hello all I am looking for advice on some new 223 match loads last year I shot 77 grain Nosler custom comps over 23.5 gr of 8208 powder and a CC I number 450 Magnum primer this load Shot well but the wind really beat up my 77 grain bullet. A friend of mine has 80 grain Sierra MatchKing that he is willing to sell me for a very good price and I would like to have them for my new Lapua brass he also recommended that I try reloader 15 he thinks I will get higher velocity with that powder then I currently am with my 8208 my rifle is a savage model 10 with a shilin 26 inch stainless match 1:8 twist I think I'm going to have to get some pretty high muzzle velocity used to stabilize an 80 grain bullet all the way to 600 yards will reloader 15 at 24 to 24.5 do this what are your thoughts and what loads are you using
I don't think you're going to get the 80's to stabilize. Think they need a 7 twist??? Try the 75 amax or the 77 Sierras. A bud used varget and 69 sierra match kings to win a bunch of 500 meter groundhog matches.
I was wondering what point you go past the 8 twist to 7. I built a full blown out custom couple years ago in a 22-243 with 8 twist. It really like the 75 a-max. I broke it out last year groundhog hunting and did well with them. I tried the 80 berger when I first got it and it didn't do quite as well.
I have a 8 twist 22x47 Lapua and I shoot the 80 gr. Hornady a-max at 3174 fps and they shoot the same as the 75 gr. bullets. But at .223 velocities a 8 twist may not be enough but I would try them to see how they shoot.
for you guys wondering about 8208 powder it meters very very well is very temperature insensitive and is not very dirty after a 66 to 70 round in an F class match my barrel was not as dirty as I thought it would be clean up was easy I've heard the problem with 8208 is pressure spikes happened very quickly a couple tenths of a grain over a safe load may give huge pressure spikes without warning. I have not had pressure problems with my over max load but i am running a bolt gun and my rounds are seated long due to my wylde chamber. People say 8208 is "spooky" one load is safe the next with just a couple tenths more powder may be blowing primers. PLEASE BE CAREFUL. Any advice on re loader 15 and 80 grainers?
The box of 80grain sierras say 7-8 twist required. So if i follow their advice i should be ok. I guess a good dose of rx 15 to keep speed up and i should be good. I will follow up as i start load development to keep you guys posted