Very bad idea. The poster said 55 grain varmint. I bought a 20 inch barrel PSA 1:7. 55 grain loaded to only 3200 fps would fly sideways and odd angles though paper at 100 yards. 62 grain didn't even make a round hole. Only when you dumbed it down to sub 2750 fps like 16 or less inch barrels did it even group. I was ****ed that I took someones poor advice.
all my AR's are 20 inch SS and 1:9 predominantly and a couple of 1:8. The max 223 bullet is kind of 75 grains because of 2.26 inch limitations.
So the correct answer is 1:7 for only 8 to 16 inch barrels or something that you are only going to be shooting 69 gr and up only.
To the poster one of my competition 3 gun ar's is a Ballistic advantage SS with QPQ barrel coating 9:1 because its made for high useage and 62 gr HPBT for relatively cheap shooting. I was buying bulk 5000 and 10,000 boxes for for under 8 cents years ago. But anyway I had them make it non threaded and fluted for a 34 oz barrel
I did install a 2.5 pound drop in single stage trigger. The scope is a 8X32 with 60mm objective to get on the PD's fast. June wyoming hunt I went through 300 HP rounds the first day. It gets the 62's going 3200 fps with leverrevolution or CFE 223
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this is my light weight 20 inch SS 1:9 wylde with a .625 gas block piston rifle. titanium brake. 2.5 pound trigger
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20" 223 Wylde DMR Fluted Rifle length Barrel, Premium Series in 416R Stainless Steel.
www.ballisticadvantage.com
