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Thanks Tony: And thanks for starting the thread. I have to say though, that there is something to the "old" 11 degree crown - some of the best barrels I have had have used this crown. What amazes me too (sorry if this is off topic), is how influential crown placement is. I have found that...

All: I have never been a fan of putting anything in the muzzle (even a live pilot). Some of the MI lands offer so little contact for a pilot that I am always worried about marring them. The bullet transition in this area is critical to overall accuracy IMHO. I have machined and used small...

Tony: Okay, lets take this piece by piece (following your numbered responses above): 1. I obviously do believe there are ways to optimize a chamber for a particular brand of ammunition, which is an has been subject to debate. The lot to lot variance you are using as a deterrent to this idea...

Tony: Okay, here I am as requested. I have been following this but was actually not planning to respond. There has been some intentional misinterpretation since my original post in 2011...

My apologies, this thread has kind of gone off the rails a bit. This reply is basically at the heart of my original question. HSS is (and has been) the material of choice for reamers, and the proper use of it regarding speeds, chip clearing and lubrication are pretty standardized. I...

Jerry: I order solid carbide reamers from JGS, they take a little longer to get but everything from JGS is of exceptional quality. Thanks, kev

All: I was wondering if any of you had used solid carbide reamers, and if so, could share your speeds / feeds and technique? I have been using them recently with good results - always interested in a better way or better ideas! For what its worth - I run carbide with more speed (540 to...

Just offering an opinion....... For many years I have used Devcon Plastic Steel (or Aluminum) - the 16 hour cure, for all of my bedding. It is an exceptional (but expensive) product. I bed with the putty, and glue in with the liquid version (less viscous than the putty - applied in a thin even...

First of all that's some great shooting, and a pretty competitive rifle to boot (regardless of the number of lugs it has or anything else). Please sweet baby Jesus tell me it at least had a tuner on it (placed in front of the muzzle)? LOL So much for the "art" of rimfire accuracy! kev

Thanks all - great suggestions! I am always looking for a way to hit the "easy button"...…..nothing replaces good old elbow grease though does it! Thanks again, kev

Good morning all: I had a dumb question to ask - how do you clean up your lathe and other equipment? I have tried light machine oil (like Remclean), but the years of brown cutting fluids and gunk are really hard to get off. I have seen some pictures of some high volume shops with immaculate...

Thanks Jerry: You may be correct, that makes total sense to me. I think any variable that alters the bullets exit position (including acceleration or velocity - or both!) would be a factor. Thanks for the post! kev

Good afternoon Tim: I have been shooting a really long time, and my memory isn't what it once was. When I started I was not using a "tuner" as they currently exist, but many of us were experimenting with extension tubes - and we recognized early on how much performance variation existed when...

It varies, the most important thing (to me, at least), is using two lots of different speeds that have performed well (they are known good performing lots to begin with). That kind of limits my options. The tuner position specific to a single lot is always preferable - I have just always...

All: Great thread, I have learned a lot! This is what I do (in the interest of full disclosure, I am self taught!) - I leave the carriage locked, and cut a relief at the shoulder so I can stop the threads. I have a Clausing Colchester, I thread at 125rpm with a positive relief threading tool...

Hi all: I hope all of you had a great Christmas, and wishing all of you a great and healthy 2021! Regarding bedding blocks - in position shooting (specifically prone) there is a very real advantage to using the same stock for everything, and switching out balanced barreled actions between...

Wow - that is really interesting! Thanks for sharing, and Merry Christmas! kev

Hi Bill: I appreciate the question, thanks for the post! I have no experience with unlimited rail guns (besides shooting a few at Kelbly's!), and no experience with a RF barrel that large. It makes sense to me though that the ability to adjust the position of mass would be beneficial - I just...

Good morning Paul: From a rest, in controlled conditions (I have access to an indoor 50 meter facility near my home). After I establish preliminary sweet spot position(s), I verify them in position (but I rarely change them). There have been times that defined sweet spots from the bench have...

Mike: Great post, I couldn't agree more. I do think that there are some sweet spots that are wider (or at least more tolerant) of velocity changes than others, but I fully agree that "tune" is velocity dependent - and subject to the variables you mentioned. When I am developing tuner...