Favorite mould for AR 300bo?
- Thread starter dg31872
- Start date
Man, tough question.
I have only tried 2 so far. The NOE 230 plain base and the MP 30 will GC.
The 230 I shot with 4227 at subsonic velocities. The 30 sil went full out. I was shocked to get 1700 plus with a 170 gr cast. Accuracy wasn't great, around 3 inches at 100. I need to try a few different sizes and alloys to see how much I can improve that. The upper was also pretty cheap so I don't know what the barrel is capable. Might need to try some jacketed and find out?
I have only tried 2 so far. The NOE 230 plain base and the MP 30 will GC.
The 230 I shot with 4227 at subsonic velocities. The 30 sil went full out. I was shocked to get 1700 plus with a 170 gr cast. Accuracy wasn't great, around 3 inches at 100. I need to try a few different sizes and alloys to see how much I can improve that. The upper was also pretty cheap so I don't know what the barrel is capable. Might need to try some jacketed and find out?
Josh
Well-Known Member
I really like the Lee 312-155-2R for most everything 300 BLK, it seems to shoot from low end cat sneeze loads to full power stuff. It doesnt hurt that it is available in cheap multi cavity moulds. I have also seen that the 311466 is a very nice bullet to seat in the neck of a 300 BLK.
Ian
Notorious member
Lee 309-230-5R with straight clippy WW and powder coated and sized .3092". Reloder 7 for 1020 fps. Necks expanded with .308" RCBS cast bullet spud.
I can currently recommend no other mould for subsonic work, and can ONLY recommend the Lee if you powder coat them because they are so terribly undersized.
I can currently recommend no other mould for subsonic work, and can ONLY recommend the Lee if you powder coat them because they are so terribly undersized.
I need to get that mould. Well, I have one I borrowed but it is sloppy and gives some bad seems lines on the bullets particularly in the nose.
Josh
Well-Known Member
One of the best $22 I have ever spent.
F
freebullet
Guest
Dandy mold for the sks & ak too
waco
Springfield, Oregon
I have both two and six cavity. This bullet and 15gr IMR4227 shoot small groups at 50 and not much larger at 100.
L1A1Rocker
Active Member
I cannot find a 6 cavity Lee 230 anywhere. If someone finds a vendor with them PLEASE post it up.
Ian
Notorious member
Lee doesn't make that one in a six cavity. I literally just got finished casting 350 more from my two-banger, turned the pot on at 9:30 and just now washed up and sat down at ten 'til midnight.
I really really really want to solve this lack of a decent heavyweight multi-cavity mould for the 300 BLK ARs.
I'm convinced after having shot over 1K of the Lee bullets, powder coated, through now six different ARs all with radically different chambers and throats, that we pretty much just need that basic design but a little more fat on the microbands and first band, and about .001" larger overall on the nose. The rest is just about perfect. If powder-coated, the microbands are just right, the nose is the exact perfect shape to fit the Magpul magazines with the center rib in the front, the crimp groove is in the correct spot, the boat tail base is in the correct place, they weigh what they need to for carbine-length gas systems to work well, and they shoot with reliable if not stellar accuracy in any rifle I've tried them in. Even my .308 is holding MOA with them.
Josh's 6-cavity design is just right for greased bullets in an AR, but with a suppressor I like the powder coated option. The boat tail of the Lee bullet has a lot of advantages if powder coated, but for plain grease-groove bullets I think the plain base is the way to go.
I really really really want to solve this lack of a decent heavyweight multi-cavity mould for the 300 BLK ARs.
I'm convinced after having shot over 1K of the Lee bullets, powder coated, through now six different ARs all with radically different chambers and throats, that we pretty much just need that basic design but a little more fat on the microbands and first band, and about .001" larger overall on the nose. The rest is just about perfect. If powder-coated, the microbands are just right, the nose is the exact perfect shape to fit the Magpul magazines with the center rib in the front, the crimp groove is in the correct spot, the boat tail base is in the correct place, they weigh what they need to for carbine-length gas systems to work well, and they shoot with reliable if not stellar accuracy in any rifle I've tried them in. Even my .308 is holding MOA with them.
Josh's 6-cavity design is just right for greased bullets in an AR, but with a suppressor I like the powder coated option. The boat tail of the Lee bullet has a lot of advantages if powder coated, but for plain grease-groove bullets I think the plain base is the way to go.
http://noebulletmolds.com/NV/produc...ucts_id=257&osCsid=mlkjnt2bhnmb33g7sjqrhaau56
Anyone try this one?
Anyone try this one?
No doubt. Kick myself regularly for that.
Is that NOE I posted similar to the HM2 we all passed on? Sure looks like it. Nose might be a bit fat
fiver
Well-Known Member
no it's different.
the drive band on the front is too thin and it doesn't have the bulge like the 30 silhouette has.
the LEE design is similar but like everything else LEE jacked it around.
they initially hit the mark then wandered off track over time.
Walt Melander done a faithful copy, and the HM-2 is correct.
everything else is kinda sorta close, and as we all know that front band transition is what makes or breaks a solid mold design.
the drive band on the front is too thin and it doesn't have the bulge like the 30 silhouette has.
the LEE design is similar but like everything else LEE jacked it around.
they initially hit the mark then wandered off track over time.
Walt Melander done a faithful copy, and the HM-2 is correct.
everything else is kinda sorta close, and as we all know that front band transition is what makes or breaks a solid mold design.
