Registered User
As said, the 55gn would be better in a 1:10 or 1:12 twist... 1:8 is better for 69gns
(My shooting buddy bought a Remingtom .223 with 1:12 twist, and the gunshop sold him some 69gn ammo... they went through the target sideways at 25 yds!!)
Any medium speed RIFLE powder will do... Something like Ramshot TAC is what I use for 55gns, and Vhit N140 for 69gns... but check published loading data...
Daryll
Killer Vampire Lesbians on scooters
The shop has a 25m range, so me and a mate tried quite a few before I chose this. I know it's only 25m, but when I zerod it, all three shots went through the same hole, and the correct way aroundOriginally Posted by Daryll
Registered User
I have a Sako 75 in .222 with a 1 in 14 twist.. it shoots 55gn bullets, giving half inch groups at 100yards.. never tried a heavier bullet. Must be the quality of the barrel..
amc577
Registered User
1:8 will enable you to use and stabilise the heavier bullets 69,75,77,80. & 90 grain
N140 gives good results
Ball powders tend to meter consistently through most powder measures where as grain type not so consistently although the LEE perfect powder measure which uses a ‘wiper’ performs very well.
You may find seating the bullet off the lands 10-20 thou improves accuracy (you’ll have to try that out )
If a magazine fed rifle then watch out for over length(magazine) as they may not fit (to long) if set off from the lands .
Other than that a cracking round out to 600yds and beyond weather (wind ) permitting using the heavier bullets .
ATB
James
Killer Vampire Lesbians on scooters
The barrel is a stainless Sig Saur and is supposed to be quite good. We have a range not far away that offers up to 800m, so it would be fun giving that a go.
My friend Jon has already mentioned bullet seating depths, I'll let him help me experiment with that. It is mag fed, currently a big, daft 30 round one that just gets in the way, I have a ten round on order. I don't know if they'll accept the same lengths?
Lots of exciting testing to come
One of the Blackhand Gang
If you are new to reloading don't experiment with the bullet sitting close to the lands. This needs experience. If you get it wrong and the bullet is touching the lands it will put your breech pressures through the roof. There is also the danger of pushing the bullet back into the case that will also up the breech pressures.
Stick to factory loads and the recommended COL for now.
Stay safe and enjoy yourself.
Registered User
Bullet length ‘should’ be the same for both mags, this length will limit the max length of the cartridge & therefore the bullet seating depth unless you load one round at a time .The barrel is a stainless Sig Saur and is supposed to be quite good. We have a range not far away that offers up to 800m, so it would be fun giving that a go.
My friend Jon has already mentioned bullet seating depths, I'll let him help me experiment with that. It is mag fed, currently a big, daft 30 round one that just gets in the way, I have a ten round on order. I don't know if they'll accept the same lengths?
Lots of exciting testing to come
Let us know how you get on
ATB
James
Killer Vampire Lesbians on scooters
Powder query: Vectan SP powders are from SP2 (fastest) to SP13 (slowest), they list SP7 & SP10 for .223. SP10 is for bullet weight up to 55 grains with a starting load of 20.8 grains. SP7 is for bullet weight from 60 grains with a starting load of 20.1.
I have a nearly full tub of SP8, why isn't that or the SP9 listed? Is it unsuitable, or do those other two simply cover the range of bullet weights, so they don't bother listing this?
Registered User
As far as I can find out sp8 was developed for 9mm
There is not a lot of info on Sp9 for 223 that I could find🙁
I would suggest staying with a more known powder for 223 such as N140 as there is a lot more info on that available.
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