im no wizard but a SD of say less than 50fps is going to be fine.
How did you test your ammo...
did you shoot 5 shots of each load onto its own target?
I will usually shoot round robin style on test loads . This will spread out the variations in barrel/action/wood heat issues.
you been around enough to know I shoot poozzeee loads even with jacketed ammo.
I like to apply the OCW method to my load testing and find that sweet spot that delivers good accuracy and less deviation from point of aim in the largest spread of powder charge. Its a little harder to do accurately with iron sights but should show its face well enough to find that nice node of accuracy and powder charge.
Most of my loads for 100/200 yards are on the lowr side of the middle charges of published data..
For my 1903A4 i have a 200 yard load thats running about 2250fps with a 155 grain bullet. its good for about MOA when i can hold MOA ..
My 1903a3 has not seen a jacketed round in 4 years for 200 yard target work. 165 grain flat nose cast bullet at about 1500-1600 FPS
on this front, i was figuring I'd probably go with one of the low mid range loads as well due to the fact that my barrel is original 1918 to the low 900,000 receiver on my 03 (and guages at less than 1!)...yet another rifle i'll likely be working up cast loads for once I learn how (enter Michael J. Spanglers casting seminar). I was getting an average of 3 MOA with a flyer in every group...not too shabby for open sights and dusk lighting I guess. I really just wanted to see how it shot...almost two years I've had that rifle and never fired a round through it. Last week you got me thinking when you said your 03 liked 168gr chow and I realized I had a 'load workup' still sitting on my reloading bench just waiting to get shot. now today you tell me you shoot 155's out of your 03...lol. :/
yes, I do shoot 5 shot groups, but i have yet to figure out how to make a 'round robin' work for me just yet. i'm usually on a time crunch and don't really have the space for that many targets at my range with all the tactical turds hanging around shooting their pooozzzeeee guns. I forgot my phone at home today, so my chrono data will get posted tomorrow sometime...maybe you guys can help me make a choice on a load for this rifle...at least with this powder. I wish working up loads wasn't such a pain in the balls, because I'd have one made for every rifle with every powder and projectile I have at the ready.