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Post by foxtrapper on Jul 16, 2011 7:43:42 GMT -5
I want to check the throats on a couple .510 cylinders. Having trouble seating .510 and .511 sized cb cartridges fully into the cylinder.
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Post by 2 Dogs on Jul 16, 2011 17:24:49 GMT -5
Ok, so let me ask YOU a couple of questions.
What are you using to measure your .510 and .511 size cast bullets?
WHO built the cylinder you are using?
Will your current ammunition "press fit" into your cylinder throat?
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COR
.375 Atomic
Posts: 1,522
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Post by COR on Jul 16, 2011 19:34:35 GMT -5
I had some WFN bullets hang up in my 45 Bisley because they wouldn't completely seat. Just that gun but I shot a LFN without a hitch and it shot them well. Maybe doesn't matter here but just throwing it out there.
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Fowler
.401 Bobcat
Posts: 3,559
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Post by Fowler on Jul 16, 2011 23:20:29 GMT -5
If you have WFN bullet hanging up, or resisting you from allowing seating of your rounds normally then typically the throats are tighter than your bullets. The simplest test is chamber a loaded cast bullet in the cylinder and when it starts to resist seating take the cartridge back out and see if you have a ring in the shoulder of the lead from the chamber. If the ring is present then they are tighter than the bullet. If there is no ring it could be other things such as a very tight chambered cylinder being smaller than your sized cases or a exceptionally dirty cylinder but those would both be very odd.
This does not necessarily mean you need to open your throats up (that depends on the size of your barrel and that needs to be slugged to answer that question) but you at least need your bullets sized smaller.
If you dont have pin gauges you can often take your cylinder down to most any machine shop and ask them to pin it for size. It takes seconds to do and is well worth the trouble just make sure the cylinder is completely clean when you do this. I doubt anyone would charge you for doing this but they might, while pin gauge sets are not very expensive the .500 to .750 set is a pretty expensive set as they are all so big.
Hope this helps
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COR
.375 Atomic
Posts: 1,522
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Post by COR on Jul 17, 2011 6:35:51 GMT -5
I seated them a little deeper and worked up a good load although many told me not too because of pressure....Then Lo and behold our bery own Mr. John Taffin puts out a new article in Handloader about just that type of thing in the current issue...his results were nothing short of spectacular for accuracy and it saves on powder for you frugal types.
I only had the one .45 that did that. Maybe this will help.
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Post by 2 Dogs on Jul 17, 2011 7:56:32 GMT -5
Guys, the original poster has never stated he is shooting a WFN or what...?
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Post by foxtrapper on Jul 17, 2011 8:19:34 GMT -5
Thanks to all. Fermin here's the story, Cylinders built by Reeder, the bullets are Montana bullets sized by them to .511 WFN 350 gr GC. The second bullet is a Mountain Mold that is a 65% meplat 375gr gc that I size.511 with a push through Lee die. Alox is the lube. I also have a .510 Lee sizer that I tried. I also tried a taper crimp die with so so results.I cannot push the Montana.511 or MM bullets through the cylinder by hand ,even using a pencil to add some power. If the cylinder is sparkling clean and I push the cartridges in I can fire a cylinder full. Once there is fouling shooting stops right there! 4227, CCI large pistol mag primers are the components.I want to measure the throats ,if they are tight I will send them back to be cut. I have not slugged the barrel in either gun. I'm also thinking of buying some factory loads to rule out my reloading technique . Thanks for any help you can provide  |
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Post by 2 Dogs on Jul 17, 2011 10:10:14 GMT -5
Foxtrapper, first, just cuz the Montana box says .511" doesnt mean that is what they are.
2nd, Just cuz your Lee push thru die says .511" doesnt mean that is what they come out of the die at.
Now, both dimensions may well be correct, but one doesnt really know until you measure them with a micrometer, NOT a dial indicator.
As to your throats in the cylinder, they may well be undersize, which in this case is GOOD because oversize cannot be corrected. However, at this point, since we do not know with certainty what diameter cylinder throats we are dealing with or what exactly your bullets measure as to diameter we need to figure that out first.
PM sent
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Post by foxtrapper on Jul 17, 2011 12:13:58 GMT -5
2 dogs IM sent ;D
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Fowler
.401 Bobcat
Posts: 3,559
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Post by Fowler on Jul 17, 2011 12:52:11 GMT -5
2 Dogs aint whistling Dixie here. Dont believe anything unless you have measured it yourself!
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Post by foxtrapper on Jul 17, 2011 13:18:03 GMT -5
I hear ya Fowler ;D Brewing a plan with 2Dogs ;D
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