Looking for reamer specs for .22LR optimal for Lapua
- Thread starter sparker
- Start date
USMCDOC
Silver $$ Contributor
Scott,
i can tell you that most of the guys that are shooting ABRA are using a 22 Bentz chamber from what i know.. and i know that mine absolutely loves Center-X! When you are hitting dots on a 30 yard target at 50 yards with a 10/22 it makes the others notice!
My 10 X-III loves Center-X as well and it has an Eley EPS chamber in it.
Hi-NV Shooter
Gold $$ Contributor
Scott,
Kevin Nevius (Team Lapau shooter) has a reamer made by JGS it is called the Nevius 22
I have had 3-barrels done using the specs. all are great shooters. one barrel as tested at Lapua with C-X 12mm@ 50 18mm@100 barrel was clamped in the jig. in the stock outdoors 7.5mm at 50yds. off a Pappas rest.
USMCDOC
Silver $$ Contributor
Thank you for bringing this one up.. i had forgotten about that chamber!
Wonder if using Kevin's Nevius 22 reamer would make enough difference in accuracy to be worth the expense of buying one? I've used a PTG EPS reamer on all four of the custom 22RF barrels I've done so far for a Stiller 2500XR & a couple of CMP 40X/XB actions. All shot very well with SK Rifle Match and Pistol Match. I tested about a dozen different lots of Lapua Center-X in these bbls, but the only lot I found that was close to as consistent as RM was no longer available in quantity by the time I'd had enough good conditions to be able to test at 100yds.
Will be doing a barrel for a new V-22 action just as soon as it gets here - that's the only reason I'm considering another reamer. As far as that goes, Mike Bush has a reamer design he calls Ravage that JGS grinds for him that's shooting very well out past 200yds with SK Rifle Match. Two very different applications here, I believe - single shot BR vs. repeater fed rapid fire in PRS-style rifles.
Will be doing a barrel for a new V-22 action just as soon as it gets here - that's the only reason I'm considering another reamer. As far as that goes, Mike Bush has a reamer design he calls Ravage that JGS grinds for him that's shooting very well out past 200yds with SK Rifle Match. Two very different applications here, I believe - single shot BR vs. repeater fed rapid fire in PRS-style rifles.
Hi-NV Shooter
Gold $$ Contributor
flatlander,
The Nevius reamer is a 1.5 degree, my understanding is that Eley shoots best with a 2-degree. I found it does make a very big difference in that .5 degree difference, at least in my barrels.
however since you are using a repeater don't know if it would make a difference as you stated. I shoot BR
On another site reamers and chambers have been discussed. Kevin Nevius has even spoke up.
I shoot Lapua. And have a 1.5 degree chamber and a 2 degree chamber.
Due to time constraints the 1.5 chamber has yet to be trialed. Will try it at the Barn next week.
The 2 degree chamber shot a 750 card in a barrel that was about to become ballast.
Both chambers are off JGS reamers. With the 1.5 reamer off the Nevius print which he has made public.
I shoot Lapua. And have a 1.5 degree chamber and a 2 degree chamber.
Due to time constraints the 1.5 chamber has yet to be trialed. Will try it at the Barn next week.
The 2 degree chamber shot a 750 card in a barrel that was about to become ballast.
Both chambers are off JGS reamers. With the 1.5 reamer off the Nevius print which he has made public.
Edward Manning
Silver $$ Contributor
Hi-NV Shooter
Gold $$ Contributor
My current ARA UL rifle Evelio McDonald in Texas barrel was done in 2015. he did 3 barrels for me. all 3 shot really well.
A friend locally does my barrels now with my own Nevius reamer. all are shooters as well.
Lee
TRSR8
Silver $$ Contributor
If not mistaken I believe TKH has stated he cannot really tell the difference, he’s done a lot of good barrels.
With so many variables from breech to crown, kinda tough to pin it down to a .5degl leade difference.
Hi-NV Shooter
Gold $$ Contributor
Tim, you do realize this thread is from 2017. based on the benefit of having the same barrel originally chambered for Eley in 2013 -2014 and then in 2015 rechambered for Lapua using the Nevius specs. 1.50 degree I saw a great improvement. could be the ammo as Lapua did start to make inroads on how their ammo shot. also, could have been I went to lite tuners in 2015 as well. but I still believe the switch to a 1.5 made the vast improvement.
as for Tony, I am don't think at his level there are many more things that can improve on what he is doing or seeing. as for his barrels I want to guess he doesn't just order a single barrel and chamber it and start shooting it in matches and be done with it. his microscopic evaluation of not just the barrel but everything else is why he is at the level only a few can dream of let only achieve.
Lee
TRSR8
Silver $$ Contributor
Yes Lee I do however it got reinvigorated and todays considerations are the same.
Tony has done barrels for others as well, supplied by others.
The point really is that unlikely you can pin it down to .5 deg. Maybe it’s a better reamer, better chamber overall…..far too many possabilities.
Tony has done barrels for others as well, supplied by others.
The point really is that unlikely you can pin it down to .5 deg. Maybe it’s a better reamer, better chamber overall…..far too many possabilities.
10XSHOOTER
Gold $$ Contributor
Look at a Winchester 52D reamer.
Hi-NV Shooter
Gold $$ Contributor
O
but as I pointed out the referenced barrel is the same one not a new one chambered, so I have to believe the change did make the difference. which change may be the question leade angle or less engraving?
Lee
or it could just be that using information from Kevin's work and testing is what has given the improvement I see and continue to see. using minimum engraving has proven to me to work.
but as I pointed out the referenced barrel is the same one not a new one chambered, so I have to believe the change did make the difference. which change may be the question leade angle or less engraving?
Lee
I would like to add a comment on bullet engraving.
I'm not trying to convince anyone to change their opinion but consider this.
A lead bullet must be started down the bore absolutely straight. It cannot self-correct.
I don't know if this applies to jacketed bullets but suspect it does.
Meaning if the bullet starts crooked it will make the whole trip crooked. That will cause the bullet to be out of balance as it spins its way to target. Not a good thing.
TKH
I'm not trying to convince anyone to change their opinion but consider this.
A lead bullet must be started down the bore absolutely straight. It cannot self-correct.
I don't know if this applies to jacketed bullets but suspect it does.
Meaning if the bullet starts crooked it will make the whole trip crooked. That will cause the bullet to be out of balance as it spins its way to target. Not a good thing.
TKH
urbanrifleman
Site $$ Sponsor
Do you know how short he cut the chamber?
Hi-NV Shooter
Gold $$ Contributor
So the most important thing is the chamber concentricity to the bore?
Regardless of how much or how little engraving is
Lee
Hi-NV Shooter
Gold $$ Contributor
I don’t know the length of the chamber but a live round (Lapua) only has 0.075-0.080 stick out as it just touches the leade
Lee
TRSR8
Silver $$ Contributor
Not a match chamber by current standards.
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