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What say you all? Looking around the internet there seems to be two different data sets for each projectile weight, one being very anemic and one with a bit more spice. I'm guessing there's a lot of data out there that's been developed for old military actions etc much like the 6.5x55?
Rifle is a BSA viscount. Would it be safe to assume it will handle "modern" pressures?
Seem to recall I ran 49gn 2209 behind a 140gn prohunter in my viscount... can't lay my hands on my 7x57 data so don't quote me! I do recall it hated all BT projectiles, FB shot well.
@Ryan_Songhurst if it's in good condition you can pretty well use 7mm08 data :thumbsup:
Win760 is the go to powder
51 of 2213sc behind 150 Sierra.
I run 45.5 gn AR2209 behind 140 gn Rem corelokt, out of Rem cases.
Hi Ryan, I only now use the 130gn Speer and 48 gn of 2209.
42gn's 2206H with 140 SGK for 2714fps, or 47gn's 2209 with 150 Corelokt. BSA Viscount.
bush load=big fat flat or round nose load toddling along.....suit yourself for out in open. youve used .270 for years,its not a HUGE amount different,little slower but with vastly more projectile options,assuming you can find some.
@Ryan_Songhurst. I owned and loaded for a Hunter, similar if not same as Viscount. Longtime ago now. No problems that I recall. Don't have any data noted but from memory was always close to max from reloading manuals published in the 70's nd 80's. My current loads have been developed for Ruger M77 Mk1 with a Shilen barrel. Usual disclaimers apply.
140 Accubond 47.7 N204 2700 fps, 140 Nos BT 48.9 760 2830 fps. Rem 150 coreloct 48 2209 2700 fps. All happily under minute of angle, although the Rem's can be a bit of a bitch in regard to projectile consistency. I've found the most consistent powder to be W760. Am currently working up a load with H414, some say it's same as W760 but that's above my paygrade. I've pushed the envelope a bit with the 140 Nos Bt, simply trying to get as much velocity as I safely can and still under MOA. The aim to get the projectile to perform at longer range. I use F210's with all powders but have also used Winchester with no noticable difference. 7 x 57's an awesome cartridge.
Found my info. 49gr with 140 BT gave great accuracy and around 2900fps in a Viscount belonging to a mate. I've yet to load for mine & check it's liking.Quote:
Originally Posted by Mathias
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52 grains of 760 W behind a 139 hornady interlock flat base in my discount really gets it humming, very accurate load. Like someone else said flat base bullets only it seems work in those BSA otherwise they throw them all over the place.
Greetings,Quote:
Originally Posted by Ryan_Songhurst
The Viscount will definitely handle modern pressures. When sorting out loads for the 6.5x55 I used .260 Rem and 6.5 Creedmoor data to establish maximum velocities and then adjusted for the extra case capacity. You could probably skip the last step. Next I worked up to that velocity which will probably take a little more powder than the 7mm-08. Ken Waters stated that he could not achieve 7mm-08 velocities in his 7x57 rifles without excessive expansion which I think was due to the latter cases being softer. Feel free to PM me if you want some worked examples.
Regards Grandpamac.
I have an older Interarms Mark X, barrel shortened to 21in and DPT Suppressor. Two successful hunting loads.. first is Remington 150gn Cor-Lokt, SP FB, with 49.5gn RL19. Average 2650fps. Second, Speer 130gn Spitzer SPFB, 52.0gn RL19, 2750fps. I also made a load up for an old Govt Culler for his BSA Hunter that has many miles on the clock. He wanted to emulate his factory ammo. He was printing clover leaves at 65m with 139gn Hornady Interlocks over 37.0gn 22065. Not chronoed. Said after a few groups he had never got as good with factory ammo.
Graham Henry wrote an article years ago (40) about the 7x57 - I think using a Hunter.
Anyway I distinctly remember him getting 2,800 fps with a 139 grn bullet using W760.
I have an old Nick Harvey hand loading manual here and he quotes a max charge of 50 grains of W760 for 2,900 fps from a Brno ZK. Sounds pretty warm to me, as a lot of Harvey's loads seem to be.
Treat as a guideline and not a rule.
https://uploads.tapatalk-cdn.com/202...c45812b5ba.jpg
I put 4 in one hole but not 5. My error. WW760 is the go in the 7mm as Mathais et al state. Lots of variations in max load for ind rifles due to brass and chamber / throat dimensions.
48-50 gns behind a 140 will normally get you around 2800 fps.
760 is good with 154/160s too.
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Thats good.Quote:
Originally Posted by Dicko
You know don't you that every time you do that it means there are 5 less primers in the world. Just say'n. :)
No shortage of anything shooting related here Thar, only the time to engage in it and it’s too hot, re meat spoilage and snakes.
Ive had a number of 7x57, still got a M70 and a double rifle in 7x57R, miss the brno, ZG47.
I have always run, 160 gr/162 gr with 47-50 gr of 4350,4381 for 2650 ish, depending on barrel length and throat,
50 gr R19 has a 150 gr Balistic tip humming along in the M70, still prefer the 162 A-Max or a 160 gr soft point speer for performance.
RL19 would be my choice after WW760. In my experience 2650 fps with a 160 is top velocity and that same 48-50 gns of 760 is needed to obtain it. Would be a higher pressure load than the 140 load (same charge wt).
