I Like this, looks better than the zastava syntheticMoved the 30-06 into a Butler Creek stock that I picked up for $50. at the Brooks gun show. It weighs a pound less than the Ram-Line. No recoil pad cuts weight.
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the grade of SS used in these class of rifles will still stain fairly easily if neglected.
A few questions:
Can you explain the different grades of stainless steel and which one was used in the Zastava? How does it differ from the stainless now used to make much more expensive rifles like the Kimber Montana series, for example?
Also, what do you know about the proprietary Remington coating that Zastava supposedly used on the stainless and now no longer can use...
Found some SS in 7x64 for $599...tempted if they really are dropping them...no use for that cartridge though as I have 7x57 and 7RM already.
Originally Posted by Rob View Post A few questions: Can you explain the different grades of stainless steel and which one was used in the Zastava? How does it differ from the stainless now used to make much more expensive rifles like the Kimber Montana series said:cant answer the first question but for the second Baribal and I gave you information on it. this is not supposedly it was the agreement-cooperation between remington and zastava. the deal is over: no more stainless until there is new tooling and knowledge in Serbia. if you want one get one while you found them otherwise you will have only your eyes to cry ...
Pretty crappy excuse there... I have 7X57, 7mm RM, .280, .284 and still bought an M77-RS MKII 7X64... smiley face, winky face....
Yes it's a pretty lame excuse I know, but I'm trying to be more sensible as I'm running out of "space" lol.
I have one Zastava M70 which does shoot pretty well, blued half stock version in 7x57, but I'd still give it an overall B- rating just due to the horrible inletting and some pretty rough tooling on some parts of the gun.
The SS ones with that matte finish and eyesore stocks are not high on my "need to have" list even for $6 bills. I'd rather get an old HVA for cheap and go at that with a new barrel, finish, stock etc then refit a new gun to my liking.
The Stainless steel used for guns / barrels is always of the 410 series (usually around AISI 416) which is of the Martensitic - Ferritic type as this steel can be tempered and hardened, as opposed to Austenitic steel series 300 which usually stays in relativeley soft condition, so it's uselesss for firearms making except some applications. And the Zastava SS barrels were not different, so they were made of SS416 .
Then, since the 410 series is Ferritic type, this means you need to coat it to use it outside, and like with any other firearms brand, the coating is all the secret. So, any SS barrel will actually rust.
Since Zastava did not win to keep the proprietary "patented coating" (Trinyte satin SS or Black) deal under judgement of the International Business Court (ICC), they are now unable to use it - and anyways, the chemicals needed to do it are not avaialable - other than from Remington.
BTW, Zastava standard barrels are cold forged Chrome-Vanadium steeel.
Thanks. This is useful information. I was also interested in the specifics of the proprietary "patented coating"...so its "Trinyte satin SS" ...I did google that and came up with this:
"....our patented TRINYTE Corrosion Control System. This proprietary process starts with a durable, machined 416 stainless steel barreled action which then undergoes a multi-step coating process, enhancing its corrosion and abrasion resistance to a diamond-like level. A base layer of electroless nickel plating is applied, followed by a satin-finished black PVD (Physical Vapor Deposition) layer. Though micro-thin, this protective barrier provides virtual elimination of corrosion and superior abrasion resistance, comparable to the Rockwell Scale rating for diamonds. All exposed metalwork wears the TriNyte finish � barrel, action, bolt, bolt head and trigger."
Not sure if it directly applies but its close. So they coat the stainless with a secret recipe.
I do know that there is no steel that won't rust given the right opportunity but I think stainless is still the best bet to slow rust down. On a three week hunt last fall my main hunting rifle (Kimber Montana, stainless in a synthetic stock) was exposed to all sorts of weather and abuse...rain, snow and mud, smeared with gritty wet sand, one side covered with blood which froze...and when the hunt was over and the rifle cleaned and oiled and put away, it still looked new. I have enough experience to know that a blue steel rifle in a wood stock would not have fared so well.
Still no reply to my original question about the statement "the grade of SS used in these class of rifles will still stain fairly easily if neglected." It implies that the stainless used in the Zastava, in "these class of rifles", is somehow inferior to the stainless used in an apparently better "class" of guns (Kimber?)....I haven't seen any evidence for this.
So yes, the 416 they use is lower grade then Crucible Steel 416R, on top of that they probably only use 416 for the barrel/receiver/and maybe the bolt, and a lower grade for the guts, trigger guard, etc.416R is a proprietary steel produced by Crucible specifically designed for rifle barrels. The main difference between 416R and standard 416 stainless steels is the addition of Molybdenum (which is present in 410 but not 416 stainless steels) and a lower sulfur content than 416 stainless steel (but still higher than 410 stainless steel). Crucible also states that barrels made from 416R may be safely used at temperatures as low as -40 degrees Fahrenheit. For more information on 416R stainless steel, please see Crucible's 416R Datasheet.
In conclusion, if you are in the market for a stainless steel rifle barrel I would offer the following recommendations:
Avoid lightweight or thin profile stainless steel barrels. This recommendation is echoed from multiple barrel manufactures due to the potential issues with temper embrittlement in martensitic stainless steels. The thicker walls of a medium, heavy, or bull profile barrel will strengthen the barrel and make up for the shortcomings of 400-series stainless steels as a barrel steel.
Avoid standard 416 stainless steel barrels. 410 and 416R stainless steels both have a lower sulfur content, making them less prone to developing sulphide stringers which may result in catastrophic barrel failure.
If the rifle will never see freezing temperatures, 410 stainless steel will likely be your best option. 410 stainless steel has the lowest sulfur content of the three grades we discussed, and will be the least likely to develop sulphide stringers. Avoiding sub-zero temperatures and using a barrel of adequate thickness should also minimize the temper embrittlement issue.
If the rifle may see freezing temperatures, 416R stainless steel will likely be your best option. 416R stainless steel is rated for use at temperatures as low as -40 degrees Fahrenheit and has a lower sulfur content than standard 416 stainless steel. However, you should still ensure the barrel is of adequate thickness.
The big problem though is that it is not as free-machining as the 4000 series grades so generally sulphur is added to alleviate that problem. What you then have is a microstructure with "sulphide stringers" in it that has been tempered in a bad tempering range so the impact resistance of the steel is very poor. Failures happen, and are not really wide-spread, but I will not buy a 416 SS barrel for that reason. The AISI 4140/4150/4340 grades do not have this temper embrittlement problem, and show superior impact resistance when tempered to about 30 HRC. They are cheaper to buy in a production rifle. One who takes good care of a firearm will never have any major corrosion and wear issues with the 4000 grade steel barrels anyway. And if you do use it an awful lot and it begins to wear out, well then you got your money's worth from the product, just buy a new barrel. Nothing lasts forever anyway. As a note, AISI 410 SS is a better alternative to 416 SS as is does not generally have the sulphur issue, however the temper embrittlement issue is still a concern.
Here is my opinion: Unless you are competition shooter, buy the non-stainless grade barrels. If you are a professional match shooter find a good AISI 17-4PH barrel as it is a much better choice if one wants corrosion resistance, wear resistance, and impact resistance.
For my money and safety, it is a 4000-series material.
Yeah... the platform is the thing.
Being a Ruger fan I couldn't turn down a New in Box M77-RS MKII in 7X64 from a 1999 run that was destined for Europe, but never shipped. The fit and finish is excellent, the bluing deep and rich. As you can see from my post above, I didn't need another 7mm either but couldn't bring myself to turn it down.
It is the bottom rifle in the picture below, imported from a collector friend in Texas;
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