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Posted: 2/24/2021 6:49:23 PM EDT
[#1]
I use these.
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Posted: 2/24/2021 7:58:53 PM EDT
[#2]
Read this first: https://www.reddit.com/r/NFA/comments/4fcsf5/if_youre_buying_a_suppressor_buy_an_appropriate/
And then buy them here: https://www.mcmaster.com/drill-rods/tight-tolerance-multipurpose-oil-hardening-o1-tool-steel-rods/ Mcmaster gets you on shipping but it would be worth it if you're buying for multiple calibers. |
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Posted: 2/24/2021 8:03:28 PM EDT
[#3]
Cheap is to pull the bolts and look down the barrel.
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Posted: 2/24/2021 8:32:09 PM EDT
[#4]
yea, i went with the McMaster-Carr rods. got a whole set for around $45, i think i did pay a bit for shipping though. it wasn't cheap to ship. the rods are heavy. i bought 22cal to 45acp
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Posted: 2/25/2021 12:24:39 AM EDT
[#5]
Quote HistoryQuoted: yea, i went with the McMaster-Carr rods. got a whole set for around $45, i think i did pay a bit for shipping though. it wasn't cheap to ship. the rods are heavy. i bought 22cal to 45acp Okay, sounds good, but I assume a lot of work went I to making sure the Surefire branded Geissele rod is perfect in tollerance. Why else would it be called the Super precision rod? ????? Can you count on a basic rod from MacMaster having the same straightness and tollerance? |
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Posted: 2/25/2021 1:26:17 AM EDT
[#6]
Quote HistoryQuoted: yea, i went with the McMaster-Carr rods. got a whole set for around $45, i think i did pay a bit for shipping though. it wasn't cheap to ship. the rods are heavy. i bought 22cal to 45acp Since those don't seem specifically designed for gun calibers, did you just use the Price is Right approach and get the closet size without going over? Like the .302" for 30 cal? |
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Posted: 2/25/2021 6:44:43 AM EDT
[#7]
Quote HistoryQuoted: Since those don't seem specifically designed for gun calibers, did you just use the Price is Right approach and get the closet size without going over? Like the .302" for 30 cal? Read the reddit thread linked above. .302" will hit the rifling on a .30 caliber bore and wont help you any. I heard one person mention using arrow shafts for their alignment rods, but I havent tried myself. Seems like that might be a lighter weight option with less risk of scratching the rifling. |
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Posted: 2/25/2021 9:03:26 AM EDT
[#8]
If you join the form1suppressor forum, there's a guy there with the handle techjunkie who sells nice alignment rods for a good price.
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Posted: 2/25/2021 12:46:38 PM EDT
[#9]
Quote HistoryQuoted: Since those don't seem specifically designed for gun calibers, did you just use the Price is Right approach and get the closet size without going over? Like the .302" for 30 cal? yes, i went by the chart i found on Reddit, but it's been posted here before. i know i got 22lr, .223, .308, 9mm, 45acp. figured i would get them all in advance to be safe. it's not too tight in the bore, there is very little play, but you can get an idea of how close it will be. mcmaster-carr has a tolerance specs on their website. even arrows are going to have a certain tolerance. i have a bunch of arrows for my bows and i think they're within .003 for straightness. problem is my arrow shafts are all 1 size. if you want to pay for marketing, and maybe a bit tighter tolerance, more power to you. honestly, i've shot a lot of my rifles w/o worrying about baffle strikes on my cans. oddly enough, i've had more baffle strikes on pistol cans than i have on my rifle cans (2 baffle strikes on pistol cans 45Osprey and Rugged Obsidian9, 0 on rifle cans but i probably just jinx'd myself) |
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Posted: 2/25/2021 1:50:27 PM EDT
[#10]
Quote HistoryQuoted: Cheap is to pull the bolts and look down the barrel. This is the correct answer. I couldn't tell you how many Form1's I've made, but I can assure you that I've never once used an alignment rod. |
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Posted: 2/25/2021 2:02:42 PM EDT
[#11]
Search for “drill rods” and the specific diameter. Select a diameter just a few thousandths under the caliber’s land diameter.
McMaster sells them for <$10. I find them useful for inserting into the bore and using to indicate off the bore in the lathe. They’re also for suppressor alignment check. |
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Posted: 2/25/2021 2:40:42 PM EDT
[#12]
I find the 79 dollars for the surefire rod far cheaper than the 400 dollar rebuild of the surefire can, the cut and crown of a sub moa 6.8 barrel plus shipping
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Posted: 2/25/2021 4:49:20 PM EDT
[#13]
Quote HistoryQuoted: If you join the form1suppressor forum, there's a guy there with the handle techjunkie who sells nice alignment rods for a good price. This is the best answer. No gambling on whether or not your rods will arrive straight. Color coded ends. Great product. 
