Powder coating the LEE 230 300 AAC BLACKOUT Bullet

[cwlongshot]

Hello all,
I have a question on the bore rider section on this bullet as it pertains to powder coating increasing the diameter... @ 230g there aint any room to seat this bullet deeper in the case. SO If the order coat increases the diameter too much, even chambering this long bullet could be problematic.

now I don't have this bullet. (YET) But strongly considering it. Do any of you find this a problem or concern. If your using it I would love to hear your opinions.





CW

[Rottweiler]

I have this boolit mold. They are great out of all 3 of my .300 BO rifles (1 bolt,2 AR uppers) Yes I powder coat them. BUT I also run them through a .309 sizer die AFTER the powder is baked. They are quieter than an air rifle out of the suppressed bolt rifle at about 900 fps. but will not cycle in either AR upper at that velocity.

[HABCAN]

I have the mold, and powder coat its product to shoot in everything from .32-20 Contender through the usual .30's and magnums and on into the .303 Brit. both sized (various) and unsized. For the price, what's holding you back?

[Grmps]

Many of these molds drop small, different powders add differing thicknesses to boolits. This works fine in my 06 and 300 AAC

[docslester]

Good evening all. Long time lurker, first posting. This is the bullet that started me casting and powder coating. Buy the Lee push through .309 sizer as was mentioned. Fits and cycles both my AR's with 1680 and Reloader 7. Makes good plinking ammo. Never got match grade accuracy but could ring a 6 inch steel repeatedly from 100'.

[cwlongshot]

I have this boolit mold. They are great out of all 3 of my .300 BO rifles (1 bolt,2 AR uppers) Yes I powder coat them. BUT I also run them through a .309 sizer die AFTER the powder is baked. They are quieter than an air rifle out of the suppressed bolt rifle at about 900 fps. but will not cycle in either AR upper at that velocity.

This is the answer I got from two of the uTubers I questioned on there videos!!

But the forward section, (See above line drawing of bullet) this .271" long section in front of last driving band, is the bore rider section... It dosen't get sized as its .300 as cast. SO, with PC it will make it .002-.004 larger and maybe this could be a issue chambering. This was the reason for my question.

I am enthusiastic about this bullet HABCAN, but likely would not get it unless I could PC it.

CW

[gpidaho]

CW: Yes, I have this Lee mould and it works well in both my AR and daughters Handi rifle To get the accuracy needed the bore riding section does need to be a perfect fit. I use the NOE nose sizing bushings and this really brings out the best in this bullet. Gp

[Rottweiler]

gpidaho is correct

[cwlongshot]

CW: Yes, I have this Lee mould and it works well in both my AR and daughters Handi rifle To get the accuracy needed the bore riding section does need to be a perfect fit. I use the NOE nose sizing bushings and this really brings out the best in this bullet. Gp

Guess some research into these dies is in order...

Thank you!

CW

[jimb16]

I use that mold for my .300 bo. I powder coat and have no problem and I don't size the boolits.

[roharmon]

I tried several different alloys and could not get it to drop any larger than .308. They worked fine out to 25 yards, but sucked past that. I switched to the NOE and everything works fine out to 100 yards.

[cwlongshot]

I cast some Friday night. They drop at 311, our of powder they are almost 313. I only coated about a dozen then sized to .310 and loaded on 10.3 of AA 1680. They averaged 1045 and shot 2" @ 50 yards.



More casting is in order.

CW

[roharmon]

Good on ya, I couldn’t get them to drop anywhere close to that size even close to 100% lineotype.

[odfairfaxsub]

It’s a great 300 blackout bullet. Powder coated it does amazing

[igolfat8]

I tried several different alloys and could not get it to drop any larger than .308. They worked fine out to 25 yards, but sucked past that. I switched to the NOE and everything works fine out to 100 yards.

What NOE mold?

[Smk SHoe]

311-180-RF 2 cavity 1GC 1PB (K-31) is the NOE mold I got to try in my AR 300 BLK OUT,
I was having the same problem others were having with my other 30 cal molds. After PCing the bore riding section was to tight to get a reliable feeding or extracting. Had to seat to deep for my taste. This bullet is designed for tight throat 308's ( Swiss K-31) and with PC I am getting just at .301 along the ogive. Seems to cycle and extract just fine. Now to get some loaded and tried out.

[Phantom30]

Been there done that don't do it. That mold is not a bore rider in a SAAMI 300 BO chamber. Think I posted that chamber comparison out there somewhere. Try Arsenal PC309-188-NR-BR-GC it is designed for PC 30 cal., you can drop the GC feature for 300 BO since the muzzle is around 2,000 fps. Processing PC bore riders is a purview of Bama. See his accurate out to 350 yards thread.

[cwlongshot]

Been there done that don't do it. That mold is not a bore rider in a SAAMI 300 BO chamber. Think I posted that chamber comparison out there somewhere. Try Arsenal PC309-188-NR-BR-GC it is designed for PC 30 cal., you can drop the GC feature for 300 BO since the muzzle is around 2,000 fps. Processing PC bore riders is a purview of Bama. See his accurate out to 350 yards thread.

What would that .271 portion in front of the driving band @ .300 considered be then?

RC on the GC, don't plan on or feel its warranted on this caliber.

CW

[cwlongshot]

Good on ya, I couldn’t get them to drop anywhere close to that size even close to 100% lineotype.

I have found a second casting to be smaller...and harder. Still .3095 or .310 so OK, but not as large as first batch.

CW

[Phantom30]

Well I have the MidwayUSA drawing and used it to build my 3D CAD model of the bullet years ago to match up with SAAMI chamber specifications. The chart you have there doesn't match the original data. The front drive band is 0.090" but the bore rider cylindrical section is .236" not .271 which means that the bore rider section does not extend far enough forward to enter the bore. So IMHO the thing is not a true bore rider loaded in 300BO.