350 Legend
- Thread starter Tomme boy
- Start date
Ian
Notorious member
I agree with Fiver. Loose primer pockets seem to be over-pressure in the particular chamber they were fired in. I'm still having trouble with one of my AR-15s (marked "5.56x45mm") having a throat so short that any and all true 5.56 factory ammo I've tried in it drops fired primers in the barrel extension.
CWLONGSHOT
Well-Known Member
IINM Federal is running 357 dia. This could account for anlil of the pressuer.
I know I get a well flattened but only .008-.009 case head exp. (factory shows .009/.010 CHE) I am using CCI400 so thats likly why. But my vel is 2350 ish. Thats with 21.5g of factory powder and a re sized FTX 140 bullet. Twice thru the lee .356 gets me .356.5-.356.7 dia. But accuracy is very good. Some of my win cases are in there fourth firing.
I know in my 223 loads Federal is always the first to see loose pockets. Maybe just soft case heads.
Cw
I know I get a well flattened but only .008-.009 case head exp. (factory shows .009/.010 CHE) I am using CCI400 so thats likly why. But my vel is 2350 ish. Thats with 21.5g of factory powder and a re sized FTX 140 bullet. Twice thru the lee .356 gets me .356.5-.356.7 dia. But accuracy is very good. Some of my win cases are in there fourth firing.
I know in my 223 loads Federal is always the first to see loose pockets. Maybe just soft case heads.
Cw
Tomme boy
Well-Known Member
When I sized these the only thing that looks like was sized was the mouth of the case. There was a shiny marks about 1/4" long at the mouth where it was sized. The lube was not even wiped off the rest of the case. I know because I was using the nasty LEE white case lube. It was not touched.
I have not pulled any of the Federal bullets to check the diameter. I will later tonite. But I don't see them being 0.357" I can't get a 0.357" bullet to chamber right now. Tried with my bullets I had on hand.
I have not pulled any of the Federal bullets to check the diameter. I will later tonite. But I don't see them being 0.357" I can't get a 0.357" bullet to chamber right now. Tried with my bullets I had on hand.
Tomme boy
Well-Known Member
I pulled one bullet out of factory Federal 180 gr. It is a 0.355" bullet.
The powder was severely compressed. It would not pour out. I tried tapping it upside down and only got as couple kernels out. It does not look like any powder that you think for this cartridge. It really looks like Accurate 5744. They are very large extruded powder.
I loaded up a few with the 200 gr Lee sized and powder coated and gas checked at 0.356". They feed perfect and extract easy as well. I also loaded up some 180gr jacketed that CWLongshoot sent me. They are the spire point ones. They are sized 0.356" also.
The Lee bullets I used LILgun from 21.4-22.4 in 0.2 gr increments.
And looking around I seen a lot of people loading the 180gr Win bullet at 25.1 gr so I went with 25gr just to see.
Hopefully tomorrow I will get out to try them out. Not sure if the private range I shoot at I am able to shoot. The man that owns it (Bigfoot Goose Decoys) wants everyone to stay away during the duck and goose seasons. He brings in people from all the hunting companies all over USA and Canada to hunt this private farm. He plants corn and then floods the fields so they can hunt. Then in the spring he plows it all under. Must be nice to have that $$$$ But he lets me shoot there so... And we can shoot out to 1K yds. And we have a heated shooting shack to shoot all winter.
The powder was severely compressed. It would not pour out. I tried tapping it upside down and only got as couple kernels out. It does not look like any powder that you think for this cartridge. It really looks like Accurate 5744. They are very large extruded powder.
I loaded up a few with the 200 gr Lee sized and powder coated and gas checked at 0.356". They feed perfect and extract easy as well. I also loaded up some 180gr jacketed that CWLongshoot sent me. They are the spire point ones. They are sized 0.356" also.
The Lee bullets I used LILgun from 21.4-22.4 in 0.2 gr increments.
And looking around I seen a lot of people loading the 180gr Win bullet at 25.1 gr so I went with 25gr just to see.
Hopefully tomorrow I will get out to try them out. Not sure if the private range I shoot at I am able to shoot. The man that owns it (Bigfoot Goose Decoys) wants everyone to stay away during the duck and goose seasons. He brings in people from all the hunting companies all over USA and Canada to hunt this private farm. He plants corn and then floods the fields so they can hunt. Then in the spring he plows it all under. Must be nice to have that $$$$ But he lets me shoot there so... And we can shoot out to 1K yds. And we have a heated shooting shack to shoot all winter.
