CZ455, Bed the barrel or not?

[Shultz]

Hi All,

I've got a 22lr CZ455 Varmint that I put in a Boyd's Pro varmint stock AKA tacticool. It's shot pretty good so far but I noticed the last time I shot it I was getting some weird flyer's.

Long story short, I found the action screws had loosened up as the stock had compressed a bit... I only torqued to 25"lb using my Fat wrench.

So, Time for pillars! I've got them installed, bedded the receiver at the same time using Devcon 10110. I also bedded the barrel to receiver using 609. I haven't had time to shoot it yet so I don't know if I made things better or worse..

Anyway my question to those that have or have not even. While I got it down, should I bed the first 4-5" of the barrel moving out from the receiver? or leave it fully free floated?

I've done a TON of reading on bedding the barrel, seems some do, some don't and I didn't see much of a trend as to what way produced the best accuracy typically...

Adding pillars and bedding the action was a no brainer due to the stock compressing. Just not sure if I should bed the barrel....

John

 

[justin amateur]

Free floated is not a rule, just a suggestion.

With a weak stock, barrel bedding will improve results.

I've tried epoxy barrel shims, partial bedding and full length bedding.
Best results came from a barrel block rig.
Barrel is full length bedded and mechanically locked in place.

 

[Shultz]

Free floated is not a rule, just a suggestion.

With a weak stock, barrel bedding will improve results.

I've tried epoxy barrel shims, partial bedding and full length bedding.
Best results came from a barrel block rig.
Barrel is full length bedded and mechanically locked in place.

Thanks for the reply. I've read many of your posts on this subject.

I guess for now I'll just shoot it and see where I'm at. I understand the barrel block rig was best, did you see any real difference between free floated and the other various levels of supporting the barrel?

 

[justin amateur]

Yep, with any stock that shows flex, barrel bedding improved results.
By adding epoxy to the barrel channel you create a composite structure.
Extremely rigid and allowing only minimal barrel harmonics.
For bipod use or off hand shooting does well.

 

[Shultz]

Yep, with any stock that shows flex, barrel bedding improved results.
By adding epoxy to the barrel channel you create a composite structure.
Extremely rigid and allowing only minimal barrel harmonics.
For bipod use or off hand shooting does well.

thanks again. I'm going for it. For some dumb ass reason, boyds cut a huge slot in the middle of the forend... Just mostly filled it with high strength epoxy to save on my 10110...

once that's cured, I'll bed the full barrel length with 10110

 

[lee_enfield223]

I barrel bedded an Anchutz 1416 in 22lr and it was a very average shooter as soon as I bedded the first 5 inches of barrel the groups almost halved with the right ammo, but it was prone to point of impact changes from week to week as the wood moved due to temperature etc, and I removed the bedding before selling it.

 

[Shultz]

I barrel bedded an Anchutz 1416 in 22lr and it was a very average shooter as soon as I bedded the first 5 inches of barrel the groups almost halved with the right ammo, but it was prone to point of impact changes from week to week as the wood moved due to temperature etc, and I removed the bedding before selling it.

Yeah, I sort of expected this might be the case. Hopefully, being a laminated wood and fully sealed I won't see much shift. Living in Las Vegas where it's either HOT and DRY or cool and dry should help as well.

 

[lee_enfield223]

Yeah, I sort of expected this might be the case. Hopefully, being a laminated wood and fully sealed I won't see much shift. Living in Las Vegas where it's either HOT and DRY or cool and dry should help as well.

I forgot to add that i bedded the 5 inches in front of the receiver and not at the stock forend tip, anyway please keep us all updated

 

[Shultz]

I forgot to add that i bedded the 5 inches in front of the receiver and not at the stock forend tip, anyway please keep us all updated

I did the entire barrel, turned out great. I had a busy morning, so i got up at 2am and went to sight it in, only had an hour to work with. I shot some CCI SV AT 25yds To start, 1/4 groups. Moved to 50 and got right at maybe a bit less than 1/2", I didn't measure . Considering I was shooting by flashlight I'm pleased! so far the work looks promising but I have not shot any good quality ammo or past 50yds.....

hopefully I can get back out in the AM and maybe have an hour or so to shoot with sunlight before it's gets too hot.