Load development for AR tac matches... help!

[revenant]

Ok here is the scenario- I would like to develop a good load for 55 gr. FMJ .223 for my tactical match Ar-15.

The problem- I am using a,accurate) red dot type scope. Is it still valid to check for load accuracy using a 50 yard target rather than a 100 yard target as a benchmark, or should I just put a scope on it, develop the load at 100 and then swap the red dot back on,which I would prefer not to do)?

Oh, and any ideas as to a relatively cheap round to use for this purpose,besides the obvious 55 gr. FMJ) would be good too. These matches usually have targets at 50 yards or less except a few out to 200-300 yards,but only at a certain Stage, not every stage). I was thinking of developing a 69 gr. load for the long shot stage then using 55 gr. FMJs for the rest of the match.

Ideas/suggestions? Thanks!

 

[Sarge]

My Bushmaster AR loves 25.0 grains of AA2230C with a Nosler or Sierra 69 grain match bullet. my chrono shows 2894 FPS in my AR's 24" barrel and 2733 FPS through my Kimber's 18.25" barrel. . I would shoot that one load at every distance from 25 yds. on out to 300yds. . I seat my bullets to "JUST" fit in the magazine. My Kimber SVT, puts this same load into 3/8 inch 5 shot groups at 100 yds.

 

[constructor]

I swap scope and site to work up loads every time.
25gr H4895 and 55s work for me out to 400. H322 will give you more velocity if you need it.
55gr win. bullets from "widners reloading"