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GUNS Magazine Digital May 2011 - Page 34
is too hard and gives an unrealistic test of bullet expansion, though, and the firm offers a conversion formula to replicate the depth of the path in ballistic gelatin. Since you will be measuring relative expansion, it should work fine for your science project, since you can photograph the cavity more easily, recover the bullets and reuse the media. BALLISTIC TECHNOLOGIES 5320 N. PIONEER RD., GIBSONIA, PA 15044 (724) 444-4770 WWW.GUNSMAGAZINE.COM/ BULLET-TEST-TUBE BROWNELLS 200 S. FRONT ST., MONTEZUMA, IA 50171 (641) 623-4000 WWW.GUNSMAGAZINE.COM/BROWNELLS GELATIN INNOVATIONS 5024 ROSE ST., SCHILLER PARk, IL 60176 (800) 442-8263 WWW.GUNSMAGAZINE.COM/ GELATIN-INNOVATIONS MIDWAYUSA 5875 W. VAN HORN TAVERN RD. COLUMBIA, MO 65203 (573) 445-6363 WWW.GUNSMAGAZINE.COM/MIDWAY-USA • JEff JOHN • q: Ballistic Gelatin I am in 8th grade at Fairbanks Middle School and am doing my science fair project on ballistics. My scientific question is: If the weight of the bullet and grains of powder in a cartridge are changed, how will the ballistics change? My school and science fair board have approved my project. I am doing my testing at Richwood Gun and Game Club, where I am a junior member. My Dad and some of the other members who are all NRA Certified instructors are helping to make sure everything is done safely. I am shooting five different weights of .30-06 bullets at 200 yards. I am measuring the velocity of the bullet with a chronograph. I am measuring the path and change in velocity by the rise or drop in the bullet at the target. I want to measure the difference in energy by the distance the bullet travels into ballistic gel at 200 yards. My problem is I have not been able to find how to make ballistic gel or where I might buy some inexpensively. I was wondering if you might help me by advising where I might find how to make it or buy it. q: 1890 Refinishing a: Ryan Richileau Union County, Ohio The ballistic gelatin used by the FBI and ammo factories is very sensitive and must be kept at a constant temperature in a refrigerator and used relatively quickly after it sets up. If you’d like to know more about ballistic gelatin, try Gelatin Innovations. The firm’s website offers pretty clear directions for making ballistic gelatin as well as the kits. Another method, and one more accessible, is the Bullet Test Tube from Ballistic Technologies. The firm’s products are available at Brownells or MidwayUSA. While expensive, the Bullet Test Tube is reusable, more stable and easier to handle. Some complain it I purchased a slide-action Winchester Model 90 .22 WRF rifle at a garage sale. Unless Winchester made a model without bluing, someone removed all the blue from this gun. I know collectors discourage refinishing original guns, but if all the finish has been removed, I would guess it would not be considered “original.” What is your opinion on making this gun look new again? Does Winchester redo guns? Would it be considered “original” if Winchester did the work? Do you know what they might charge? a: Randall Beecham Bellville, Ohio You’re in one of those grey areas where it depends on how much money you want to sink into the project. Finishing the gun to the original condition will mean refinishing or replacing the stock as well. If the rifling is perfect or darn near, I’d think about refinishing. Sadly, none of the factories will work on their older guns. It’s partly liability, but mostly because they don’t have the parts anymore. None of the factories still use the older finishing processes anyway, so it won’t look 34 WWW.GUNSMAGAZINE.COM • MAY 2011