For what their worth, here's my thoughts on your OP. If your gun is shooting .1 to .4 in groups I wouldn't use the word consistent. Also at what distance are you shooting and how many shots in a group? Shoot 3 separate groups at least 10 shots or more per group at 50 yds and take an average. This will be closer to what the gun is really capable of shooting. As to barrel tuners. There really aren't any mixed reviews. Anyone that really knows anything about 22lr accuracy knows tuners work! But NOT on a 16in barrel CZ.
Readers should view the claim allegedly made by Joseph with caution and skepticism. Simply putting a weight on the end of any .22LR barrel doesn't in itself improve results. If any size weight would do, there would seem to be little use for adjustable tuners. Serious shooters avoid using random weights on their barrels.
I have tried tuner my buddy has tried tuners we both use limb savers now. Cheap to try!
I suggest before investing in a tuner try a higher tier of ammo such as CX or even Midas+ though you are getting fairly decent results with SKRM it is not consistent enough to determine if the barrel would benefit from a tuner. if the barrel is capable, you will see it with the better ammo.
A follow up on my reply to your OP. HI NV Shooters reply is dead on as far ammo is concerned .While Sk is decent ammo that's all it is . Not in the same class as the upper grades of Lapua, Eley and RWS. I can tell you without a doubt . Don't waste your money on a Harrels style tuner. Thet are designed to work on barrels 24 to 27 in. They will not show any improvement in grouping on a 16 in barrel. There may be some tuners designed for barrels that short. I but I really doubt it. I would spend that $150 lot testing.
How many different lot numbers did you try? in the past when you could get multiple test lots perhaps 3-4 out of 10 different lots would shoot ok with just 1 and if lucky 2 that would shoot well enough to but in volume.
We don't seem to be getting anywhere with this but I'm good for one more reply. First is your gun. For a $700 gun a CZ is a well built accurate gun. It is still a $700 dollar gun with that level of accuracy. You can't expect it to shoot with guns costing 3 times that much. It sounds like yours shoots pretty good as is and the only way to improve its accuracy without throwing a lot of money at it is with ammo. You said it doesn't like Eley BB and Lapua centerX . I find this strange as most barrels I have dealt with that shoot Sk match will also shoot centerx and midas+ better. Eley BB and Lapua centeX is offered in lots. Some lots are crap and some outstanding. I don't know how much of each you shot, but you can't draw conclusions shooting one box of one lot. "Lot testing"
Any one lot is made on one production run during the course of a single day. Once made, it's not possible to remake it.
I completely understand your situation being in NY. as for how much of any lot there would be I can't say for Eley but Lapua CX & Midas+ is limited to what I have seen under 15 cases or 1500 boxes.
Meh, not my experience. I found the lighter tuners to be less temp sensitive as opposed to the heavier tuners were typically good for about a 20-30 degree temperature swing, +/-15 degrees each way before I had to start changing settings to keep in tune. The one I use on my 18" anschutz 1712 medium barrel weighs only around 3.5 oz IIRC. They made me take it off as it is considered an "attachment" and therefore illegal for hunter class in silo. I did not see shifts in temp like the heavier tuners. I could use that one year round without adjusting it.
Wrong, your theory is incorrect . Experience is the best teacher .
Like its writen 30in barrels are on F-class open and F-TR class rifles from where the tuners migrated into PRS
I been using light tuners for the last 6 years 4.10-4.50 oz. average weight. the tuners are standard Harrell I turn down on a lathe. I shoot in high 20's to 100+ degree temperatures and make no changes on the tuner settings. I shoot RBA and some ARA. because tuning is about bullet exit timing, I found that with less weight I have a wider window to shoot lot speeds from 324m -330m with no need to make any setting adjustments.
