Posted: 8/3/2008 6:46:01 PM EDT
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Hi All, Not sure if I have an issue with my new CLE 22lr upper front sight.... Went to my local range to zero at 25 yards and found that from the rear sight mechanical zero i had to move up 16 moa (64 clicks). My first thought was that I would need to lower my front sight. However, when I went to lower my front sight I was only able to lower 2 clicks (180 degrees) which equates to 2.5 moa (only equates to lowering my rear sight by 10 clicks). Is this normal for 22lr? if my rear sight is already at 64 clicks, will I have enough elevation to get to 100 yards? Thanks for any info. Sorry if this is a newbie question. Regards, Ed |
I would have thought that Frank would have set them up a bit better than that . A detailed instruction sheet should have been provided. A piece of paper costs what? Compared to what you paid for the upper.Oh well, I wish RRA would put together a dedicated 22 rim fire upper. With their dedication to a quality product at an affordable price, you can bet they would eliminate the competition. The DPMS 22 RF upper I bought about ten years ago at Perry is really great. They quit making them and I was told they would have another design available soon. That was at least five years ago! The market is wide open for a dedicated 22 RF upper right now. When you have only one available, you can bet there will be problems and a high cost per unit! Dave McGrath |
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I modified my old Colt M16A2 FSB a couple of years ago and finally got to install it. I did all of the mods as per my friend Steve Wagner's website. Steve is a pretty good gunsmith and makes/modifies cost saving enhancements for AR's, Mausers, etc. I tapped the post bore all the way through but didn't install the set screw yet. I was waiting until I had a firm grip on which post and what height for my post before locking it down. Then I had a lot of issues with my new barrel installation, which ultimately centered around my FSB. I think I have it all worked out but am not 100% comfortable/confident yet. I am not the greatest shot in the world (Classified Expert), but dropped 70+ points right after installing this barrel. Last year I shot one 6 all year; this new barrel was routinely dropping at least two sixes at each position and yard line! This last match after some tinkering with the FSB installation yielded my personal best score with a Miss offhand! I put one up around 11 O'clock. I never shoot high and left; low and right is more like it or just 8's being just high, just low, just left, just right??? A fluke maybe??? One or two more practice sessions and one more full course match at the end of August should be the final verdict. Then I will update my inital post on that subject if it is still findable. Well the point is is locking the post in place worth the trouble? Or is it one more variable on the lines of a fix looking for a problem? |
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I install the back up screw in all of my front sight bases. Seems to make the front post a tad more stable to the effect it doesn't take a .001" or less of a set after each shot affecting windage left and right. Probably not needed but for piece of mind, I feel better knowing it is there. Get your rifle zeroed then run the bottom or back up screw up tight to the front sights post. For those that wish to do this to their own front sight base, you will need a 8 x 36 bottoming tap. The bottoming tap is better because you are not starting the threads and you will need the full length of the tap to complete the job. You will also need a 8 x 36 set screw 3/8" long. I personally like to use set screws 3/16" long. Then that way you don't see the back up screw after the job is completed. This is the same length I use for the 4 FSB locking screws. Cuts down on my set screw inventory and provides a neat, better looking job. This modification can be done without removing the front sight base off of the barrel  . You may have to modify a Allen wrench by shortening it to start the back up screw into the base.Dave McGrath |
I go with four set screws in my FSB's! Don't cut corners is my motto! The tower sticks out like a sore thumb. If it gets hit or bumped, it can move. The movement of .001 can really make a difference in your windage zero at 200 yards . The excuse of using just two set screws for a better gas seal just isn't true. All that have four set screws all function just fine!It's not necessarily true that you get what you pay for today .Dave McGrath |
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Dave I agree on the side set screws. I have 2 on each side of mine. I will attest, I did not put enough med. strength loc tite on mine and it came loose during a regional match worst feeling in the world i re-set after. i could figure what was causing shifts i could account for in the wind, the set screw in the bottom of the front sight seems more for peace of mind than actual definate. there is one serious note on it though. If you set properly you can alway make sure the sitght is right prior to shooting no tampering or changing during cleaning and forgetting to fix. 
