|
Post by HMC710 on Jan 23, 2019 22:45:58 GMT -5
Lots of questions about the new Winchester 350 Legend. Main one is how long is the case? Maximum is 1.6 and some states used to have a case length limit, but I haven't kept up with things lately.
Someone mentioned case of 1.71", but until we see the SAAMI specs, we'll just sit and wonder. Winchester has reported brought out some new bullets as well in the 180 up to 265gr. Will be interesting to see what twist they chose...….
Pile on if you have real data......
|
|
|
350 Legend
Jan 25, 2019 14:37:31 GMT -5
via mobile
Post by jakezilla on Jan 25, 2019 14:37:31 GMT -5
Winchester's site is updated with some info, 1.71" is listed. winchester.com/350-LegendI was really excited to get a caliber between 300blk and 458Socom to get heavier subs and higher capacity. But alas, CMMG has stated that reliable feeding is tough and they are going with 10 round mags. "We have found that the 10 round mags work the best, the round tends to feed more reliably out of the straight body mag and does require a modified mag." www.ar15.com/forums/General/Winchester-s-new-350-Legend-cartridge-35-223-AR-compatible/5-2186483/?page=5Maybe the new Brownells 25rd straight mag will allow higher capacities?? Also, the heaviest sub announced is 265gr. For me, it doesn't offer anything that 10 round 458Socom (or 450BM if you need straight wall) or 250gr-ish 30 round 300blk does.
|
|
|
Post by HMC710 on Jan 25, 2019 22:26:51 GMT -5
We have a 300gr cast load for our 358 ARMax if that will do it for ya I've also heard a 1:16 twist for the 350L any confirmation? Would be interesting to see if any body taper.....
|
|
|
Post by HMC710 on Feb 5, 2019 22:45:48 GMT -5
Saami has made it official! saami.org/wp-content/uploads/2019/01/350-Legend-Public-Introduction.pdf350-Legend-Public-Introduction.pdf (80.19 KB) Per the print, our 358 ARMax should work nicely with the new 350 Legend by chambering a bit deeper. Of note is the range of chamber acceptable depths: 1.710 - 1.720, and about .010" of case taper. It will be interesting to see how the reloading dies end up: tapered or straight.... With our ARMax, Saami is 1.605 case length and we cut our chambers to the negative side of that as most people think the case length is 1.600" When a heavy crimp is put on a case, that shorten things up even more, so shorter chambers are better than longer....
|
|
|
Post by HMC710 on Feb 10, 2019 20:37:52 GMT -5
Talked with Green Mountain this week and the do plan on running 350 Legend blanks with the 1:16 twist. That's a good idea in my opinion even if you want to run a Maximum. Stay tuned, but it looks like we can just cut a bit deeper and be good to go. Would like to get some real field data on factory guns and see how things are working out.
|
|
|
Post by paulsblackrifles on Feb 12, 2019 9:02:23 GMT -5
I know the 358Amax is based on the 223 case, what about the 22Nosler case? I know, the cases are not a cheap to buy. But the larger case may get rid of the long straight case issues.
Paul
|
|
|
Post by HMC710 on Feb 12, 2019 20:43:47 GMT -5
To get rid of the straight wall, we use our 35ARem. It is based on 762.39 brass and cut down 35 Remington dies. Yes, it outperforms the 357/357 Max - Legend..... The Nosler is basically a 6.8 case with a .223 rim. The larger dia case would require a slight neck to get the 35's to seat. And then not meet the State's definition of Straight Wall cases....
|
|
|
Post by 22boomer on Feb 13, 2019 8:54:28 GMT -5
I just found out about this new cartridge here! The 350 Legend will work in an AR-15 if a correct magazine is made? Green Mountain is going to produce barrels for this cartridge -- I would like to make up my own AR in a field weight rifle and this cartridge does sound interesting. In my state 5 rounds is all that's allowed in the rifle for hunting so I hope somebody makes a magazine with this capacity.
