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Quote from: jiminthe burg
Went to the range Friday with my Chrony, G-20 stock and a 6" L/W barrel, a 610 w/ a 6.5 " barrel & a 1006.
My thanks to Shadow for posting a picture of his Chrony on ironing board w/ a piece of steel to protect it and to intercooler who posted a picture of his w/ bamboo skewers and white elect. tape at the top. I think both are great ideas. Another poster said sooner or later, you are going to hit an unprotected Chrony or the metal rods or both.
I wanted to test some 800X and Blue Dot ( B D ) loadings. Previously tested 8.6 grs of 800X under a 165 gr Precision Delta fp and was impressed with it using the 6 " L/W in my G-21, as the gunsmith had the G-20, and thought it was very accurate. Also wanted to shoot some more 180 gr hard cast fp ( bnh hardness of from 18-20 ) using 8 .5 grs of Blue Dot. The hardcast came from Master Cast (in Pa.). All 800X loads were 8.6 and all loads for the lead were 8.5 of BD
I was using mixed, previously-fired brass w/ Federal primers by hand using a RCBS hand primer (I do not clean the primer pockets or trim all cases to the same length) I was using a Charge Master to throw the charge. COAL was 1.26. Also got several errors on the Chrony until I dropped the ironing board another notch and my poa seemed to be in the middle of the
"triangle" on the Chrony and errors stopped. I was > of 10 ft behind the Chrony and at least 25 yds from the targets.
The accuracy of the G-20 with either barrel was horrible compared to using the G-21 w/ the 6" L/W. I don't understand.
Using the 6' L/w barrel in the G-20 w/ 8.6 800 w/ 165 fmj-fp the average for 10 shots was 1221 w/ highest 1248 and lowest 1189. On the same load w/ stock 20, average for 8 shots was 1131 with the highest of 1169 and the lowest of 1103.
Using the revolver w/ 800, average for 6 shots was 1165, highest 1178 and lowest 1148. This seemed to have the most consistent velocity-1157; 1182; 1178; 1149; 1148; 1179. Using the 180 gr hard cast over 8.5 grs of Blue Dot gave an average of 12 shots of 1032-highest 1073 and lowest of 988
With the 1006, using 800 (8.6grs ) average for 8 shots was 1127 highest 1162 and low of 1108. Using the cast lead of 180 and 8.5 grs of Blue Dot average for first clip was 1016 w/ high of 1043 and low of 971 and average of 1014 with high of 1050 and low of 987 on 2nd clip. Both were for a full clip of 9. I do not know why my Charge Master was throwing some charges of 8.7 and 8.8 grs of Blue Dot and I don't know why I did not return those charges to the powder holder and not manually adjust them which is probably why I had the lows that I had.
My hands are not steady so I was resting them of a pillow on a table top and after my cataract surgeries, I have trouble lining up the sights.
Accuracy on the 610 and 1006 was very good.
W/ the 800 ( using the 610) 4 of 6 shots were w/i 1" and w/ the B. D. all 6 were with in a 2" w/ 3 shots touching
W/ the 1006 using 800, 6 of the 9 shots were within 2" Using the B. D., 7 of the 9 shots were within 1.75" w/ three shots touching
I know this is probably amateurish but I had a good time and it seems to make it more fun when you know the velocity of your rounds.
I still am reluctant to use lead in my 3rd gen G-20. Do you guys think those lead bullets are hard enough (18-20) to use? Any thoughts and what do you look for in terms of leading? I had a Ruger P-89 that had lead in the barrel from some cheap remanuf. ammo but I do not want to mention the name of the Co. as they are still in business so I have a good idea of what lead in the barrel looks like.
Thanks again Shadow for the suggestions re protecting the Chrony and for mentioning this site on the Glock forum. Glad to see that you are a moderator.
Jiminthe Burg, there were three specific characters that were causing the posting issues. The 1/2 on the end of the barrel length formatted in superscript/subscript, the double curly quotes and the single curly quotes. I opened your document and replaced these characters, after some trial and error, and got the post up as a quote. Many word processing programs do these changes for you auto-magically without your knowledge. Notepad is often a better friend when typing something up to be pasted into the forum.
Thanks sqlbullet-I appreciate your help and suggestion re using note pad if I want to use copy and paste again.
Wordpad is a better option for copy/paste, into an HTML editor. It will retain the font and spacing, but will discard the offensive coding (it should show a message saying so when you paste into Wordpad, something like, "some formatting will be lost". Wordpad should give you a WYSIWYG display of your text. Using an older version of Word will prevent this, too. If your document extension is ".docx", you're gonna have issues with it outside the Word version you are using.
Yea I'm going to get longer dowels from WalMart to use with the white tape. The skewers are just a little small in length to not hit one every so often.
Chrony must be in it to sell units and parts. They easily could make a nice setup that wouldn't die from impacts.
Quote from: Intercooler on July 12 2012 09:11:42 AM MDT
Yea I'm going to get longer dowels from WalMart to use with the white tape. The skewers are just a little small in length to not hit one every so often.
Chrony must be in it to sell units and parts. They easily could make a nice setup that wouldn't die from impacts.
I've punched mine, twice. Both with a Glock 36. We were troubleshooting POA issues, which were VERY evident as the 230's beelined for the chrono. Both times right through the center, and somehow missed the vitals. It's a Chrony Beta Master (or was that Master Beta?), so the smart parts and display are detached. They would have been detached, if they weren't, that's for sure. The Chrony went back together (duct tape AND Gorilla tape), straightened sheet metal, realigned, and it still calibrated dead-on. Replacement parts are inexpensive, but not necessary, this time. I prefer flimsy wood dowels over metal, or stiffer wood/bamboo, uprights. If you hit one, it's much better that it gives, completely, rather than damage the plastic mounting holes. My objective with it is to have it completely detached from anything that might take a bullet impact. Independent frame with long steel ramp, and self-supported uprights. They aren't that expensive to repair or replace, but the nickels and dimes do add up. Gorilla tape ain't cheap.
Ever replace one of the sky screens? My back one has a shock crack in it and I would like to change it out.
Quote from: Intercooler on July 12 2012 02:16:12 PM MDT
Ever replace one of the sky screens? My back one has a shock crack in it and I would like to change it out.
No, but they aren't expensive. Midway and Chrony sell them, $8/pair from Chrony. All of my hits have been through the chassis or bent upright wires. I've scattered the screens, but not broken one, yet. I try to use it without the screens, when I can. Cloudy days are good w/o the screens.
http://www.shootingchrony.com/products_replacement.htm
I have a chrony too. Lots of empty space in there that projectile can pass through without causing too much headache.
I do like Shadow's set-up with the ironing board though.
I saw a neat thing a guy did wit his chrony, he set it up inside a plastic white trash can, his setup was nice, but I think his can was not translusent enough except for a very bright day. I am still looking for a simular item, but may use a sheet of plastic and roll it into an upsidedown "U" and fasten to the Ironing board to diffuse the bright light.
Another nise feature of the Ironing board is that you can fasten a target on the back end of it.