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Posted: 2/25/2021 4:59:55 PM EDT
[#14]
Quote HistoryQuoted: Cheap is to pull the bolts and look down the barrel. This. I have never used rods. I just look from one end or the other, preferably breech end when possible. It ain't hard to see if they're off. |
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Posted: 2/25/2021 5:05:58 PM EDT
[#15]
I've been happy with the carbon fiber rods from Capitol Armory.
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Posted: 2/25/2021 5:14:40 PM EDT
[#16]
Purchased whatever McMaster had for .308 (don't recall exact diameter) and the first one arrived bent. Not hard to see compared to a straight line (I used the solid folding tonneau cover on my truck bed). Sent them a pic and they sent me another no charge.
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Posted: 2/25/2021 5:26:32 PM EDT
[#17]
Quote HistoryQuoted: Cheap is to pull the bolts and look down the barrel. This right here. The only time I would consider an alignment rod is if I can't look down the barrel from the chamber side. |
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Posted: 2/25/2021 8:13:01 PM EDT
[#18]
I've been using wooden dowels - easy to turn down to any size.
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Posted: 2/25/2021 11:46:54 PM EDT
[#19]
Quote HistoryQuoted: Okay, sounds good, but I assume a lot of work went I to making sure the Surefire branded Geissele rod is perfect in tollerance. Why else would it be called the Super precision rod? ????? Can you count on a basic rod from MacMaster having the same straightness and tollerance? In a nutshell, marketing and yeah, pretty much. Drill rod is well within acceptable tolerance for checking silencer alignment. Chop a piece to about 10”, round the ends and if it slides down a clean bore easily, it’s straight. You have to remember that most can companies are making their bores well over size expecting tolerance stacking so all you’re really doing is making sure you have a reasonable amount of clearance. It’s not like you’re making, changing or adjusting anything, you’re just seeing if the rod hits the can. |
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Posted: 2/26/2021 9:59:35 AM EDT
[#20]
Quote HistoryQuoted:The only time I would consider an alignment rod is if I can't look down the barrel from the chamber side. I'll put a flashlight with the bore inspection adapter (90deg fiber optic piece) into the breech and look down the muzzle. Align your eyes so the barrel is "straight". You'll immediately notice if the silencer end cap is wonky. |
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Posted: 2/26/2021 11:50:44 AM EDT
[#21]
McMaster Carr hardened drill rod, I got the .2969 for my 300 BO and it is tight enough to lightly engage the rifling enough to twist.
Drill rods Source for bore diameters. |
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Posted: 2/26/2021 11:57:02 AM EDT
[#22]
Quoted: Read this first: https://www.reddit.com/r/NFA/comments/4fcsf5/if_youre_buying_a_suppressor_buy_an_appropriate/ And then buy them here: https://www.mcmaster.com/drill-rods/tight-tolerance-multipurpose-oil-hardening-o1-tool-steel-rods/ Mcmaster gets you on shipping but it would be worth it if you're buying for multiple calibers. Quoted: McMaster Carr hardened drill rod, I got the .2969 for my 300 BO and it is tight enough to lightly engage the rifling enough to twist. Drill rods Source for bore diameters. I also use drill rods from McMaster. I will add that I had to lightly file the ends as they had some burrs from where they were cut. I just added a chamfer to the ends. They work perfectly. |
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Posted: 2/26/2021 12:25:05 PM EDT
[#23]
Quote HistoryQuoted: This is the correct answer. I couldn't tell you how many Form1's I've made, but I can assure you that I've never once used an alignment rod. Quote HistoryQuoted: Quoted: Cheap is to pull the bolts and look down the barrel. This is the correct answer. I couldn't tell you how many Form1's I've made, but I can assure you that I've never once used an alignment rod.  But if you must and you're worried about straightness, just find a flat surface and gently roll them back and forth. You'll see any warp or bend. That said, don't bother. Pull the bolt and use your peepers. |
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Posted: 2/26/2021 2:09:58 PM EDT
[#24]
So far the Mk1 eye-ball has done me well as a multipurpose calibration and alignment tool.
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Posted: 2/26/2021 5:37:37 PM EDT
[#25]
Quote HistoryQuoted: Yup, I bought McMaster-Carr rods before I made my first can, but truthfully they're a waste of time and I no longer use them. Well, not for alignment checks anyway - they've mostly been cut up and otherwise used in lathe projects or for practice since But if you must and you're worried about straightness, just find a flat surface and gently roll them back and forth. You'll see any warp or bend. That said, don't bother. Pull the bolt and use your peepers. This. ^ I’ve got all the McMaster rods, but it’s a waste of time and money. Eyeball it. |
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Posted: 3/1/2021 11:12:08 PM EDT
[#26]
I just look down both ends of the barrel with a flashlight once I pull the gun apart. If you have good eyes I think this works well on not super tight bores.
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Posted: 3/2/2021 12:58:05 PM EDT
[#27]
I don’t fret over such things
Eyeball it and blast |
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