Mp 452 374

[freebullet]

Have I become cynical? This one showed up today & I'm debating venting it before even using. Thoughts?


Seems it's so tight I may save some frustration if not venting it before the first use.

 

[Brad]

Those big diameter bullets seem more prone to fill out issues in my experience. I would likely add a little venting right off. I would start small knowing I can remove more but can never put it back.

 

[358156 hp]

I had to vent my MP 452374 brass mould. Before you do that with a new mould you could always loosen your sprue plate screw a bit if it fails to please you. One big advantage to this is that you can loosen the screw a mite while casting to see if you're headed in the right direction.

 

[Ben]

Those big diameter bullets seem more prone to fill out issues in my experience. I would likely add a little venting right off. I would start small knowing I can remove more but can never put it back.

My barber always says, " I can take it off pretty easy.
But , putting it back on is another story."

 

[Ian]

I'd run it as is first, you may be surprised. Those are basically Lee commercial blocks he uses fir the Al sixpacks and I never, ever have trouble with the bases being razor sharp with my Lee .45 commercial moulds (the old ones before Lee started cutting vent lines on the top). I run the mould hot and fast and keep a very generous sprue going (pour all six and then link them all with a long continuous stream of lead to keep heat going into the plate). For pistol bullets I typically run wheelwights or diluted wheelweights having next to no tin. Heat is your friend.

 

[freebullet]

Thanks, fellas! Maybe Wednesday I'll have time to give it a go.

 

[Bret4207]

I've never used anything like that but with heat, clearances change. I'd try it as is first.

 

[freebullet]

I must be getting cynical. Didn't vent it. Turns out didn't need to either. Very pleased with the mold.



Cast a small sampler this eve. Seems like this mystery lead has a good bit of antimony.



These ought to feed in just about any 45. Any favorite loads with this bullet?
Same dirty rag just for Ian! It has a few more good years left in it.

 

[462]

Excellent. Goes to show that you never know till you try it.

My Lyman version and 5.0-grains of Unique or 4.5-grains of Trail Boss make excellent all-day plinkers.
I don't think it's necessary to make that bullet design go fast.

 

[Brad]

Dude, where does the lube go?

 

[462]

He must have sold the loob grooves to subsidize the mould purchase.

 

[Brad]

He is a cheap bastard

 

[freebullet]

Dude, where does the lube go

Slathered on the outside? I'd have opted for a groove but none available unless I went to 4 cav...mo' is better for autoloading handguns. They sure rain from this mold though.

 

[Ian]

LOL! Next time I order PC I'm gonna order some bubblegum pink and take some glamor shots...of some voluptuous hollowpoints.

 

[freebullet]

He is a cheap bastard

Well you snuck that one in on me!.. you been talking to my wife? She's at least polite about it. She exclaims "BUT we have to find a Bruce deal though". If you mean I want a $6500 car for $3000, then yes and thank you.

I sized some of these what I thought was 452..what the die says...lee,,,4515. I tumble lubed them anyway.

 

[Ian]

They'll probably shoot better and lead less at .4515" anyway.

 

[Brad]

With no groove for metal to displace into a slightly smaller billet makes sense. Let that metal flow into filling the bore.

 

[freebullet]

Going for 2 work ups either way. One tg, other hs6. Something about the moderated recoil pulse from hs6 in 45acp govt specifically keeps me coming back too it.

 

[Brad]

A square cornered firing pin stop makes a big difference too.
35 Remington turned me onto that and boy was it worthwhile to fit one

 

[freebullet]

Never heard of such a creature. Guess I'll investigate.