Just out of interest, what was the speed on the old school heavy projectiles they used to use in the 7x57
Ditto w760. I'm using 50gr with 139gr interlocks
Depends how far back in time you go I would guess. My uncle ran a BSA 7mil for Tahr culling in the 60's and said that the best ammo was 'Imperial' out of Canada. Think it was 140 grn 'Cone point'. Would flatten a Bull or big stag on the spot.Quote:
Originally Posted by csmiffy
Anyway they tried to duplicate the imperial stuff with reloads but couldn't. From their comparison of known loads from tables and expected speeds ( no chronograph ) the conclusion was that the Imperial loads were at about 2900 fps for the 140. Uncle says that he used fast 130 grn reloads as his main loads when he used up the 2000 rds of imperial
I ran a crony on federal blue box, of 175 round nose, in my M70 7x57 and got 2250fps,Quote:
Originally Posted by csmiffy
winchester manual #13
7mm mauser
125grn projectile 760 powder 48.7 grns for 2885fps 43500cup
150grn projectile 760 powder 46.5grns for 2660fps 43500cup
175grn projectile 760powder 44grns for 2400fps 44500 cup
now seeing 50 grns as a load for 139 got me thinking
the .270w has 52 for the 130grn and 49 for the 150...split down middle is 50.5grns and 49000cup WAY HOTTER than the above....bigger case,smaller hole
Yup and that would be the US anaemic version of proper euro loads.Quote:
Originally Posted by southernman
The 8x57 is a classic example of that. Take nearly 250fps off between euro and US loads for that @Micky Duck yip probably because 270 has 10000psi salami rating over the 7x57. Late model modern rifle it should should be the same yeah?
Tried them all over the years, starting with the 130gr Speer flat base that killed everything I hit with it - then went up the scale through the 139/140's which again killed everything, then the 150's - settling on the 154 Hornady interlock and the 150 Core-loc.
Then someone gave me some heavy German RN's when I ran out up by Taupo and they impressed the shit out of me, so I bought a few packs of 173gr Kynoch's I loaded up as I couldn't get the German ones.
Then I dropped back to 160gr Speer spitzers and stayed around there, my current loads being 162gr Hornady Amax (because I bought a few)
I used Norma 203 then on to American powders when that dried up - IMR3031, 4895, 4350 and a year or so ago stocked up with AR2209.
I've been over 50grs with 4350 and the 162gr, but dropped back to 48.0grs as I like a bit of life out of my cases - I retire them after 25 reloads and start a new lot. I neck anneal every three firings and by the time I get to 25 'loadings', I only have half a packet left as I didn't always find the ejected ones.
My gun is BRNO 600 and 7 mil is all I really ever used after I found out there were other guns other than the .303.
All my hunting is 'bush' and I wouldn't have a clue what speed my bullets are doing - and it's never worried me - it's killed everything I ever hit right regardless of what bullet I was shooting.
My longest shot was a stag, I gave daylight over his shoulder ............. and he ran away. And I chased him from the other side of the valley - and he ran right up and I whacked him in the neck at ten yards. I could hear him puffing from 40 yards away as he ran straight toward me - he was buggered, his tongue hanging out.
Cleaning him out I found an 'in' and 'out' hole slightly high through the boiler room, so fished through the 'vitals' and couldn't find anything. That was the most expensive bullet I ever shot - a 150gr Nosler partition that pencilled through without hitting anything .......... figure that.
My manuals are probably getting on a bit - my Norma being 1965, Speer 1966 and the Lyman has the cover gone - it's the 45th edition.
The 7x57 is probably no better than a bunch of other cartridges - but it's always done what I wanted it to without booting me around too much :)
Other thing when I buy components I buy 'large' because over the years stuff dries up - and you can't get it.
I have bullets here I payed $4.55/100 for - that's the 130 Speers I never completely shot up.
Not a BSA but in my old Winchester model 70 7x57 I ran 139 gr Hornady interlocks and those projectiles killed well everything from goats, fallow, sika, reds and tahr
As for powder, I ran the discontinued AR2206
Book data is all over the place due to the old / early Mauser 94 ? Rifles that are out there.
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Forgot to mention I was shooting those BRNO loads out of my BSA Viscount - it's a strong gun.
The Mauser '98 is probably considered the 'strong action' out of the Mauser's - the 7x57mm being designed in '92 and first chambered in the '93 Mauser. I think the Rem rolling blocks were chambered for it as well - the 'piddly loads' probably intended for them.
My mate had a Spanish '93 in 7x57 and he shot full blown loads out of that - and that might have been foolish, but he never blew it up.
I have had several 7x57's. One was a BSA Viscount.
The book loads for the 7x57 are low due to the old rolling block rifles that might still be floating around. (Not the bolt actions.) For modern rifles I start with 7mm08 data. (And even then with the 8% larger 7x57 case, you will get less pressure)
With the 7x57 the throat will be different with each rifle manufacturer, some are really long (like Ruger) and others are not. Some you cant touch the rifling with a 140 grain bullet. So what is good in one rifle will be totally different in another.
I use AR2209 powder and with this powder you should be able to load up to 2850-2900 fps with a 140 grain bullet and a 22 inch barrel. So while using a chornograph Just keep adding powder till you get there. Most rifles will do it with 50 grains others may need more because they have a longer throat.
With a 154 grain / 160 grain you can get 2650fps.
I have reloaded the 175 grain round noses years ago at 2400fps. I dont think you can buy them anymore through.
about plurry time you chimed in....