By the way hand landing a 69 grainer for short work like under 300 yards, & 77 grain for 600 ....problem is most AR type rifles are not throated deap enough for 80 & heavierI'm certain this well get me blasted by the smarter people then I, but, you want to improve your rifles groups, A) install a great trigger, B) learn proper marksmanship C) practice
I picked up my first 2 CMP medals using a 16 inch PSA with a crappy trigger & factory 55 grain ammo.....
I was finally able to get out and shoot my Springfield Armory Saint Victor 5.56 AR the other day. Was very pleased with the functionality, it fed and functioned well. I was trying to zero my Aimpoint PRO optic. I was zeroing with Winchester M193 55 grain FMJ ammo. At 25 yards it was fine, but at 50 yards it was abysmal. Horrible groups. I know that each barrel likes different ammunition, but there are also certain brands/loads that are constantly more accurate with certain rifles. Does anyone have any experience with AR`s and 5.56 ammunition, and specifically, what brands have a history of being most accurate in AR platform rifles?
+1 Weight & twist matters... 55 grn doesn't excel in 1:8 twist
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This is the reason I have asked for advice. I`m sure I`m not the only one, but I cannot afford to buy up a bunch of different bullet weight and different brands to try. I was hoping to get advice based on others experience and greatly lessen the cost to figure out a round to shoot that would be most accurate.My rifles are all 1-8.
I haven't found a 62gr ammunition they like. As in 1moa or less.
I stick with 75-77gr bullets. Handloaded 90% of the time.
I did find 55gr Fiocchi FMJBT to shoot well in a few of my rifles. Green box stuff. Just around 1.25 moa to 1.5 moa. Might give it a try if you haven't yet.
I know every barrel is different. You can buy a bunch of different brands, bullet weights, bullet types and try to find out what it likes also.
I've never had any decent accuracy 1moa-1.5moa with any M193 or M855. I don't even buy that stuff anymore of any brand.
Every firearm is different, what is accurate in one may not be in the next due to variations in machining. I don't know of any shortcuts to testing in a particular rifle.This is the reason I have asked for advice. I`m sure I`m not the only one, but I cannot afford to buy up a bunch of different bullet weight and different brands to try. I was hoping to get advice based on others experience and greatly lessen the cost to figure out a round to shoot that would be most accurate.
Try that 55gr Fiocchi FMJBT Green box. 50rds per box.This is the reason I have asked for advice. I`m sure I`m not the only one, but I cannot afford to buy up a bunch of different bullet weight and different brands to try. I was hoping to get advice based on others experience and greatly lessen the cost to figure out a round to shoot that would be most accurate.
You Soldiers have it easy peasy at 300Uh your AR is a 300 m weapon m193 likes to yaw and do bad things.
4 moa is good.
What's the purpose for this rifle? Is it your only AR? As stated above, every barrel is different. You can take 2 Springfield Saint barrels of the same specs and one will shoot a particular ammo better than the other. It's just how it is. Post a pics of groups at 50yd-100yds so we can see what your definition of abysmal is. More than likely the 55gr will work just fine for training and drill work. If you find a load that shoot considerably better with consistency then buy a case of it. And stick to 55gr stuff for range fodderThis is the reason I have asked for advice. I`m sure I`m not the only one, but I cannot afford to buy up a bunch of different bullet weight and different brands to try. I was hoping to get advice based on others experience and greatly lessen the cost to figure out a round to shoot that would be most accurate.
So you've never been to a High Power Match then?Also, from a logic point of view, I feel 1:7 twist would be overrated, as it seems that 1:8 would be in a sort of "Goldilocks" zone of being able to handle the more common 55gr and 62gr, as well as handle the 69gr and 75gr. Except for precision shooters loading single rounds or using bolt actions, who actually shoots 80gr? I personally don't know of anyone who has bragged about 1:7 and used anything higher than a 62gr.
I also will admit I haven't had a lot of trigger time behind a 1:7 compared to 1:8 and 1:9.
I've never been to one, however one day I would like to maybe get into more precision 223 shooting. Also keep in mind I unfortunately don't know too many people who take precision seriously. Some of them actually replaced their barrel for a 1:7 over their stock 1:8 and 1:9 even though they never shoot anything above 55gr or 62gr M855.So you've never been to a High Power Match then?
Other than SS109 steel core that has a longer bearing surface than lead core 62 grainers about all we shoot in 223 are 69 and 77 grainers.
All of our modern AR's are 1-7 twist.