New toy!

[Cutright]

I just received my new Caldwell chronograph and had some interesting results. I was working up a max load for my 16” AR with 250gr bullets. I was loading with Lil Gun (older can), measured each charge, and zeroed the scale between each load. I’m surprised on the large range of speeds I received.

40gr. 41gr. 42gr.
2345. 2289. 2372
2264. 2339. 2372
2424. 2327. 2342

My highest velocity came with the lightest load. Is this common? Am I doing something wrong? Does it make a difference because it’s an AR. I have been loading a long time and I thought that one grain of powder makes a big difference. The chrono was about 15’ away from muzzle because when it was closer, I was getting goofy reading because of the muzzle break

[Al in Mi]

what bullet were you shooting

[Cutright]

I’m shooting Hornady 250gr. blems from Midway. I’m hoping to get the new 250gr. TTSX Barnes if they are ever in stock somewhere

[Cutright]

I found an old thread on this and should add the I use a taper crimp to .475 and a stab crimp. Another lesson I learned that when shooting off the tailgate of an UTV, you must be extra careful because them muzzle blast with a Ross break will blow out a taillight!

[Texas Sheepdawg]

I found an old thread on this and should add the I use a taper crimp to .475 and a stab crimp. Another lesson I learned that when shooting off the tailgate of an UTV, you must be extra careful because them muzzle blast with a Ross break will blow out a taillight!

Indeed!

[HawgHunter]

I’m shooting Hornady 250gr. blems from Midway. I’m hoping to get the new 250gr. TTSX Barnes if they are ever in stock somewhere

Gunbroker and Natchez Shooter Supply has new stock. I received my delivery last week.