of Tac. (For 55 Gr FMJ, Hornady FMJ is better accuracy-wise than most.) It's the same powder measure as your 550. Good accuracy (sub MOA) and decent velocity for me out an 18" 1x8" AR. 5 EDITION 7.0 GOOD HABITS n Handloading is a fun and safe process when simple safety guidelines are followed. 50-grain bullet data. The Ramshot load data uses a WSR primer, and I still haven't confirmed if the 450 is a hotter primer. I also think that, in this 'TACticool' generation, a lot of TAC users shoot 55Gr FMJ or M855/SS109 bullets, for which the accuracy standard is 1+ MOA, at best. Now in 2012 they omit the Nosler BT but do list the Hornady 50-gr V-max at max 25.0 grs (3391 fps @54990 psi.) For your .223 bolt gun, you may have a slower rifling twist than is necessary for 69Gr to 77Gr bullets. I haven't had a chance to chronograph these loads yet. I use 22.0 grains of TAC under 55-gr Hornady FMJBTWC bullets when making plinking ammo that is not intended for great accuracy. In my 16" Colts with 55 gr bullets about the best load I found was 24.5 gr. The most obvious areas for concern are open flames and heat sources. Re: Ramshot Tac in your 223 My comp .223 load is 77gr. In 2009 they published Nosler 50-gr BT max load at 27.0 grs (3448 fps @54961 psi.) I shoot out to 400 yds for match stages with an occasional 500/600 yd shot (3 gun matches). I was looking at the Ramshot Load data & I have been loading with Tac Powder with in the .223 load data & stumbled across their load data for the 5.56 pressure data & since I have some of their X-Terminator , which is said to be good for the 5.56 loads , I tried some out the other day while doing some Chrono testing for the 25-45 Sharps . SMK over 5.56MM pressure Varget VERY well. Mixed brass that I still need to sort. To develop the accompanying handload data, a Savage Model 10 Predator Hunter Max was used; it features a 22-inch barrel, a 1:9 twist rate and was fitted with a Nikon 3-12x M223 scope. I have Ramshot TAC powder published load data from both 2009 and 2012 (ver 4.5) and noticed a big change in 223 Rem. The 5.56MM case is small and therefore builds pressure rapidly. But this 18" Krieger 1x7.7 prefers the TAC load. There has been considerable commentary suggesting that the 5.56 NATO case has less capacity than the .223 Remington, and therefore loads must be reduced accordingly. It is a very, very light load, but it cycles all ARs that I shoot. So far TAC has been ok for me regarding accuracy. I found that H335 has it over TAC regarding accuracy. .223 Remington (Ramshot Data Edition 4.5 - 2011) reloading data with 128 loads. I load on Dillon presses -- a Super1050 for .223. Oddly enough, it's a 24.5 grain load too! Even more accurate than the 24.5 gr loads listed. On Varget: I have a 24" 1x9 chrome moly barrel that shoots the 77gr. .223 Remington (Ramshot X-Terminator Data 2013) reloading data with 20 loads. I believe 25.0 is the MAX load for .223 Rem but 5.56 allows up to 26.2 so I'll probably stop increasing at around 25.5 or 25.7 gr. The load prints 1.5 to 1.75 inch groups at 100 yards in my 1/7 to 1/8 AR rifles, which is probably the accuracy limit of the bullet itself. Based on the information I got from the chrono, I went ahead an bumped my charge to 25.0 gr Ramshot TAC and test fired about 10 of those, but not over the chrono yet. The components I'll be starting off with will be RMR 55gr FMJ-BT, TAC powder, and CCI 450s. SMKs over 24.0gr. If your TAC loads look a little too hot, back it off 0.2 gr. Using bullets from Nosler BTLF, SinterFire WTP, Nosler B-Tip, Hornady BT-FMJ, Barnes MPG, Hornady V-Max, Hornady HPBT-M. Powders include Ramshot
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