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  1. B

    300 PRC rifling marks

    Something sounds strange to me about .015 neck tension. The bullet is about .308. Are you saying that you make the case neck ID .308 minus .015 (that is, 0.293), seat the bullet long, then chamber it? Jamming a .308 bullet into a 0.293 neck would be very heavy neck tension. If I was going to...
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    Winchester #41 issues

    One far-out possibility. In rare cases, the firing pin punches through the primer cutting a tiny round cup from the primer metal and leaving it on the point of the firing pin. In ever less common cases, that little cup of primer metal ends up inside the bolt and stops the firing pin short of...
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    Lapua .223 Brass Broke in Half

    One problem with the Redding solution, you need a new set of shellholders for each case type. This note is a variation on the competition shellholder idea: Buy these shims. They cost $15 from Brownells. Using your standard shellholder, set up your die so it contacts the shellholder...
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    Lapua .223 Brass Broke in Half

    Thought experiment: imagine that new cases are exactly chamber size in all dimensions. You load 'em up and shoot. Suppose your load is very hot - high pressure. The pressure will push forward on the chamber shoulder and back on the case head and stretch the chamber. At most shooting...
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    Scale drift A&D Fx-120 vs Sartorius

    I have a Sartorius 213-1s. I use with an AT v2. I turn it on before a loading session, enter the weight I want, and start throwing charges. My target 308 load is 41.52 grains of IMR 4064. I will accept 41.50, 41.52, and 41.54. It almost never underthrows - say 1 in 300 maybe better. I get...
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    Condensation

    I'm not sure what the current name is for this but water dissolves into air. As the temperature increases, air holds more water. When you heat a tea kettle and steam comes out, that steam is invisible. The water/air mixture called steam looks like air because the high-temperature water is...
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    Do I need a comparator?

    When using dies with 7/8-14 threads, one eighth of a turn is about nine thou. One quarter turn is about eighteen thou. When the current standard seems to be two to three thou I would expect that either would lead to under-sizing the shoulder and reduced brass life. I use the Hornady gauge...
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    Giraud trimmer blade position

    I think you need to move the cutter. If you loosen the set screw then gently push the case down, the cutter will be centered on that case mouth at that spot. Tighten the set screw. An improved approach, chamfer a case mouth (both inside and outside) with a hand tool so that the case mouth...
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    What is the most dumb-a$$ thing you did lately?

    300 PRC, inconsistent at 1k, been screwing with it for a few weeks. Yesterday, I noticed that the barrel was not quite tight - about 1/8-turn. Stripped it down to the receiver, pulled the trigger, inspected the bedding, cleaned all the screws, new loktite, and re-torqued everything. How...
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    308 Muzzle Velocity with 175gr

    I use 175 SMK and 4064 with Lake City LR brass and 210Ms, velocity around 2610. Recoil is light, accuracy to 800 is good even with my crummy shooting. The difference between 2600 fps and 2700 fps is just math. Even with moving targets beyond 300, it is a minor change in hold - again, it's...
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    Loaded my first Handloads ever. 6.5cm. Issues/questions

    There are several reasons that you see the swipe, one of them is pressure. Based on other signs such as the shape of the fired primer, the firing pin depression, and your other fired cases, most likely you are not yet getting high pressure. If a fired case fits easily into the chamber then...
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    Reloads, or Burned Out Barrel?

    What did it do at 100 yards? I had an expensive scope go bad. Over time I got a fuzzy image at 1k, parallax dial didn't do anything, and it was shooting 1 to 1.5 mil patterns. Swapped on a known good scope, did a 100 yard zero, dialed for 1k and shot a nice group. The gun is good but the...
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    Help bumping shoulder...strange results

    To each his own. My combination of techniques gives me very consistent headspace. I can't think of a technique that works better than that. For what's worth, I select a tool based on its utility and fitness to a particular purpose, not it's cost. In my opinion, "cheap" and "works really...
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    Help bumping shoulder...strange results

    I agree on feeding, I have the same problem. You didn't read my post. I said: If you want a -.001 bump use the .007 shim. If you want -.002 bump use the .006 shim. If you want a minus one thousandth bump, use the .007 shim. Remember, I had him start with a .008 shim and then adjust the die...
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    Help bumping shoulder...strange results

    If you like being able to adjust the bump, here is a technique. buy these shims put the .008 shim under your die lock ring. Adjust die and size cases until the the brass is being sized to the same as the chamber* lock down the die lock ring** If you want a -.001 bump use the .007 shim. If...
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    What causes this? (Neck "Lip")

    You explained your process: Process: Deprime: Lee Depriming Die Wet Clean: FART, no pins 3 hours Dry: Oven @ 200 Size: Hornady Die (no mandrel) Full Length, no bushing Neck Mandrel: Wilson Wet Clean: FART, no Pins 1 hour Dry: Oven @ 200 Load I may be over-simplifying this but ... do each step...
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    MOA and Milrad Turret Calculations

    When viewing a target and your POI is not at your POA, why would you care how many inches off you are? Your aiming device is what you use to aim with and it measures angles. It has (or should have) turrets with some angle measurement and a reticle with tick marks in the same angle units - MOA...
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    Can I use this powder?

    Regarding 10 rounds of "vintage" H1000 powder at charge 76.7, the old stuff shot the same as the new stuff. At 1k the POI was pretty close to 76.9, 77.0, and 77.1. As I went up from 76.9 to 77.2 I had clicks and showed a tiny bit of ejector dimple - more powder, more click. I'm going to go...
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    Can I use this powder?

    I am shooting a 300 PRC with Berger 230s, Lapua brass, and federal 215M. It seems to like new H1000 77.0 grains. I made 15 each 76.9, 77.0, and 77.1 and 5 rounds of 77.2 using new H1000. I plan to shoot them on Saturday. I plan to work my way out to 1k using 76.9 then shoot a group. Then...
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    Can I use this powder?

    I asked Hodgdon. They sent the attached doc (original was in Microsoft Word format). It says that bad powder will contain reddish clumps and smell sour (acidic) instead of smelling of acetone. They also said to pour some on a sheet of white paper and look for red dust. I have no red clumps...
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