Posted: 4/21/2010 6:12:46 PM EDT
| I have a Glock 27 that I use for ccw. I also switch to my LWD 9mm conversion barrel for range use. I switch back and forth often and was wondering how many times I can re-chamber the 40S&W round before it can cause a problem? I do switch what round gets chambered but how many times is too many for 1 round? |
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As long as there's no obvious wear or damage to the round and if it hasn't been underwater you can chamber it over and over and over and over and over and over and over and over ......without any problems.
Of course YMMV. Personally when i get to the range ill use up my SD rounds and load new ones. (about 2-3 times per year) Ammo is built pretty tough I've shot 12 ga. rounds that were over 30 years old with no problems. and I've shot duds of brand new federal ammo. |
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Truth be told, doesn't really matter how many times you chamber 'em, as long as they're not getting set-back, and as long as the rim of the case isn't getting dinged up.
Feed angle on Glocks is extremely straight..............by nature it minimizes set-back. Even in .40. Eventually, when chambered repeatedly enough times, that bullet's gonna start to get pushed back into the case. Best bet is to measure rounds that have been chambered more than 3 or 4 times, comparing to an unchambered round (of exact same type, of course). Once they start to get set-back, even a little bit, toss 'em in a box, to be shot downrange next time you go. |
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Best bet is to measure rounds that have been chambered more than 3 or 4 times, comparing to an unchambered round (of exact same type, of course). Once they start to get set-back, even a little bit, toss 'em in a box, to be shot downrange next time you go.
This is the system I use. Also, when reloading the mag, I will strip a few rounds out, then put the ejected round deep in the mag, then load the gun with a new bullet, loading it from the magazine. Eventually all rounds will have been the chambered round. |
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Quoted:
As long as there's no obvious wear or damage to the round and if it hasn't been underwater you can chamber it over and over and over and over and over and over and over and over ......without any problems. Of course YMMV. Personally when i get to the range ill use up my SD rounds and load new ones. (about 2-3 times per year) Ammo is built pretty tough I've shot 12 ga. rounds that were over 30 years old with no problems. and I've shot duds of brand new federal ammo. You only get to the range 2-3 times a year? 
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Quoted:
Quoted:
As long as there's no obvious wear or damage to the round and if it hasn't been underwater you can chamber it over and over and over and over and over and over and over and over ......without any problems. Of course YMMV. Personally when i get to the range ill use up my SD rounds and load new ones. (about 2-3 times per year) Ammo is built pretty tough I've shot 12 ga. rounds that were over 30 years old with no problems. and I've shot duds of brand new federal ammo. You only get to the range 2-3 times a year? Yes....
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People throw bullet setback up as OMG your gun will blow up if you keep chambered the same round.....
But I haven't seen this. I re chambered several guns I own 25 times to test this. There was no bullet setback. 9mm, .40 .45 My 27 I will chamber the same round 4-5 times over a month. But at months end I shoot my 2 carry mags anyway & reload them. |
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the whole point of rotating rounds with set back out of your gun is so they DO NOT get shot! especially in the 40 small amounts of set back cause the pressure in the case on firing to go up dramatically and possibly dangerously.
If I see/measure set back in a round, it is put on the side, I use a kinetic bullet puller to pull the bullet partially out of the case then send thru my seating die to put it back to proper oal. If you fire rounds with set back,you MAY get a way with it but it is definitely playing with fire! |