|
|
|
Post by HMC710 on Feb 13, 2019 23:11:32 GMT -5
Yes, Winchester just announced at SHOT show the new rounds. 1.71" case length 2.25" oal. Even making new bullets for it. CMMG is supposed to be making AR's for it. We've been doing the AR Maximums (1.6") and have pushed them out for some custom builds, so rechambering to the Legend is doable. Yes, I spoke with GM last week and they are ramping up for the 1:16 twist barrels. I'm sure CMMG will have mags, but in the mean time, use PMags and file the front rib down to clear the larger dia bullet That's what we do...
|
|
|
Post by 357magar on Feb 23, 2019 11:57:55 GMT -5
Yes, Winchester just announced at SHOT show the new rounds. 1.71" case length 2.25" oal. Even making new bullets for it. CMMG is supposed to be making AR's for it. We've been doing the AR Maximums (1.6") and have pushed them out for some custom builds, so rechambering to the Legend is doable. Yes, I spoke with GM last week and they are ramping up for the 1:16 twist barrels. I'm sure CMMG will have mags, but in the mean time, use PMags and file the front rib down to clear the larger dia bullet That's what we do... Wouldn't the 300 BLK magazine fit the bill here. Magpul makes a 30 rounder specific for 300 BLK with the ribs already reduced.
|
|
|
Post by HMC710 on Feb 24, 2019 19:28:26 GMT -5
Reduced, not eliminated
|
|
|
Post by HMC710 on Mar 11, 2019 19:17:37 GMT -5
New SS blanks on order for the 350 Legend and 357 Maximum. We are still going to offer the .358 for those who want that options. Reamer is ordered, but I don't know how it will work with Starline Basic Brass. We had issues with tight necks with the 357 Max. Plus I would like to hear more on CMMG and how their uppers are feeding.
NEWS: Learned something new category: I was concerned with the SAAMI print for the Legend listed .355/.346 bore/groove for the Legend. Then the keyboard experts started to weight in on what caliber a 357 actually is; 355 or 357. Colt and Uburti both use .355 bore barrels for the .357 so I guess I learned something. Lots of info out there on smiths slugging barrels from .353 - .361". So, the two "9mm" barrels with 1:10 twist were to test a 9mm Magnum and 9mm Maximum with heavy cast boolits. We'll give the a try with 357 bullets and see what happens.
|
|
|
Post by HMC710 on Mar 18, 2019 17:58:39 GMT -5
Got new blanks in so will build a Legend with our reamer and Starline brass and see how it goes (when I get back)….
|
|
|
Post by HMC710 on Apr 20, 2019 12:48:18 GMT -5
Ready to test fire two new 350 Legends: 11" SS 1:16 and an 18" 1:10 twist for cast boolit loads. Lots of rain lately so will head to the local indoor range when I get some more things done today. No chrono here so that will have to wait.
|
|
|
Post by HMC710 on Apr 21, 2019 13:25:54 GMT -5
Good day at the range with the 350 Legend* (HM version) Feed and function was 100% with both uppers using modified PMags with 3 rounds. I'll get a couple of short mags and set them up for 5 rounds capacities. Pistol upper is 11" with SS 1:16 Legend blank from Green Mountain. Load was 2* gr of Heavy Pistol (Lovex 37.2 2400 clone) and 125gr Hornady XTP's. No target or chronograph so function test only. I do think I'll bump the gas port up a bit. Rifle upper is an 18" CM 9mm 1:10 twist from Green Mountain. I deep chambered this from a Maximum chamber to 1.71" for testing with cast bullets. Made up two loads of 10gr of Heavy Pistol and 246gr and 300gr Hard Cast boolits. Loads were close to subsonic, but couldn't verify. Feed was 100% from Pmag. I see Lee has dies available so we'll get dies and brass and go from there. Might cut some brass down for the ARMax so we don't bulge the basic brass too much. Fun round.
|
|