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Nice looking facility. However, consider putting sound insulation in the front side of the roof, as that is where muzzle blast will reflect from. (As alluded to in a previous post.) Unmatted fiberglass, held in place by wire mesh is a possibility. Other possibilities exist, your local home...

Ah, the Ig Nobel Prizes. Awarded for science that makes you laugh - and then makes you think! And the winners are: CHEMISTRY PRIZE — Callum Ormonde and Colin Raston [AUSTRALIA], and Tom Yuan, Stephan Kudlacek, Sameeran Kunche, Joshua N. Smith, William A. Brown, Kaitlin Pugliese, Tivoli Olsen...

You stated it isn't a cause, but a weak firing pin spring IS a possibility. Weak mainsprings cause inconsistent strikes on primers, resulting in failures to fire. Blowouts also occur if the spring is too weak, as the only thing supporting the primer strike area is the firing pin - too weak a...

What type of F-Class rifle are you building? An F-T/R rifle (.223 Remington or .308 Winchester, or military equivalent cartridges) results in a different stock design than what is used for F-Open. (All other cartridges.) This is because F-T/R requires use of a foreend mounted bipod (or a...

Fluorescent lights tended to give errors with the skyscreens on my Model 43. Seems the "flickering" acted as a start/stop signal. Most artificial light setups I've seen for chronographs use incandescent or LED lights, with LEDs being the more common system today. Why? Because they use less...

Recoil reduction and suppressors. From a study from Finland: A summary of the study may be seen at http://guns.connect.fi/rs/suppress.html . I saw a suppressor design that used the muzzle brake on a rifle to reduce both muzzle blast and recoil. To effectively suppress most of the muzzle...

Some airsoft guns are realistic enough to get you killed by police responding to "person(s) carrying guns" calls. The number of incidents of this type has resulted in restrictions and bans on airsofts in various locales, including the State of California. Be careful out there - more than a few...

Looks like a DIY version of a Giraud. Thanks for the heads-up. :D

One online resource for loading for semiauto rifles is available from Sierra Bullets. The link is http://www.exteriorballistics.com/reloadbasics/gasgunreload.cfm . Written by a reputable firm, much of the information is sound, even if some of the tools mentioned might not be the most...

What brass are you using? There is a difference in volume between reformed Winchester .22-250 (lighter, thinner cases - more volume), reformed Remington (heavier cases w/ less capacity), and Norma made 6xc. A mid- to high pressure load for the latter two types of cases is around 39 grains of...

In 20 years of shooting long range highpower with a .308, I have seen exactly two bullet holes at 1000 yards using a spotting scope. The scope was a Kowa TSN-1, and the eyepiece was a variable power one (20-60x). Additional factors making the above possible were a significant amount of...

One issue everyone seems to have missed: Powder residue fires. Yes, they are a serious problem - a worker at Glock was killed by one back in 2003. Unfortunately, the only links to the story I can find are both to chat boards, but they do end up telling the same story. *...

What makes you think magazine fed 6 BR rifles don't exist? They do, and provided that magazines are good (single stacks are preferred), can be as repeatable and reliable as any other centerfire. Manufacturers: Bleiker: They make 8 and 10 shot magazine variants. Not cheap, but quality is...

Option 2 (which you didn't ask for, but you're getting the advice anyhow): Rebarrel the pistol. Buy a 1 in 6" to 1-8" twist, .30 caliber barrel and build a .300 Blackout or .300 Whisper on it. There's a wide range of good .30 caliber bullets, ranging from 110 grain flatbases to 240 grain...

What are Ig Nobel prizes awarded for? From the website at http://improbable.com/about/ Why We Do It Our goal is to make people laugh, then make them think. We also hope to spur people's curiosity, and to raise the question: How do you decide what's important and what's not, and what's real and...

Jerry, Think you're getting information for two different Palma matches confused. Bob Jensen (former Marine) used four Dillon 550 presses to load all the ammo for Palma 92. Powder measures used on these presses were Dillons. The only rounds loaded using more precise charges (calibrated by...

One set of instructions is at http://www.thehighroad.org/archive/index.php/t-591402.html. (Found via websearch.) Apparently, the 581 and the 541 were similar. A copy of the owner's manual for both may be found at http://nitrowrench.com/Manuals/Remington-541T-581S-Manual-1995.pdf . Also, one...

See if there's a need or use for them at your local U-pack and ship store. They accept foam peanuts, so am guessing clean air bags in good condition probably won't be turned away.

Looks like ATF is starting to crack down on this. Obviously, lawsuits have been filed.... http://www.military.com/video/guns/small-arms/new-gun-ban-for-pot-smokers/1200018748001/

Pot may be legal for adults in Washington, Colorado, and Oregon. Federal law still states that it is illegal, even if the President has stated this law won't be enforced. There is also the issue of pot use and firearms ownership and possession, which has not yet been determined. This is a...