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  • dtknowles's Avatar
    06-16-2021, 09:23 PM
    I think it will be very hard to get a .30 cal. rifle that shoots quality factory ammo into .75 MOA to shoot cast into 1.25 MOA. Not saying it can't happen but premium factory ammo is pretty good these day. I check out bench rest comp results in "The...
    20 replies | 295 view(s)
  • dtknowles's Avatar
    06-12-2021, 05:48 PM
    Paint balls on golf tees. Tim
    509 replies | 17909 view(s)
  • dtknowles's Avatar
    06-05-2021, 12:44 AM
    Carry on but this is getting pretty boring now. Tim
    509 replies | 17909 view(s)
  • dtknowles's Avatar
    06-01-2021, 04:40 PM
    Yeah, I wonder about that crown. Very complex with a big countersink into the bore. This is the crown and lube star on my Savage Anschutz Tim
    692 replies | 31759 view(s)
  • dtknowles's Avatar
    05-31-2021, 10:20 PM
    This is my only handy picture of a lube star. My Ruger #3 .22 hornet, cast plain based bullet sized lubed 50/50 NRA at less than 1800 fps. This is after I lapped the crown, 1000 grit wet paper on an aluminum block. I will look for the before...
    692 replies | 31759 view(s)
  • dtknowles's Avatar
    05-29-2021, 11:10 PM
    First those machine rest targets are measured wrong. Second, I understand what you would like to see. I think the only way you can do that is to go to a match and ask people to show you their targets. I think some matches post the scored targets...
    509 replies | 17909 view(s)
  • dtknowles's Avatar
    05-29-2021, 11:02 PM
    I think what he is trying to tell you is that if you don't lap/polish your bore it will not have a superfine finish. As far as burrs, you would need to be very specific. Burrs come in all sorts of varieties. I think you are talking about sharp edges...
    509 replies | 17909 view(s)
  • dtknowles's Avatar
    05-29-2021, 10:55 PM
    Surface finishes are measured in micro-inches You familiar with this symbol. This is what you might get with 600 or 750 grit. Not a mirror finish but is probably as good as you will get with any barrel that has not been lapped. Certainly...
    509 replies | 17909 view(s)
  • dtknowles's Avatar
    05-28-2021, 07:57 PM
    I would not put quite so much blame on yourself. The gun/equipment is not perfect and the ammo is not perfect even if the conditions are almost perfect. I am seeing what I think are less than half inch groups. Do you think your errors are...
    509 replies | 17909 view(s)
  • dtknowles's Avatar
    05-28-2021, 07:14 PM
    dtknowles replied to a thread Backyard pistol in AirGuns
    I know you wanted a springer or pump up and I get it but I like my Crossman 2240 better than my 1377. Pumping it up makes a lot of noise. I would like a 2240 with a suppressor. I was shooting it today. Open sights standing offhand 25...
    13 replies | 1407 view(s)
  • dtknowles's Avatar
    05-28-2021, 06:16 PM
    New lead is created every day. Radioactive decay to lead Frequently, the quantity of uranium 238 and lead 206 are measured for radiometric determination of the age of rocks. The half-life with which uranium 238 decays to form lead 206 is 4.46...
    19 replies | 954 view(s)
  • dtknowles's Avatar
    05-27-2021, 01:03 AM
    If I was to choose. It would be easy. AutoMag. Tim
    24 replies | 1155 view(s)
  • dtknowles's Avatar
    05-25-2021, 11:32 PM
    Even an almost perfect shot travels in a spiral. All you can hope to do is tighten that spiral. Some of that dancing around is just at what part of that spiral does the bullet hit the paper. To shoot a quarter inch group at 50 yards, you need...
    509 replies | 17909 view(s)
  • dtknowles's Avatar
    05-25-2021, 11:08 PM
    I think that they reduced the powder charge if the temps when down or the barometer when down or both and vice versa. I don't know which way you would adjust the tuner. Which way for increased or decrease velocity to stay on the node, maybe someone...
    509 replies | 17909 view(s)
  • dtknowles's Avatar
    05-25-2021, 11:04 PM
    Larry I think took off his barrel band and I did too, free floated the barrel ahead of the frame and glassed the hanger contact. Kind of tee's me off but Hornady factory 37 gr. v-max factory ammo shoots better than anything I can load, shoots...
    28 replies | 1583 view(s)
  • dtknowles's Avatar
    05-25-2021, 10:46 PM
    If I was going to spend that kind of money, I would probably be spending it on something else. I am not afraid of spending money, I bought a Barrett M82A1 just a little over a year ago. I have a 357 mag. a used M15 Dan Wesson. I think it is as...
    24 replies | 1155 view(s)
  • dtknowles's Avatar
    05-24-2021, 07:18 PM
    Nice shooting. Sad about the dropped point. I don't think sonic ammo is causing you problems. I think you should recalculate the velocity numbers without the first shot from cold barrel. You seem to be getting one "bad" shot in every line/group...
    509 replies | 17909 view(s)
  • dtknowles's Avatar
    05-21-2021, 01:05 AM
    To each their own. Cargo pants beat a bag. Wear a belt bag on your weak side and you can still carry a handgun on your strong hip but I prefer to carry the hand gun in a shoulder holster. About the only thing good about an over the shoulder bag is...
    59 replies | 1824 view(s)
  • dtknowles's Avatar
    05-20-2021, 08:35 PM
    Does not seem right to call something soft and wet a pellet. Technically I think it is a glob glob NOUN informal a lump of a semiliquid substance.
    27 replies | 1379 view(s)
  • dtknowles's Avatar
    05-20-2021, 08:28 PM
    purse NOUN NORTH AMERICAN a small bag used especially by a woman to carry everyday personal items. I don't see a possibles bag carrying everyday personal items.
    59 replies | 1824 view(s)
  • dtknowles's Avatar
    05-18-2021, 11:27 PM
    I am not surprised you WW +2% tin is working well for you. That is a wonderful alloy when you don't need pure Linotype. I don't think alloying WW with Lino is a good plan. You would need to go 50/50 COWW/Lino to get to 2% tin and you would have way...
    19 replies | 646 view(s)
  • dtknowles's Avatar
    05-18-2021, 11:19 PM
    You should consider shooting a sigher every once in an while during the string to gage the windage.
    509 replies | 17909 view(s)
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About dtknowles

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About dtknowles
Biography:
Worked on our nation's space program on all three coasts
Location:
Southeast Louisiana
Interests:
things that fly or go bang or both
Occupation:
Engineer

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check