308 190 grain 1:12 twist recipe?

MackForce

MackForce

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I know. This is probably posted somewhere in the forums. But if you wouldn't mind helping out a new reloader (as in haven't reloaded any yet), find out where I should start. I will will have to begin sourcing what I can sooner than later.
I'm trying to find a starting point with a 190grain. 308 bullet in a 26" barrel with a 1:12 twist rate.
Any advice would be appreciated. I've been waiting to get started and thought I could save some time and money with some free advice.

Thanks,

Mack
 
1:12 twist is a bit slow for a 190gr bullet , it could work but you need to push it fast with the right powder and a lot of free-bore to to seated on the long side (but not for inexperienced reloader)

IMHO 175gr would optimum for 1:12 twist 180 gr to 200gr for 1:11 and 1;10 for 200++

after that what 's your shooting purpose ,hunting or paper and at what distance and your rifle

regards
Mike
 
190 gr in 1 in 12 ROT could be hard to stabilize, R17 could be of some help as it buy you extra velocity and is efficient with heavier bullet...
I had great success with 208 gr Amax and R17 out of my Nemesis 20 inch barrel ( 1 in 10 ROT ), i could push them just south of 2600 fps... JP.
 
I have loaded 190gr SMK's over Varget and CCI200 primers in Lapua brass with some success. I don't recall the exact powder charge at the moment, but I was getting a velocity in the 2450-2500 fps range. As others have mentioned, my barrel is a 1:10 ROT so I didn't have any issues with stability.
 
1:12 is plenty fast for a 190, unless you go to a VLD bullet.

I shoot 190s out of a 1:14 all the time.

Start with 48 gr of 4350 and work up in 0.5gr increments. make just 5 of each. The first test is to test accuracy and to make sure the holes are round.

You may find the holes start off egg shaped and get round as velocity (RPM) increases.
 
Ganderite said:
1:12 is plenty fast for a 190, unless you go to a VLD bullet.

I shoot 190s out of a 1:14 all the time.

Start with 48 gr of 4350 and work up in 0.5gr increments. make just 5 of each. The first test is to test accuracy and to make sure the holes are round.

You may find the holes start off egg shaped and get round as velocity (RPM) increases.
Click to expand...

Yes, 1-12 twist is plenty fast in my 308Win Sportco 44 rifle for Hornady 190gr HPBT bullet out to 500+m.
Friend of mine used the same bullets in his 308Win target gun with 1-13 twist barrel with no problem at all.
 
My best grouping loads with 1 in 12 ROT 308 rifle are without doubts, lighter loads...
Heavier loads were shinning in many rifle with 1 to 11.25 and 1 to 10 ROT, i never experienced heavy loads in 1 in 12...

FNAR Competition 1 in 12... 155 gr Hornady Match, Varget, BR-2... Best grouping.
Scout Steyr 308 1 in 12... 167 gr Lapua Scénars, R15, BR-2... Best grouping.
 
Thanks for the info. Ive been reading up on guys shooting 190 gr out of 1 in 12 barrels. I have some books on order and I will test that out.
Im trying to work a hunting load with the 190s but may just use the 180 gr that is more common.
I wanted to go heavier for this certain purpose.

Thanks again all
 
Yup, bad info above. Something a new reloader needs to do. ALWAYS double check info.

One of my loads is 208gr AMAX out of the 5R (11.25 twist). No issues with stability to 1200 yards. (46.0 gr of RL17) Moderate load. Start LOW and work up to ensure it's safe in your rifle. These are loaded at over 3 inches, but I also crush in mag length as well.
 
Shibby! said:
Yup, bad info above. Something a new reloader needs to do. ALWAYS double check info.

One of my loads is 208gr AMAX out of the 5R (11.25 twist). No issues with stability to 1200 yards. (46.0 gr of RL17) Moderate load. Start LOW and work up to ensure it's safe in your rifle. These are loaded at over 3 inches, but I also crush in mag length as well.
Click to expand...

This was more what I was looking for. I appreciate all comments though. Although I do not have the 5R rifling, its a close twist to the 1:12.
I just picked up Rem 700 on the EE and was looking to hear from guys who were hitting groups with the 1:12 rot with something larger than 180s. I will be using this as a hunting rifle mainly and was looking for a heavier load if I could work it out.

Thanks again
 
Personally, I'm recommending '0' load data. But, I am recommending a book, it's quite dated but still engaging IMO.
'Pet Loads' with give you a good base idea for various older loads, no RUM's & such though.
If you are the kind of person who can glean info from pure data, don't bother with it. A new loader who isn't wired to crunch numbers, it'll keep you entertained while teaching various concepts and methods.
But quite outdated if one considers the calibers & powders used as compared to what is out there now. But entertaining at the same time as informative, that's a tad rare in the reloading world. Usually numbers heavy and sometimes mind numbling is the order of the day in reloading books I find.
 
Is this a Remington 700, or some other rifle?

Which "190" do you have in mind - a hunting bullet of some sort, or one of the match bullets?

1-12" twist is plenty fast to stabilize a Sierra 190 Match King. If you have a Remington 700, this can be a very useful bullet to try.... Remington's throats tend to be very, very long, and oftentimes it is not possible to load 155/168/175 Sierra Match Kings long enough to come close to touching the lands. The Sierra 190 HPMK has enough shank length that you can load them to be 10 or 15 thou off of the lands even in a silly-long Remington factory chamber.

Back in 1994 a friend of mine used Sierra 190 Match Kings in a Rem-700, with Fed-210 primers, Winchester brass, and 41 grains of IMR-4064 (do confirm this with a load manual), and had very good accuracy from 400 yards out to 1000 yards.
 
rnbra-shooter said:
Is this a Remington 700, or some other rifle?

Which "190" do you have in mind - a hunting bullet of some sort, or one of the match bullets?

1-12" twist is plenty fast to stabilize a Sierra 190 Match King. If you have a Remington 700, this can be a very useful bullet to try.... Remington's throats tend to be very, very long, and oftentimes it is not possible to load 155/168/175 Sierra Match Kings long enough to come close to touching the lands. The Sierra 190 HPMK has enough shank length that you can load them to be 10 or 15 thou off of the lands even in a silly-long Remington factory chamber.

Back in 1994 a friend of mine used Sierra 190 Match Kings in a Rem-700, with Fed-210 primers, Winchester brass, and 41 grains of IMR-4064 (do confirm this with a load manual), and had very good accuracy from 400 yards out to 1000 yards.
Click to expand...

Yeah its a 700. Ive decided to stick with a 180 grain for now. looking for a new rot in a new barrel, if i push this further.

thanks all
 
In my old precision rifle in .308 with a 1-12 barrel, my most accurate load for long range was a 190gr Hornady HPBT with H-380 powder and Winchester primers. The old Lyman manual also lists this powder as the "accuracy load" for that weight of bullet. Look up the powder weight in a manual.
 
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