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Found out the hard way about just two screws in the P-100 last week. Shot the practice, zeros were good. Next morning, in OH, shot a 7 at 3:00, checked my windage, good,,shot looked good, so didn't adjust, figured I jerked, match nerves you know Shot again,, nuther 7 at 3,, , maybe I jerked. Adjusted 2 clicks right, shot a 8 at 3,,shot still looked good,, adjusted 4 more clicks. Shot a 9. but didn't feel like a good shot, so didn't adjust. shot another 9, damn, didn't feel good so adjusted 3 clicks right, shot just off the 10 ring, adjusted 1 more click and finished up with 3 X's and 1 10 for a 89,,, damn, set the tempo for the rest of the day. My windage was off a full rev, found out that I had bumped the FSB,, from now on I will use four screws and Loc-tite that muther on. 'Borg |
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Hey Ken, that's a tough break. Texas to Ohio and two little bitty screws let you down. I think there's a song to that effect or was it tears? Well like they say, lessons learned hard are lessons learned well! I did something dumb a couple years ago. You see I was putting my AR back in the bag after the match. I had put my gear under the covered firing points directly behind our firing line in the shade. I was standing on concrete. Someone asked me a question and I began talking. After the conversation, I picked up my gun bag. I didn't zipper the case  . The rifle bag has it's zipper on the bottom so the rifle hit the deck. The first part of the rifle to make contact with the hard concrete was the front sight tower. OUCH! The sound of expensive steel hitting concrete is totally sickening! The tower actually chipped the concrete. The remaining part of the rifle bounced and landed in the grass. Not too much damage but guess what? The rifle still held it's zero! Four screws works!Dave McGrath |
Sorry about that Ken. I ran into a couple of shooters from Texas but they were not with you or your crew. Maybe next year .One reason could have been that I didn't arrive until Tuesday. I only shot the CMP games this year. Cutting back from the long days of the P100 and the NTI. Age, health and the heat, I just don't excited as much as I used to! Stayed off base again this year. Three years in a motel that is now called The Port Side Inn, in Port Clinton. Oh! BTW, I can't do those body building exercises in the Vaile pits anymore. Aren't those carriers just the slickest ones you ever operated! Well, now Rod. range is slated to get them too! If there is anything that drives shooters away from a range is carriers that don't operate! The guy who designed them is probably anti-gun! Related to Brady or the Clinton's! Good Lord! I was on 126 one day and on 130 the next. I was worn out before I got to fire a shot! Dave McGrath |
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I'm with ya on the carriers,, next year I might take some dry lube with me and " accidentally" get over spray on them. LOL We stayed at the Commodore Perry hotel this time,, may do the same next year. Oh, and we tried that restaurant you talked about,,, not great. Ordered lemonade and got unflavored, cloudy water, told the waitress that her tank was out and she wanted to argue, service was very slow, and was uncrowded, the food was OK but not great. 'Borg |
For all you Reb's. Here are some tips about eating in restaurants North of the Mason / Dixon Line. They are: 1 Talk like a Yankee. Forget about that Y'all BS. It impresses nobody in the North! 2 Lemonade in the North is just as you described it! 3 Never , and I mean NEVER get into a confrontation with your waitress! 4 If you told the poor gal that her "tank" was out, she could have taken that as smart remark about her husband! 5 Remember, the waitress has direct contact with "her" friends in the kitchen!  Dave McGrath |
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WOA says to apply Loctite 290 (Green, Medium Strength, Wicking Grade) to the set screws and around the FSB barrel channel after it is zeroed. The wicking grade is applied to screws/surfaces that are already assembled. Medium strength Loctite comes apart with hand tools. I used Loctite 272 (Red, High Strength) on the set screws only. I zeroed the FSB, removed on set screw and coated with red Loctite, retightened, and repeated on the opposing screw. High strength Loctite requires heat and hand tools to remove. This is my first FSB that wasn't pinned on and I am still experimenting a bit. |
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I use a laser bore sighter to set up the FSB prior to actual zeroing. At the range, I tweak the FSB by turning the screws (if needed) with the aide of a dial indicator (Ray-Vin) attached to the FSB. Once zeroed, I remove each of the four set screws individually and use blue Loctite on them. Never a problem with them coming loose and come rebarrel time, I can turn the screws back out without damaging them. I have found that the Red Loctite 272 better used on the float tube threads. As far as the green wicking loctite used for a sealer, I don't use it because with four set screws I get a very good gas seal. Any gas leakage around the FSB is minor and dosen't effect the function of the rifle. After about a hundred rounds have been fired a carbon seal has formed anywhere there was gas leakage. Dave McGrath |
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