350 Legend

[Ian]

HS6 and Titegroup will ruin an RCBS hopper tube in 30 minutes. I'm on my second tube and and was super careful with it after leaving powder in the first one for days, but ot appears that any time is too much. The true polycarbonate plastics like Lee and Lyman use are good to go. I think RCBS uses acrylic or acetate.

 

[Tomme boy]

I left tightgroup in it for a week and it didn't do anything. I don't know what it is made out of. I bought this around 1990 if that matters.

I went and loaded some more up. I loaded one at 18gr and then loaded another one at .5gr increase to 25grs with the Lee 200-rf. I can't get back out till Fri or Sat to try them.

That Factory Federal 180 gr I pulled the powder out. It had 26gr of powder. I am pretty sure it is 5744. It is exactly the same size of cut, same diameter. And same hole in the center of the tubular kernel.

This really sucks as there is just NO data out there right now for this. But I should be ok if I use the Max data. I really do not want to use the 5744 due to cost. I have a good supply but not at 42$/lb here right now to replace it. Going to order some Starline brass tomorrow.

 

[Tom]

You might find 357 max data a bit light for cycling, assuming you're using an ar15. I don't remember the numbers, but the max is rated at a lower pressure than the 223.
The case is slightly different than the 357ar, but should be similar.

357AR Load Data Thread

A Place Where We can Share Our Load Data. Please refrain from posting other info here. https://docs.google.com/spreadsheets/d/1a4H02BQwSWC6rL8y-gwUFJLILTmxJSSnoLGZUpSmnZ0/edit?usp=sharing

mdws.forumchitchat.com

No gospel here, but something to look at.

 

[CWLONGSHOT]

I think we have talked this. But I am not a fan of Lil Gun at all. Yea it provides top velocities.. But Im not all about top velocity.

What it also does is burn VERY VERY HOT! Just feel your barrel after just a few shots.

It can pressure spike when even lightly compressed.

I dont consider it a “lead friendly” powder.

Its just my experience.

I just ordered another mold. This one is 360-27c from Tom @ Accurate. Not really for the Legend but for my Norma mag and Whelen. But if I wanted to play with subs this might work.

Have you looked at the two190’s or 230g yet? One of the 190’s required deep seating even in Maxi. But i liked it allot in the Maxi. The other is a real RD bullet and has shot pretty well for me with 4227 & 5744. (But vel low with xmp)

CW

 

[CWLONGSHOT]

You might find 357 max data a bit light for cycling, assuming you're using an ar15. I don't remember the numbers, but the max is rated at a lower pressure than the 223.
The case is slightly different than the 357ar, but should be similar.

357AR Load Data Thread

A Place Where We can Share Our Load Data. Please refrain from posting other info here. https://docs.google.com/spreadsheets/d/1a4H02BQwSWC6rL8y-gwUFJLILTmxJSSnoLGZUpSmnZ0/edit?usp=sharing

mdws.forumchitchat.com

No gospel here, but something to look at.

My first loads in the legend where using maxi data as starter. Case cap is very close with more in legend. Pressures are a question too as the maxi is from 40-48 cup and the Legend 50-55.

I do not have a AR in Legend tho so Im not as bothered by cycling issues. But safety wise everything I have used in maxi for legend has been light in my gun.

 

[Tomme boy]

@CWLONGSHOT I have only tried the 147 and whatever that blue round nose was. And then the Lee I have. For cast anyway. The 140 Poly and the 180 Spitzer. Both shot extremely well. The 140 shot the best.

 

[CWLONGSHOT]

The Blue is a classic Lyman 200 RN, number escapes me. (358315 maybe?) Was OK for me not spectacular. But dont remember trying many powders But I used 4227 with everything first.

 

[Tomme boy]

I ran some more loads today with the Lee 200gr. 2400 is a NO GO. Would not cycle everytime. 19grs it was finally starting to pick up the next round. But the primers were getting pretty flat.

