Anyone tried Sierra TMK .224 and .308 ?

[Kaiser.Shooter]

If anyone has tried the new Sierra ' s Tipped Match King projectiles .224 69gr and .30 155,168,175gr please share your experience, are they really better than SMK line?

[RonMexico]

Looks like better ballistic coefficient but I haven't reloaded in over 1 year. I think islandermike was going to try them out.

[Hoser]

I got 5,000 of the 77s in last week.

Doing load development tomorrow.

[esaabye]

I have been shooting the 77's for my 600 load. Seems to do fine, shoots about 3/4 minute higher at 600 then my normal 77's. I tried them mag length but did not group well, ran them a bit long and they do fine. I'll spend some time this fall to work up a mag length load that shoots by for now I just leave it at 24.5 varget it hits in the middle.

[eneranch]

I've shot the 69gr TMKs @100yds; loaded to Mag Length with Varget, shot a ladder of 4 loads 3 shots each 0.1gr apart, all 4 were under 0.75". 24% better BC should make a big difference at distance; have yet to shoot them further.

[Tim K]

Any more updates? Hoser? I need to buy some 77's and am considering a switch to these.

[Hoser]

Not as easy to tune a load for and the old 77, took lots of messing around. Found one and it is excellent. And the bump in BC is a nice addition.

[eneranch]

Hoser - Do you load to mag length ??

[Hoser]

Hoser - Do you load to mag length ??

yup

[DocMedic]

Ok, just finished shooting two major 3gun matches using 69 grain TMK's. Info as follows

69 Grain Sierra TMK
Loaded at Mag Length
Brass was from Brian, one time shot processed for size and uniformity
loaded with 24.2 grains of Benchmark
2822 FPS coming from a 18" 1/8 twist barrel AR.
Rifle is zeroed at 300yards

I don't have test data anything closer then 300yards, but what I can tell you is my POA / POI with the 69TMK was the same as my Hornady 55 going at 3125fps at 300 yards. Shooting a 1x prismatic scope at 300 yards benched with bipod I was getting 1 MOA to 1.5 MOA consistently, none of the brass showed pressure issues. I just shot Fallen Brethren 3gun match in texas using nothing but them and target engagement where from 600 yards and in. They're at least 160ish rifle shots in the match and I could count on 2 hands how many extra shots I had to do for long range targets. those bullets worked pretty good and I will probably use them for all long range applications at major matches so as long as they have the same POA/POI as my 55 grains at 300 yards.