bore diameter?

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Bub
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bore diameter?

Post by Bub » Sun Nov 25, 2018 5:43 pm

I couldn't find any info on CanikTP's actual bore size. Is there a standard size?
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NWcityguy2
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Re: bore diameter?

Post by NWcityguy2 » Sun Nov 25, 2018 6:54 pm

The standard bore size for all 9mm guns in .355". But that isn't to say that is the bore size in your specific gun. The easiest was to find out is to drive a slightly oversized pure lead slug down the bore and measure the end result. This can be a fishing weight or a bullet cast from pure lead and air hardened.
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Tejas Products
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Re: bore diameter?

Post by Tejas Products » Sun Nov 25, 2018 7:03 pm

NWcityguy2 wrote:
Sun Nov 25, 2018 6:54 pm
The standard bore size for all 9mm guns in .355". But that isn't to say that is the bore size in your specific gun. The easiest was to find out is to drive a slightly oversized pure lead slug down the bore and measure the end result. This can be a fishing weight or a bullet cast from pure lead and air hardened.
Just noticed your profile picture. :ymapplause: ^:)^ :-BD
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Bub
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Re: bore diameter?

Post by Bub » Sun Nov 25, 2018 7:17 pm

How do I measure a slug with 5 lands? Sounds like a dumb question, but....
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NWcityguy2
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Re: bore diameter?

Post by NWcityguy2 » Sun Nov 25, 2018 8:34 pm

Bub wrote:
Sun Nov 25, 2018 7:17 pm
How do I measure a slug with 5 lands? Sounds like a dumb question, but....
Most barrels have 6 lands and grooves, no? I did a bit of research and found this thread on another forum. As a side note, Cast Boolits has been a great source of information several times in the past.

http://castboolits.gunloads.com/showthr ... ove-barrel

Are you looking to shoot lead bullets, or make them yourself?
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Re: bore diameter?

Post by NWcityguy2 » Sun Nov 25, 2018 8:37 pm

Tejas Products wrote:
Sun Nov 25, 2018 7:03 pm
NWcityguy2 wrote:
Sun Nov 25, 2018 6:54 pm
The standard bore size for all 9mm guns in .355". But that isn't to say that is the bore size in your specific gun. The easiest was to find out is to drive a slightly oversized pure lead slug down the bore and measure the end result. This can be a fishing weight or a bullet cast from pure lead and air hardened.
Just noticed your profile picture. :ymapplause: ^:)^ :-BD
Thanks, that was 11 years ago in Muqdadiyah, Iraq. It's amazing how time flies (when I'm not deployed).
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Bub
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Re: bore diameter?

Post by Bub » Mon Nov 26, 2018 8:21 am

Thanks NWcg2. I'm a CB member, but never found that post. I pour and load for some of my military rifles and thought I would find an accurate cast load for my new Canik. I sold my SW 59 to pay for the Canik. That old 59 was a sprayer. I decided to go with .358 with the TPSF. I did run some sized .356" 125 gr rounds through it with 6 to 8" groups at 25' with graduating powder weights. (W231). I recovered a bullet and it barely showed any rifling marks. Hence, my original question. I loaded some 115 gr FMJs from hi-tech with 4.7gr of W231 and got 2" groups at 25'. I do luv that Canik.
Another thought is to hone my Lee 356 sizer to 357 as it's worthless at .356 for my use.
So who shoots cast and at what size?
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Re: bore diameter?

Post by NWcityguy2 » Mon Nov 26, 2018 1:25 pm

Probably 90% of the ammo I shoot is cast, of my own make. For 9mm, there is always the simple solution of shooting .358 bullets exclusively. I've been doing that for years because off and on I will own a gun that will key hole .356, and I make my ammo in large batches.

When it comes to lead, it is almost pointless to compare it to jacketed/plated when it comes to accuracy. If it doesn't like a lead bullet of a certain diameter, or at a certain speed, or at a certain pressure, it doesn't matter if it will group jacketed bullets just fine. Lead accuracy is it's own beast.

Slugging the bore is still important, because there is more to lead accuracy than bore diameter. But that is one important variable to figure out.
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Bub
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Re: bore diameter?

Post by Bub » Mon Nov 26, 2018 6:50 pm

NWcityguy2 wrote:
Mon Nov 26, 2018 1:25 pm
Lead accuracy is it's own beast.
You got that right!!
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Re: bore diameter?

Post by reloader762 » Fri Jan 04, 2019 8:29 am

My theory with cast lead in both pistols and rifles when it comes to cast lead bullets is go big or go home. It's much easier to size it down than trying to figure out how to modify the bullet to make it fatter. I've had a bad experience with any mold that drops a bullet at .356" so I purchased a NOE .358 124 gr. TC mold and it drops right at .359" all my NOE mold usually drop .001" larger than spec. I PC an size them to .357" an they shoot just as accurate as any plated or jacketed bullet in my TP9SA.

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Bub
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Re: bore diameter?

Post by Bub » Fri Jan 04, 2019 6:42 pm

Yep. I'm reloading 358-125-RF bullets. I tried them 358 and 357. Squeezed 357 with 3gr 700x or 5 grains of Longshot, oal 1.017. 45-45-10 lube. Longshot has the edge on the 700x but they both shoot great. Longshot having the softer recoil. I tried CFE with 4.8gr being the best for a group but not that good of a group. Being new to CFE, I'm thinking it's more of a powder for jacketed hi velocity loads. Purty bullets R762 !
That 124gr NOE mold is next on the list. I picked up a toaster oven at goodwill. Gonna try my hand at powdercoating . It seems that's the way .
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