Poor man's tuner

[Hi-NV Shooter]

It's a 6mm Beggs, I know it's centerfire but harmonics are harmonics to a point.

Ok if this is true, then if you reload for a .223 BR and get .075 ctc groups at 100yds. with the load and tuner setting and if harmonic is harmonics then you should be able to get the same groups with say factory loaded American eagle 855 FMJ's right?

Lee

 

[Ron Gorski]

I would "guess" that after a very few shots the rubber would start to break down at the contact points and to some greater or lesser extent change the dampening effect of the tuner.

You my want to try sorbothane.

 

[half]

BGinvestor,
Have you tried different torque values on your action screws? I shot groups with SK, centerx, and eley target changing the torque in 5 inch pound increments. It really helped my groups having the torque right. With your tuner idea and the action screws you might really be able to shoot little groups.

 

[Bginvestor]

BGinvestor,
Have you tried different torque values on your action screws? I shot groups with SK, centerx, and eley target changing the torque in 5 inch pound increments. It really helped my groups having the torque right. With your tuner idea and the action screws you might really be able to shoot little groups.

good suggestion Half, I have been meaning to do some testing on action screw torque. I recently pillar/bedded my stock, so right now its between 25 or 30 in-lb on both.

Do you like the front/rear to have the same torque value?

 

[half]

I use the same value for both screws. I need to test more, haven't had time.
I went from 20 to 45 in pds. SK and target both shot best around 25. CenterX shot the best at 40. I have some RWS special match and Eley Club to run the same test. If I can find the target, I will post a picture. Keep us posted on your tuner.

 

[PigButtons]

Sorry if you consider this thread drift.
Somewhere I read a thread or article on action screw torquing for savage rifles. I think it is probably the same for most others. The guy snugged up both front and rear, front first. Then he shot a test group, then started tightening the front screw in 5 in-lbs increments until it went through improvement then continued until the groups began opening up, then loosened back to best torque. Then he did the same with the rear screw until he had what was optimal for that rifle.

I don't know if it worked for multiple brands of ammo using just one torque setting.

 

[Bginvestor]

BGinvestor,
Have you tried different torque values on your action screws? I shot groups with SK, centerx, and eley target changing the torque in 5 inch pound increments. It really helped my groups having the torque right. With your tuner idea and the action screws you might really be able to shoot little groups.

half,

Nice range day, almost zero wind..

This session focused on action screw torque. Same torque on both action screws. Same Eley Club ammo, same everything, except action screw torque from 20 to 35 in-lb. There's some trend changes which was very interesting to see.

Two , 5 shot groups per torque; after identifying the best torque, I went back to 25 in-lb, and shot an additional two more groups.

Bottom-line, its worth testing!

 

[Bginvestor]

This gun eats up CCI standard velocity! Here's the first (and only) group after setting to best settings from Eley club.

Time to put this back into the safe with a smile .. lol

We'll do more testing w/ CCI later on..

 

[Bginvestor]

Sorry if you consider this thread drift.
Somewhere I read a thread or article on action screw torquing for savage rifles. I think it is probably the same for most others. The guy snugged up both front and rear, front first. Then he shot a test group, then started tightening the front screw in 5 in-lbs increments until it went through improvement then continued until the groups began opening up, then loosened back to best torque. Then he did the same with the rear screw until he had what was optimal for that rifle.

I don't know if it worked for multiple brands of ammo using just one torque setting.

I think its worth testing.. Oh, I've own some Savages, and setting the action torque for best groups is a real thing..

 

[JohnKielly]

Some of the earliest tuning was carried out by British Commonwealth fullbore riflemen who in those days used factory military ammunition of their own country. It was found that repositioning the foresight on their rifles (they were clamped in place by a collar) fore or aft could sharpen up the accuracy - or otherwise. A depth micrometer to increment with precision from the muzzle was a desirable tool - a verniers for the more cowboy shooters.

 

[boltfluter]

Ok if this is true, then if you reload for a .223 BR and get .075 ctc groups at 100yds. with the load and tuner setting and if harmonic is harmonics then you should be able to get the same groups with say factory loaded American eagle 855 FMJ's right?

Lee

In my opinion "no. Bullet quality is still a huge factor to consider.

Paul

 

[half]

This gun eats up CCI standard velocity! Here's the first (and only) group after setting to best settings from Eley club.

Time to put this back into the safe with a smile .. lol

We'll do more testing w/ CCI later on..

View attachment 1219843

I WISH mine shot cci standard like that!

 

[Hi-NV Shooter]

In my opinion "no. Bullet quality is still a huge factor to consider.

Paul

And that was my point, RF is RF can't change bullets or alter powder load you have what you have!
unlike CF as you pointed out you can change the bullet and even the load to suit the rifle's harmonics aka tune!

Lee

 

[1066]

Weight in front of the crown tunes gun's not behind

Bit of a sweeping statement I would think:
Using barrel vibrations to tune a barrel (geoffrey-kolbe.com)