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Lilja tight bore rimfire barrel?
- Thread starter PUP
- Start date
Bolosniper
New member
Dan Lilja makes a very good and competitive 22 rimfire barrel. It is a 4 groove, tight bore configuration that has been very successful.
Martyn4802
New member
One of my shooting buddies up here had a Lilja tight bore 22 Rimfire barreled rifle built by Butch Hongisto that was a screamer. He won lots of matches with it, including shooting a 248 on the RBA target at 50 yards. The RBA target is the most difficult of all 22 Rimfire targets to shoot having a .10" diameter 10 ring.
Martyn
Martyn
Match chamber. If you are going to have a tight bore, you need a tight chamber for best results.What chamber reamer would be best?
Pick up a copy of Precision Shooting and write to Bill Calfee via the editor. Bill has built quite a number of the top prize winning .22 bench guns, and likes the Lilja barrels. He could probably recommend a chamber for you based on your action with that barrel. I know he likes to burnish his chambers after cutting, with a special tool. It is also worth going back over past issues of PS to learn how he slugs the .22 blanks to figure out which end will be the muzzle and which the chamber, and also how much to cut off the blank at each end? Besides, his folksy writing style makes for an extremely entertaining read.
Regarding the tight barrel, a lot of cast bullet shooters find they need the hard cast bullets about 0.002" to 0.003" over groove diameter for best rifle accuracy, rather than the traditional 0.001" over. It's a statistical observation, not a theoretical notion, and nobody knows why that should be true, just that it can be measured to be so. With the softer swaged lead in the RF it makes sense that number could be bigger. Certainly the soft lead squeezes into the barrel pretty easily, and I expect Dan Lilja has come up with his groove diameter just as empirically as the cast bullet guys came up with their bullet oversizing number. That's good. It means it works based on test experience rather than theory, also.
If you don't want to wait for Calfee's response, ask Lilja. He probably knows what Calfee is using.
Regarding the tight barrel, a lot of cast bullet shooters find they need the hard cast bullets about 0.002" to 0.003" over groove diameter for best rifle accuracy, rather than the traditional 0.001" over. It's a statistical observation, not a theoretical notion, and nobody knows why that should be true, just that it can be measured to be so. With the softer swaged lead in the RF it makes sense that number could be bigger. Certainly the soft lead squeezes into the barrel pretty easily, and I expect Dan Lilja has come up with his groove diameter just as empirically as the cast bullet guys came up with their bullet oversizing number. That's good. It means it works based on test experience rather than theory, also.
If you don't want to wait for Calfee's response, ask Lilja. He probably knows what Calfee is using.
He's working on an article for Precision Shooting according to what he's said on BRC. As far as reamers, I can't remember all of the details scattered throughout his posts. For instance, see post #26 at www.benchrest.com/forums/showthread.php?t=48126&page=2
(Note that he has others post his comments for him, but he signs them.)
That reminds me, I need to renew my 2-year subscription to PS.
John
(Note that he has others post his comments for him, but he signs them.)
That reminds me, I need to renew my 2-year subscription to PS.
John