mp 227-65 nato gc

[Tomme boy]

Anyone use this mold? I have 5 different 556 rifles I need to feed. I just ordered one. I think 4 are 7 twist and the last is a 8 twist. And a bolt gun in 9 twist.

What size do you normally size to? I need to order a sizer and checks yet.

I have close to 1500 jacketed left that need reloaded. But I want to hang onto them for a while to see what is in our future. So cast bullets for awhile.

 

[Ian]

Is the 65 a double or single lube groove?

Size to throat entrance diameter (might be .2245 or might be .228", need to make a cast). Use a little firmer alloy than usual, like #2 or 6 Sb/4 Sn.

 

[Bruce Drake]

I do. I have a 4 cavity mold from him and it is indeed a nice bullet for my 1-7 5.56 NATO and 1-9 twist 223 Rem chambered AR15s. I size to .225 but I might invest in a .226 die in the future to see if it improves the groups past 200 yards. The heavier bullet does help with getting the AR15s to function properly with cast bullets and increases the powder selection as well.

 

[Bruce Drake]

Sorry its not a better photo but its a two lube band bullet with a gascheck shank. I polycoat my bullets and this one is in dark green so the its hard to see details. I cast, PC coat and then gas check and PC coat and then size before I use them. After PC coating and gaschecks added, the bullets usually weigh 69gr.

 

[Tomme boy]

Here is the photo from mp website.

Looks real similar to the 30 sil. I figured that I would run them with lino as I have a bunch right now. And these don't use as much as all my other molds. 300lbs of lino will make a lot of these.

my 223 bolt gun is very tight compared to the AR15's. So I may just forget the 223 gun.

 

[Ian]

I wouldn't use lino. The single-groove jobbie does well gas checked, powder coated, and sent out with jacketed loads of H335 or 3031.

 

[Brad]

Keep the tin low so the bullet can flow as designed.

 

[Tomme boy]

So cut the lino in half with roofing lead? i tried to download a alloy calculator but my product key from my old computer that had windows excel is not working. None of the cal will work

 

[Ian]

more like 1 lino two roofing lead and heat treat it.

 

[Spindrift]

I have a 6-cav mould. I’ve been shooting it in a 1:12ROT .223 bolt gun. With regular lube, my gun prefers .226. With PC, it seems .225 and .226 give quite similar accuracy- the jury is still out. I use the NOE bushing sizer.

This bullet has been a pleasure to work with. Very good accuracy potential, and a very productive mould with low reject rate. My alloy is «plumbous scrap alloy + 1% tin», BHN 15.

I think you’ll be happy with it. Good luck!

 

[Tomme boy]

Got her in today. Ordered Tuesday evening and at my door at 1 o'clock today. I just placed an order to Midway and it is supposed to be here next Friday! I can't believe the mold only took a couple days and Midway is just one state away and it will be a week.

No wonder the USPS is going out of business.

Anyway, boy these bullets are small. I hope my fingers will hold up to checking and sizing them.

Went to the scrap yard today and got 200lbs of lead. about 45lbs was 1/8" lead wire. A bunch of pipe that had what looked like tin solder joints. They were about 1/4" larger all the way around and silver compared to the dull grey of the pipe. Most of these pipe sections were about 16" long and the joints were about 4" each. So I should have some tin rich lead there. I am going to cut out each joint. Then about 50 lbs of flashing. Plus it looked like someone cleaned out dads or grandad's bullet stash. These look like commercial cast bullets. About 1 full box of 44 round flat points. About 400 38 hollow base wad cutters. They looked like the graphite coated Hornady bullets. They were really soft. Then about half a coffee can of what looked like 7mm loveren bullets. These were extremely hard. Also was a coffee can of mixed 38,9mm,44,45 bullets. These were hard as well. Plus a 2 liter bottle of 7.5 bird shot.

I started to melt down the jumble and got wore out. I got the lead wire sorted and made into ingots I then took all the bullets and melted them together. The sheeting and pipe will get done some other time.

I cast about 300 of the 223 bullets out of the bullet mixed lead. It cast awesome. It must have a lot of tin because the lead was hot and the mold was up to temp in a couple cast. I kept trying to go faster but it was a very fine line from slushy bullets to cooled off to long. None of the bullets sprue cuts were tearing out. If it did the bullets were slushy and I did not wait long enough. That only happened 2x. The rest cut perfect. They came out of the mold at 0.226"

I also got some checks ordered. Sage got in a big shipment of copper checks if anyone needs any. I was going to get some aluminum checks as that was all he had yesterday. Good thing I looked at the copper ones first. I do not like aluminum checks. The only ones I could get to stay on were made by a friend in 30cal.

 

[Tomme boy]

Got about 150 bullets sized, checked pc'd then sized again tonite. Most checks slipped right on. But I noticed the bullets that the mold must have been cold left a bump on the base from the sprue not cutting flush. So those were sorted out and didn't have much problems after that.

Boy, this will be one mold that does not get used much. My fingers are killing me. I had about 15% cull sorting out the bad ones. Had to get the reading glasses out to see the defects because the bullets are so small.

I am going to wait a week then load some up. Going to try them in the Savage bolt rifle first. Then if they shoot good in that one start working on the AR15's.

 

[Kevin Stenberg]

I use a magnifier of some kind when inspecting 22's

 

[Bruce Drake]

Here is a picture of a few I cast tonight so I would have a better picture of the bullets themselves minus the dark PC color coating. MiHec Molds are excellent.
And yes. Run the pot hot and keep the mold warm and ensure the bands fully form. Don't think the lube or PC will cover up for incomplete mold fillout and if your eyes are older, use a good set of readers to easily see the bullets with imperfections.
AndI use a small set of needlenose pliers to pick them up and manipulate them. It makes it easier to size and gas-check them.

 

[Tomme boy]

OK I found a Remington 700 adl in 223 on brickseek for $79. I went to get it today but the guy that does the gun transfers at the walmart was gone. Heading back first thing in the morning as he is supposed to be there.

Now, would this work well in a 1-12" twist? That is what this gun has. I had one of these years ago and it shot the Sierra 60gr hp very well.

 

[fiver]

throw 11 grs of 2400 behind them and see how well the 1-12 does.

oh and I guess I should let you know what that lead wire would have fetched you on the open market, but I hate to see a grown man cry.

 

[Tomme boy]

I just looked at rotometals. $0.99/ft. Each foot weighs 0.06lbs So roughly $740 on the market new. Plus shipping.

 

[Spindrift]

Now, would this work well in a 1-12" twist?

It has worked very well in my 1:12 ROT, at least. The MP227-65 is actually shorter than a Hornady 55grs soft point, flat base.

 

[Kevin Stenberg]

There is a GB going on this bullet. So i am following with interest
Tommy Boy i have looked several times on brickseek and can never find any deals like you come up with.

 

[popper]

Download LibreOffice7 for free. Has spreadsheet and everything in it.