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Can chokes be opened by shooting over many years?

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Hi Unregistered,

On July 29th, this site will be moving..! No, really - it's "moving" to another physical location - including servers, gateways, routers - everything - including my coffee cup...

So, from the date of July 29th through July 30 or 31 (shooting for these dates, but - as always, I'm at the mercy of my ISP who has to install the lines to the new location - and we actually get them running ;) ). But - this site, cloud servers and main web will be OFF LINE.

Now, please save these dates!! Please - don't be "that guy" who emails me on the 30th to tell me you "can't open the Parker Website". I'll already know it is offline - and also know that you are "that guy"...

I'll take this notice up and down over the next week or so - and leave it up during the final few days before shutting it off on the 29th..

John D.

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07-13-2018, 06:34 AM

#35

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J.B. Books PGCA Member

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Quote:

Originally Posted by Dean Romig

A dial indicator or digital bore micrometer is the only way to go. It may read 'cylinder' at the muzzle with a graduated drop-in gauge but the bore could widen several thousandths behind the muzzles for a few inches.

Counting pellet holes and doing the math to get percentages is tedious.

The only times I shoot at paper is to find POI and to determine what shot size gives the best patterns with a particular gun.

Sometimes you can learn some interesting things beyond that. For instance I have a straight grip VH 12ga 28" with .013 constriction in the right barrel, it patterned 48% at 40 yards with 1 ounce of lead 6. I have a Remington 1900 12ga with 30" bbls and .014 constriction in the right barrel and it patterned 72%. One point of choke difference between them and one gun shoots Skeet/IC and the other Full. That is something very good to know whether you are hunting or shooting clays.

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