The 5744 with the Lee hit a node from 23-24.5grs. These all cycled fine. I ran it up to 25grs but that did not stay in the group.

Going to have to wait till I get some more copper checks. Not going to mess around with the aluminum ones. I have a bunch of other stuff that needs to be ordered anyway.

 

[CWLONGSHOT]

I just ordered a RCBS 35-200. I had the Lyman copy for twenty plus years... I cast a bunch way back. Powder coated the last of them & looked for the mold. All I can think is I lent it to someone.... All my molds are together or with pot when in use. So it wasn’t misplaced. SO with three new 35’s this past year... I wanted this classic back. Also still waiting for Tom @ Accurate to ship me the 36-270c. Then we should be back into cool enough weather to melt lead again.

Bummer about 2400, I had hopes. But 5744 is another friendly cast powder I enjoy.

CW

 

[Tomme boy]

Someone ran a quickload on the 5744 with the factory 180gr bullet on another forum. They ran the 26.3grs someone found in theirs. It showed almost 77K PSI. So whatever the powder is it must be slower than 5744.

I ran it up to 25gr and it was no where near that by the primer. It was getting flat, but nowhere near the factory Federal I have. But that may be the reason the case heads stretched so bad on them too.

 

[Ian]

As I recall, case head material for 50-60 KPSI cartridges starts to flow at about 65-70K. That's when primers get loose and metal begins to flow into bolt recesses.

That said, Starline .458 Socom brass begins to flow at about 40K psi with a max chamber pressure established at 35K and LP-type primers specified so much depends on what the brass is meant to handle.

 

[fiver]

4198, rl-7, AA-2200 are all right behind 5744, anything past that and your into H-322 territory.
[AA-1680 is a fine ball powder but is a touch slower than 5744 too]

 

[Tomme boy]

I have 4198 and rl-7. Problem is they are both hard to find here local. As soon as I get some more checks I am going to do more with the 5744. Below 20grs is was having problems picking up the next round.

I also forgot I have an adjustable gas block on this. I forgot to bring a set of allen keys with me so I may be able to get it to cycle at a lower charge weight. When I set it, it was with the Federal ammo. So that was full house ammo. I may be able to open a ways. Problem is you have to take the hand guard off to adjust. The adjustment screw is on the gas tube side of the block. Don't know what the heck they were thinking on that one.

 

[Bret4207]

I just ordered a RCBS 35-200. I had the Lyman copy for twenty plus years... I cast a bunch way back. Powder coated the last of them & looked for the mold. All I can think is I lent it to someone.... All my molds are together or with pot when in use. So it wasn’t misplaced. SO with three new 35’s this past year... I wanted this classic back. Also still waiting for Tom @ Accurate to ship me the 36-270c. Then we should be back into cool enough weather to melt lead again.

Bummer about 2400, I had hopes. But 5744 is another friendly cast powder I enjoy.

CW

What did you consider the "Lyman copy" of the RCBS 35-200? I assume you mean the FN version.

 

[CWLONGSHOT]

It looked just like the RCBS. No idea of mold number. (Mold is missing).

I think zi have some pics..

 

[fiver]

the 358315 is 200grs and has that basic body shape,, but has a rounded nose.
I'm assuming from the Pic. that is what's shown, but with a flattened nose.

 

[CWLONGSHOT]

I have the Lyman mold with the RN too. This one was cast flat.

 

[Ian]

John Goins (Beagle) sent me some ~200-grain Lyman round nose bullets to try one time in my .35 Remington and they went into a single hole at 50 yards. They were plain base but he had added some soda-can "Plain Base" gas checks to them. The nose shape of that mould was just perfect for a broken-in rifle throat and the results showed it. All I know about the mould was it was out of production and was made by Lyman, if I can find the leftovers I'll post a picture.

 

[CWLONGSHOT]

Here is both side by each.
Mine are both GC versions.

CW

 

[Ian]

I'll photo tonight. The one I have doesn't have that step from the nose to the first band, which is one if its most redeeming qualities.