Deleted
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Post by Deleted on Oct 31, 2021 18:39:20 GMT -5
I recently bought MP 45 colt carbine mold. 452 size, but my lead runs .454 then powder coat adds on that. Lee push through sizer fixes easily, light spray of lube makes for quick work.The brass mp molds are gorgeous, and the pile of pins is fun to sort through. I've cast a mixed run of each HP variant and with flat point pins in. Plan to do serious test over the next month. This is a no lube groove mold. It's smooth sided designed for PC. It casts a beautiful lead object. My preliminary tests,50 Penta hp over 8gr unique and 50 Penta hp over 20gr 2400, it's very accurate in three guns I took out. 3 different vaqueros.
Showed no signs of pressure problems? Next I will load series of each bullet hp style. Accuracy test and chronograph each. Never have done wet newspaper test but Ive gathered a sizeable quantity. I'm wondering if the deep HP will perform poorly at higher velocity? Visually I like the solid point, shallow cup and Penta hp best. for some reason the two different cone HP pin types produce bullets with highest weight variation. solid and cup are best. My wife said it sounds like a science experiment when I described my testing plan. I think it sounds like fun. The MP molds are such a joy to run that casting is a real pleasure. I have the mp 270 saa swc as well, it's solid point only, but unbelievable good slug. Thanks for reading through and I appreciate any tips from experience.
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Post by contender on Oct 31, 2021 20:13:10 GMT -5
Once I got my first MP mold,, I couldn't wait to get more of them. Works of art for sure!
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Post by bearskinner on Oct 31, 2021 20:52:20 GMT -5
Casting with the M P molds is addictive. I especially love the looks of the penta pins. Even powder coated, I like gas checked bullets going over 1800 FPS ( some go much faster)
I find on the .375 rifle style bullets ( in a pistol) easier to size once coated, then I’ll run them again to gas check. A little more time, but easier to run thru.
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Post by bigbore5 on Nov 2, 2021 20:49:39 GMT -5
I love Miha's molds. They are artwork. But I have not experienced any problems with weight variations between the same pin types. What is your alloy? Are the cavities all the same? Maybe you don't have enough tin to fully fill out around the slim but longer pins. Are you casting hot and fast enough for the pins to stay hot?
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Post by sixshot on Nov 3, 2021 0:29:57 GMT -5
The Penta HP's can vary a bit more in weight because they can leave a bit of a burr around the mouth of the HP on some bullets. Also that burr can hold some extra powder when you powder coat.
It's usually not enough to make any difference with those bigger slugs in the 45, you might have to shoot some to find out but I doubt you can shoot the difference out to 100 yds.
Dick
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Post by bigbore5 on Nov 3, 2021 2:42:17 GMT -5
Going off what sixshot just said, I sha(e off extra powder pretty vigorously in a wire basket to clear it out of the hp cavities.
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Post by contender on Nov 3, 2021 7:30:02 GMT -5
I too shake the excess powder off using a plastic colander, over a plastic tub. It really reduces the excess powder in a HP.
I need to do a water jug test & record the results of my MP HP design in my 45. My alloy is usually pretty good in performance. Hmm,,,,!
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Post by sixshot on Nov 3, 2021 9:18:10 GMT -5
I shake the bullets pretty hard as well but the same static electricity that holds it on the bullets holds a little extra on the burrs if they are there. Like I said, not on every bullet & usually not enough to make a big difference but there is a small amount compared to a solid design.
Dick
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Deleted
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Post by Deleted on Nov 3, 2021 10:55:03 GMT -5
Thanks for responding. I switched to clear PC and had immediate improvement in quality of finish. The dark blue I have coats very thick. I switched to a stiff metal basket for sifting the extra powder off, and vigorous working the bullets with that has also helped. I cast a bunch of pentas and had good luck with outcome. I suspect that some of my inconsistency came from my having 1 of each pin variation in the mold at the same time. Also my lead is not scientific. I collect coffee cans full of scrap bullets from the berm at the range. I'm sure alloy variation exists. I've found a bunch of my own coated bullets. Often they look like they could be loaded right back up. I pick up the pancake ones that Were flattened by hitting my steel plates.
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dhd
.327 Meteor
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Post by dhd on Nov 6, 2021 19:25:17 GMT -5
I wish he would make a 280 or 290 grain in that style of mold. I have the Ruger Only and it makes my lead pot empty real fast. I also have the Carbine molds in GC and PB and admit it's not a favorite of mine.
I don't use the penta points on any of my MP's. I do love how a BB will stick in the 44-45 HP holes when powder coating. PITA, but it is what it is.
I've started using PC as soon as I started casting handgun bullets and found real quick clear coats very well for me. I tend to add at least 25% of clear in every color I use as it helps the coating. Straight clear is used for 20/1 alloy so I know at a glance what the bullets are.
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Deleted
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Post by Deleted on Nov 13, 2021 13:16:47 GMT -5
I wish he would make a 280 or 290 grain in that style of mold. I have the Ruger Only and it makes my lead pot empty real fast. I also have the Carbine molds in GC and PB and admit it's not a favorite of mine. I don't use the penta points on any of my MP's. I do love how a BB will stick in the 44-45 HP holes when powder coating. PITA, but it is what it is. I've started using PC as soon as I started casting handgun bullets and found real quick clear coats very well for me. I tend to add at least 25% of clear in every color I use as it helps the coating. Straight clear is used for 20/1 alloy so I know at a glance what the bullets are. Thanks for posting. I've decided clear is best for me with my technique. If you want to sell any unwanted mp molds please let me know. |
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