570, but like others I can't locate any. Have loads for reloader 33, but didn't like what I saw when I did a temp stability test...

Norcy, Are you running a standard 300 Norma or Improved?

Anyone try IMR 8133 yet?

Any updates on 8133 in the 300 Norma Mag?

Lapua has finally published the offical Bc's for the 136 scenar L. The published G1 B.C is .545 and the published G7 B.C. is .263.Not quite the estimated .600 G1. It is published on there website.

dworrel, Thanks for the info, but i can't see the g1 b.c for the 136 grain scenar being .700. Did you mean .600? So was your dope consistent with what your ballistic program or range card was telling you or did you have to tweak the bc to get hits @ 1350 yds?

Jbailey, My loads were chronographed with an oehler 35 chrono and the drops to 1,000 yds were spot on based on my elevation adjustments, so i am pretty sure my muzzle velocities are close. I published my muzzle velocites @ 2,928 fps, but that was 18' away from the muzzle, so my actual muzzle...

Jbaily, That's what i am thinking as well, Our numbers are close. My velocities were recorded with an oehler 35 chrono. Es is 22 fps, and sd was 10. I still need to rule out the es not being the problem. I was at 381' altitude . Barometric pressure was 29.5. Temperature was 98* f, humidity was...

The caliber I am running is 260. The action is a remington 700 action . SAMMI Specs. I am running a 26" Broughton 5c Barrel. Went to 1k today. Held 3 shot 6" group at 1k. I then went to 1,100 yds and 1,200 yds. Bullets were entering transonic flight and did not do well. Will Post more results.

Load data for new 136 grain scenar. Thanks pat for your info. I am loading 43 grains of h4350. Avg muzzle velocity is 2,928 fps. SD is 10. Loading .010" off lands.

Re: AX Chassis- Lets see them! I am building the same rifle and will have it back this week. I am looking at the larue rings to swap optic between two weapons systems. I see you are using the obr mounts. Is that The LT 111? I will have a 20 moa base. Not sure what you have, but it looks like...