175gr. SMK outta a 12" twist

[scissorhands]

I'm closing in on my SMK 168 grain load and was going to start working on a longer range load. What does the 175 grain SMK do out of a 12' twist? Should I scratch that 175 and go with a 155 grain and work from there?

Rob

[scissorhands]

or do I need to try a ballistic tip type bullet (amax)?

[tgridley]

I think the twist will be to slow for the 175's.

[scissorhands]

I think the twist will be to slow for the 175's.

I agree, but what happens to the bullet? Does it fall on its face and start tumbling at the same distance as the 168 grain?

[Jaeger09]

Go check out some of the long range shooting/sniper forums. Nearly all of the posts I've read have all had reall good success with the 175 outta a 1/12. Many of them infact have found better groupings with the 175 over the 168. I've been looking at the same thing for a future rifle purchase. I haven't had any issues of 175 SMK outta my m1a.

[cwill37]

175 Sieras and 178 A-Max work great in the 1-12 twist barrel of my FN-SPR A1. Sub 1/2 MOA all day long.

[scott123456789]

I loaded 178 amaxs over 44.8 grains of gadget at 2.835 coal sub 1/2" groups

[cerralvo78]

It will be ok!!
175 SMK,COAL 2.810", Barrel 24" @ 2560 fps!!
2.0" 3 shot groups @ 311 yards

Miller Stability : 1.69

[KHoes203]

Mine likes 178 a max out of 1/12. Have not stretched its legs out yet to beyond 350 but so far sou good.