CWLONGSHOT
Well-Known Member
As mentioned... Measuring factory, then firing shows measured .009 ish. My loads loaded to same or slight less... It is what it is. Vel is 2350 ish so not crazy. Factory was just about 2300.
CW
CWLONGSHOT
Well-Known Member
Did you get a chance to send anything down range TB?
I hit the range late Sunday. But too much gabbering and shooting my 7mag ran me outta time on the 350 loads with xtp FP bullets...
I hit the range late Sunday. But too much gabbering and shooting my 7mag ran me outta time on the 350 loads with xtp FP bullets...
CWLONGSHOT
Well-Known Member
Sorry to hear... Been there too many times.
CW
CW
Tomme boy
Well-Known Member
Made it out today to shoot this a little. Some good. Some bad.
I was running into pressure problems. Had 3 blown primers. A bunch leaking. Winchester brass that I had to ream out the primer crimps was the problem. But the flattened and blown primers was something different.
I did find a couple groups that shot pretty good for the first time loading this. The 200gr Lee shot pretty good. I will try later to get a couple pics.
I tried the 147gr Lymann 9mm bullet and it was the largest group I have ever shot. They did not stay on the paper that was a 3'x3'. I don't know where they went??
I am thinking I may try a slower powder.v Today all loads were with Lil Gun.
I was running into pressure problems. Had 3 blown primers. A bunch leaking. Winchester brass that I had to ream out the primer crimps was the problem. But the flattened and blown primers was something different.
I did find a couple groups that shot pretty good for the first time loading this. The 200gr Lee shot pretty good. I will try later to get a couple pics.
I tried the 147gr Lymann 9mm bullet and it was the largest group I have ever shot. They did not stay on the paper that was a 3'x3'. I don't know where they went??
I am thinking I may try a slower powder.v Today all loads were with Lil Gun.
CWLONGSHOT
Well-Known Member
Sorry to hear!!
I havent tried those lyman 147’s in the Legend yet. They shoot nice in my Super and 357 sig!
Tonight I swapped scopes on the legend. Its now wearin a Aimpoint CompC.
Tomorrow or Friday I will load some more test ammo.
CW
I havent tried those lyman 147’s in the Legend yet. They shoot nice in my Super and 357 sig!
Tonight I swapped scopes on the legend. Its now wearin a Aimpoint CompC.
Tomorrow or Friday I will load some more test ammo.
CW
Tomme boy
Well-Known Member
The blue Lymann's also shot very poorly. Almost 7" group. Hit pressure right away with the same loads I shot with the Lee. I ended up pulling them apart. It had ejector swipes at 21gr Lilgun.
One thing I never had happen to me was the LilGun powder etched into my RCBS powder measure. I filled it last night about midnight and tonite it was welded to the sides. I have never had a powder do that before.
I just loaded up some more with 5744. I used 357 Max data. I feel it is not going to cycle. Seems low. I did 18gr-19.5 in .3gr increments. With the Lee 200-rf.
One thing I never had happen to me was the LilGun powder etched into my RCBS powder measure. I filled it last night about midnight and tonite it was welded to the sides. I have never had a powder do that before.
I just loaded up some more with 5744. I used 357 Max data. I feel it is not going to cycle. Seems low. I did 18gr-19.5 in .3gr increments. With the Lee 200-rf.
fiver
Well-Known Member
Dang Tomme.
in the 357 max I use H-110, I'd have to double check the numbers with the 180's I have [jacketed] but it's a lot.
it's been long enough though I wouldn't even try to drop a number.
1680 uses more [something like 28grs comes to mind, but don't quote me on that]
I predicted 2400 would line out around 1900+ fps, but you can get 1800 from a 357 regular mag in a 24" Lever gun so your not hardly gaining anything over even that if that's the case.
in the 357 max I use H-110, I'd have to double check the numbers with the 180's I have [jacketed] but it's a lot.
it's been long enough though I wouldn't even try to drop a number.
1680 uses more [something like 28grs comes to mind, but don't quote me on that]
I predicted 2400 would line out around 1900+ fps, but you can get 1800 from a 357 regular mag in a 24" Lever gun so your not hardly gaining anything over even that if that's the case.