ar comp and sierra matchkings

[achristian8]

I picked up some ar comp and have some 123 sierra matchkings. Does anyone know what the min. Max. Powder charge is and what the c.o.a.l. is.?

[rasp65]

I have used the powder with 123 A-Max and have gone up to 28.5 gr. I found 27 gr most accurate.

[Sniper338]

No experiance with AR comp here...

[LRRPF52]

It's one of the most stable powders you can use in the Grendel, with very tight Extreme Spread. There is data for it in Volume II of the Reloading Handbooks.

[achristian8]

Thanks I just ordered a copy. I called Alliant powders and they didn't even have data on the grendel.

[tackdriver]

I believe Drifter has done a bit of load development w/ar comp, it was a very predictable long range load if I remember correctly.