Thread: 7x57 subsonic

If you can shoot them in the back of the head into the Atlas, that will drop them in a heap, without the fear of a bullet over-penetrating and ending up in the neck or shoulder.

Originally Posted by Micky Duck

seriously recomend you hit Robert up for some of his cast pills.... they SHOULD be slightly safer as less likely to exit and will do some expansion at subsonic speeds....speaking of which,if you go just above subsonic,eg case semi full of TB,same volume,or bit less than your normal supersonic loading,, they will expand quite a lot and the energy will be a lot higher and give you slightly more margin for error...the noise through suppressor will still be similar to 22lr if not slightly less.

im not sure thats going to work out safer, I dont use the ones I have because Im concerned they will splash on contact with the skull rather than crack it
its probably all in my head but the soft cast (i have hollow points) dont give me confidence on cow sized foreheads
probably be fine but id take literally any jacketed bullet or fmj in preference

Just to try and get the thread back on the rails here, does anyone have any load data.

Originally Posted by longshot

Just to try and get the thread back on the rails here, does anyone have any load data.

I would us any load data for a similar bullet weight in a 308 as a start point. Use a chrony. I found that the shotgun type powders give much lower ES than Trailboss which seems counter intuative for a powder that better fills the case. If you have TB load 10 gr and see what velocity you get. With subs I found that velocity and powder charge follows a close linear response - because we are not looking for a max load and pressure signs. I would load one at 10gr and then go up or down from there. If you get them at 950 - 975 they will be very quiet compared to 1050

Originally Posted by longshot

Just to try and get the thread back on the rails here, does anyone have any load data.

just make one walk outside and fire it into the ground on your lawn

adjust if necessary

the best you can ask for is a starting point which would be 10 grains if you want to be safe and probably 8.5 gr if we had to place bets

with unknow bullet(major problem) and unknown cases(minor problem) capacity isn't known
changing from win to fed primers messed my sub load up

subs are the only thing Iv found this far that have benifitted from a crimp if you happen to have dies that do that
reduced the group from 4 inches at 30m to an inch with lead cast

52.2 grs of water for the 7-08 and 55.6 grs for the 7x57

so its basically a 308 case capasity pushing basically the same weight as my ballistic tip load which I used 8.2gr TB on
fed primers/165ballistic tips/ppe cases

Originally Posted by Bill999

im not sure thats going to work out safer, I dont use the ones I have because Im concerned they will splash on contact with the skull rather than crack it
its probably all in my head but the soft cast (i have hollow points) dont give me confidence on cow sized foreheads
probably be fine but id take literally any jacketed bullet or fmj in preference

well the 151s pass through head of sheep or goats,I retrieved only 1 round from about 20 used on house muttons....I went off idea of subs completely,as the .223 with supers is just so much more emphatic /reliable if my piss poor aiming is slightly off,the lack of shock/transpher with subs make your aim very important. at 15 yards and under it wont be an issue,,,my feral sheep often stretched it out to 75yards,and Ive sold both my rifles in .308 calibre now so cant go that way even if wanted to continue.

Originally Posted by Micky Duck

well the 151s pass through head of sheep or goats,I retrieved only 1 round from about 20 used on house muttons....I went off idea of subs completely,as the .223 with supers is just so much more emphatic /reliable if my piss poor aiming is slightly off,the lack of shock/transpher with subs make your aim very important. at 15 yards and under it wont be an issue,,,my feral sheep often stretched it out to 75yards,and Ive sold both my rifles in .308 calibre now so cant go that way even if wanted to continue.

yep iv found subs just keep trucking when they have a bit of weight behind them im happy on sheep/goats pigs to use a 22 up to about 60 pound but after that id much prefer the bigger bullet and the ability to go in the ear hole if a side shot presents
I had one failure to penitrate on a large pig at close range (7m) with perfect conditions with the 22lr sub which pushed me to step up to 30cal

no way id take that chance on a pet bull just based on skull thickness and from experience if the first shot doesn't work you have a running animal
they scream then they run as fast as they can

thats the senario that made a good mate(butcher) change up loads in .357mag for home kill....a couple of not quite right incidence made looking at different ammunition the right thing to do....

Originally Posted by longshot

Yep hoping to roll the dice on load dev and get double sixes first roll, if not then we get some more projectiles and do it the traditional way.

These are for the annual homekill of a tame steer on a lifestyle block. The problem the last two years is that the cattle have somehow had an awareness of what is about to occur and gone from tame to gate wreckers as soon as a stranger with a rifle gets within half a kilometre of the property.
The load only needs to be accurate enough for 15m shot. If I get it right I just need three to prove stability and subsonic velocity and then three more to check POI with suppressor in place. That will leave enough for >a decade of homekill.

You will have a stability problem with the 175 grain at subsonic velocity the 160 grain 7mm I sell is very marginal at 1000fps it is starting to tip at 50 metres the 175 are quite a bit longer,
I have 19 of my 133 HP 7mm left if you to try them just pay for postage, 8 grains of Trail Boss gets them to 1040fps in my Sako 7mm08 7.0 grains comes close to sticking them the barrel
in the 7x57 9.0 grain should ok to start with. Ph 021 02724412 if you want to chat about them, Robert.

Originally Posted by Micky Duck

thats the senario that made a good mate(butcher) change up loads in .357mag for home kill....a couple of not quite right incidence made looking at different ammunition the right thing to do....

i certainly wasnt impressed when the home kill guy shot mine in the sinus then proceded to tell me why while the cow is standing there blowing blood out of its nose

had to tell him to shut his mouth and shoot it properly immediately

oh its just come back from the gunsmith bla bla fireing pin clean bla bla

shoot the cow you just grievously injured you pillock luckily for him it just stood there

i still think 22magnum is very marginal but it obviously does the trick and had done well every other time

Originally Posted by shooternz

You will have a stability problem with the 175 grain at subsonic velocity the 160 grain 7mm I sell is very marginal at 1000fps it is starting to tip at 50 metres the 175 are quite a bit longer,
I have 19 of my 133 HP 7mm left if you to try them just pay for postage, 8 grains of Trail Boss gets them to 1040fps in my Sako 7mm08 7.0 grains comes close to sticking them the barrel
in the 7x57 9.0 grain should ok to start with. Ph 021 02724412 if you want to chat about them, Robert.

You'd be silly not to take this offer up.

you have to be pretty confident with a 22rf.. no room for error , I used a Hornet no probs , had a 223 richoche off the skull at about 30 ft , ruined the steak and knocked my confidence a bit ..