New 7mm mould arrived today from NOE

[Ben]

This should work nicely in my 4 different 7mm rifles ( three 7X57mm and one .280 Rem ) .
Hopefully, either today or tomorrow I can cast a couple of hundred with this one. I chose the single cavity mould. I want consistency and accuracy right now vs. volume.

Ben

 

[fiver]

I like most everything about that.
not to nit pick but I'm not a fan of lube grooves that shape. [can live with them just not a fan]
might have to get one of those, it looks like it could be pretty close to the throat I have cut in my 7x57 Ackley.
the area right in front of that front groove will be the break or make it area, as well as the nose diameter.

could you throw us some numbers after you get some cast,, Please.

 

[Ben]

could you throw us some numbers after you get some cast,, Please.

I certainly will fiver !!!!!!!!

Al shows this for the bullet :

Ben

 

[Intheshop]

Ben,sort of irrespective of which rig/cal you'll be running that bullet through...... when you ordered it up,what was your target velocity?

 

[Ben]

Probably around 1,700 - 1,800 fps.
Doesn't sound very fast, but at the ranges I shoot whitetail deer, a 173 gr. bullet ( amended to 185 grs. ) like this one, placed correctly ( in the boiler room ) will do the job.

Ben

 

[fiver]

I think you'll be a bit heavier than that with your alloy.

the body looks good, and I think someone intended pushing this pretty hard.
I'm uhh,, man that nose diameter.
I'd have to double, double check but that is pushing it [I think too far] for my barrel bore diameter.

but as usual we will have to wait and see the real world numbers.

 

[Ben]

fiver :

Here are the " numbers " you said you'd like to see.
My alloy is clip on WW's with about 3 - 4 % linotype added.

I cast about 100 or so.......I have not sorted them for visual defects yet.

 

[Ben]

fiver,

It looks like you're right again ! !

 

[fiver]

ooohh, okay,,, nice.
it looks like it responds well to manipulation of the alloy too.
I think I could work with this one.

BW.
this might be a winner for your goal, there ain't a whole lot of 7mm molds with a HV potential unless you manipulate the rifle.
airc your using a 7-08, so you'd have to re-measure the neck area to that ball seat area on the bullet.
you don't want it jammed in there but some side scuffing and about .001-2 clearance on the front would be good.
you might be able to scale it down to around 130-140 grains and have it matched by mountain molds?
that would give you the in the neck length you need and not move all the weight forward too far if you leave out the front groove.
there will be a spot in front of the check for lube and you can scale back the back lube groove [or change it's shape] to move more weight around if needed while still keeping the overall design of the bullet intact.

nice job Ben....[as usual] THANK YOU Sir.

 

[Ben]

Sorry Fiver, I don't own a 7mm-08.
I've got three super accurate 7X57 rifles however.

Ben

 

[fiver]

BW has and I'm pretty sure he is looking at this for a high speed varmint zapping bullet.

I'm looking at it for my 7X57 Ackley rifle that has a throat cut for 139-140gr Bullets, but has 5-R type rifling. [hence the larger bore diameter]
it's the 5-R type that has 5 actual angles cut into the rifling.
I kind of have the same goal as BW has, but I'm looking at more like 2200 fps as a real world number.

I think this would allow me to get out to maybe 350 yards and hold decent enough accuracy to hit a softball sized target.
200 would be more my limit anyway, but just in case [shrug]

 

[Ian]

Looks a lot like the MX4 bullet that Don Eagan cut for John Ardito....in 30-cal for target work. Edit to add, the meplat was so big because it was a nose pour originally, in .30-cal. No idea why the meplat is so large on the NOE 7mm reduction, unless it was just blindly copied. The balance is too far forward, a .120" meplat would have just about cured that.

I'm not optimistic that the bullet will shoot any faster than about 2000 fps with accuracy, everything possible is wrong for HV in that in the design, at least the way I do things. But, I got the Lee 130 to do over 2600 with 8-9 out of ten into one MOA repeatably (never figured out the flyers, probably lack of lube capacity and CORE changing with antimony wash purging), so who knows.

 

[fiver]

I figured it was the MX-scaled down.
I think it just needs to be force fed like the 165-A,,, that's why I'm sweating the nose.
a long gentle shove seems to work better in most cases, but if I can get the right [straight] start and a bash in the butt moves things forward without mushing up the works it will take the velocity.
I know this rifle's chamber is cut straight, and the long flat sided ICL case sides will give me a head start.
my only major issue is the neck is not cut to tight match specs [since this is a custom beater type hunting rifle,, think sleeper race car] but I can help that area out easy enough.

I just snagged up another 5 lbs of zinc today, if that gives you an idea of what I'm thinking.

 

[Ian]

Don't get me wrong, I'm interested in what you guys can do with it, but Ben has no pound casts that I know of (so supported fit's a WAG and a prayer, especially with the Mausers) and you want to push that long bore rider fast I know, so you guys have a tough row to hoe here. Something tells me Ben's gonna cast them just right to slide in for a 2D fit and bonk them on through with a little puff of American Select, and drill little ragged holes at 80 yards, while you're gonna make them tough, jam-fit them, and give them the boot with a case nearly full of IMR 4064 to dance around 1MOA/2500+ fps. If I tried it, it would be "holy berm, Batman!", cuz I don't have the patience to dink with fitting 2D bullets at HV, or any V, with the exception of the .458 Socom.

 

[Intheshop]

There's a 7mm Rem mag encore pro hunter 'round here somewhere when the 7-08 runs out of capacity.... 3200fps?

I still haven't casted the RCBS 145 sil bullet,yet..... the Lee 135 is working real good.It did spend some time on the mill though("a little off the top please" haha) and the spru plate got surface ground.Yup,nothing like spending 40$ an hour shoptime on a 20$ mould?BW

 

[fiver]

yeah,,, if you don't spend the time thinking and rubbing the right spots you got a 20$ mold.
if you do a little this and that to make things more compatible to the rifle, and smooth operating it's a priceless mold.

 

[zymguy]

What powder do you like in the 280?

 

[Ben]

 

[fiver]

Ben is getting cheap.
I remember when he used to miss Dimes...

 

[zymguy]

I'm glad I asked, IMR 4198 was not on my radar. It shows up in my lyman cast 4th book starting with 7 mag
What sort of speed are you getting? Im going to go google that SAECO 160 boolit. Nice group!!