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Lyman Replies COPY COPY COPY Tom Griffin 02/24/2016 Dear Mr. MacCluer, At this time, I do not have anything to report regarding any changes to the Gen 6 powder box/bushings. I did receive your letter however and have forwarded a copy of it to our supplier for their review and...

Letter to Lyman COPY COPY COPY February 15, 2016 Lyman Products Corp ATTN: Tom Griffin 475 Smith Street Middletown, CT 06457 RE: Gen 6 Powder Measure Binding Dear Mr. Griffin: Have you made any progress in correcting the Gen 6’s tendency to bind up? (I have enclosed copies of our Email...

A possible fix for the Gen 6 I have replaced the factory seals around the dispensing tube with solid 3mm-thick Teflon (PTFE) rectangular sheets. Drill a 25/64 hole, insert the tube with a factory seal, trace and cut with a box cutter. The resulting dimensions are approximately 3X18X19 mm. My...

COPY COPY COPY (Email to Lyman) Tom: Any progress in curing the bind up of the Gen 6 powder measure? I've tried enlarging the diameter of the O-ring seals so that they no longer turn with the dispensing tube but their sticky rubber has too much stiction. I am waiting for sheets of 3mm...

Lyman Gen 6 malfing redux Tom: No reply yet. I have delayed a follow up letter because I wanted to try a fix. I used a rat-tail file to open up the seals so they would not bond so tightly to the dispensing tube. It made no difference. ---binding recurred after about 300 grains. I am now...

No, they are not O rings. They are disks of thin rubber-like sheets with a hole at the center that (too) tightly fits the dispensing tube. These disks rotate within square sleeves that seal away the outer compartments from the powder. In my opinion the problem is that the disks fit the tube too...

Lyman replies COPY COPY COPY Tom Griffin tomg@lymanproducts.com 7:47 PM (21 hours ago) to chuck Dear Mr. MacCluer, In regards to your recent letter, powder should not be able to get behind the rubber seals to bind up the powder feed tube. If this is happening, we would suspect that the...

COPY COPY COPY Lyman Products Corp 475 Smith Street Middletown, CT 06457 800-225-9626 800-423-9704 860-632-2020 October 6, 2015 RE: Gen 6 Powder Measure Failure Dear Lyman: Your new Gen 6 powder measure is ideal for benchrest shooting but for one flaw: the rotating dispensing tube...

ooops I disremembered some basic facts: 1) the modal nodes are not moved when stiffness is changed. 2) the first mode has no nodes. (I was thinking by false analogy to a fly rod.) Stiffness affects only frequency and tip excursion. I refer to my favorite source, a must-own: "Boundary Value...

At this point I haven't ordered the barrel from Hart. Waiting for Dwight S. to return from Bonneville flats.

Greg: That's probably good advice. But last winter I built up a match-quality AR upper using a White Oak 20-inch fluted squad designated marksman barrel that weighs only 41 ounces. It out shoots at 200 a White Oak heavy service match upper, although to be fair I used the much stiffer DPMS...

If I understand what Boatwright says, the dominant effect is not tip deflection but the vertical velocity imparted to the bullet as it exits. Additional stiffness moves the (first mode) node outward and increases frequency. These work in opposite ways on vertical imparted velocity. A computation...

I drew a certificate for a Hart barrel at the 2013 IBS Group Nats last week. I thought it might be interesting to take a flyer: What has been the experience with fluting a HV contour barrel in order to make LV weight? The increased stiffness would decrease max longitudinal displacement but...

yikes! I'll get right to it. Pascal: I'm very sorry about his snafu. I put a rifle up for sale in classifieds and then wondered why I got no inquiries. Turns out the web site was not reflecting. Now fixed as of yesterday. I'll get on your Accugauge order soonest. I can also be reached at...

On the way back from the Winds of Manatee we stopped exhausted late at the Holiday Inn Express in Groveport, OH. For the first time in my life I didn't take my rifle to the hotel room. Late that night some creeps broke into several cars in the hotel lot. When I asked the clerk if this happened...

Would you believe that no one has snapped up this URL until last week? Chuck

build your own better rifle You can easily/cheaply put together an upper that will beat any off-the-shelf upper. Buy a lightweight 16" barrel from White Oak (www.whiteoakarms.com) with a target crown, then glue it in with Loctite red to a DPMS competition receiver from Brownells. Use a...

This powder has shot very well for me in the last two meets. Here is a chrono comparison between it and N133 in my BAT LV PPC: (29.4 grns 8208) gave 3302(fouler), 3311, 3340, 3326, 3314, 3302, 3304, which is au=3314, es= 37.36, and sd=14.21. In comparison, (29.2 grns N133) gave 3311, 3328, 3272...

Boyd: I used a double throw with the pistol measure to get 29+ gr. (A double throw reduces the standard deviation by a factor of 1/sqrt(2).) Chuck

Tim B: I didn't realize Jack and Joe used the Jones. I'll look into it if my attempts to mill one of my own are unsuccessful (but it's looking good). Chuck