This guy is really milking this tikka thing.

[mxgsfmdpx]

I am definitely not trying to throw shade here, but I would argue that it isn't a "two-shot" rifle, you are a two-shot shooter with that setup. Just like most people. Of course, people don't want to believe that they are the weak link when it comes to shooting groups with light guns using large cartridges. They want to blame the barrel heating up, or other such nonsense, but in all actuality, it is the shooter adjusting their cheek weld, or hold, or follow-through due to recoil that is causing those groups to open up. And no, a lead sled will not take away that issue unless the rifle is set up flawlessly and tightly, and the sled and rifle are set up exactly the same way each shot.
There is a reason why the 7PRC in the Tikka is getting a rep as not being that accurate. One is that the factory loads are not that great, but the main reason is that it is a light rifle shooting a relatively large cartridge. I would bet that if someone tested a 300WM, a 7RM, and a 7PRC straight out of the box all at the same time, there would be similar results across all three, or at least not enough difference between them all to be statistically significant.

Bingo!

 

[mxgsfmdpx]

So do you not think that a hot barrel will cause groupings to open up?

On tikka and Sako barrels? Not at all.

 

[mxgsfmdpx]

Back when this gun had just finished break in.

2 sight in shots on the right. Then 48 shot group back to back to finish off the box of ammo. Only time between shots was to reload mags.

Factory Tikka action and barrel.

If you think cherry picked 3 and 5 shot “clover leaf” groups are a true testament to the shooter and gun you don’t shoot enough.

 

[grfox92]

Can you clarify what you mean when you say "truly hammer forged"? I know ruger american barrels are CHF but I'm curious what distinction you are making.

Im not sure what Rugers process is for CHF, but I can tell you that the one and only Ruger I owned needed to get sent back and re barreled by Ruger, brand new out of the box, it shot 3" groups. I got it back and it was a good shooter. The groups opened up with heat and I sold the gun.

I dont know what other manufacturers who might claim CHF barrels are doing, but the inconsistency in their performance is insinuates that they aren't doing it to the standards that Sako is.

Sako/ Tikka are known to be some of the best barrel makers in the gun industry. Their factory barrels are better and more consistent than some aftermarket barrels.

Sent from my SM-G990U using Tapatalk

 

[Cdnance]

I am definitely not trying to throw shade here, but I would argue that it isn't a "two-shot" rifle, you are a two-shot shooter with that setup. Just like most people. Of course, people don't want to believe that they are the weak link when it comes to shooting groups with light guns using large cartridges. They want to blame the barrel heating up, or other such nonsense, but in all actuality, it is the shooter adjusting their cheek weld, or hold, or follow-through due to recoil that is causing those groups to open up. And no, a lead sled will not take away that issue unless the rifle is set up flawlessly and tightly, and the sled and rifle are set up exactly the same way each shot.
There is a reason why the 7PRC in the Tikka is getting a rep as not being that accurate. One is that the factory loads are not that great, but the main reason is that it is a light rifle shooting a relatively large cartridge. I would bet that if someone tested a 300WM, a 7RM, and a 7PRC straight out of the box all at the same time, there would be similar results across all three, or at least not enough difference between them all to be statistically significant.

Gonna have to give it an up to date test on the next trip to the range.

 

[nm.otter]

Definitely worth giving it a try.

• Have you removed, degreased and re-torqued the action screws and checked for barrel free-float?
• What scope, what mounts, and what was the mounting process?

.300 Win Mag in a <6.5# rifle is going to be challenging to shoot well even if all of the above is good.

 

[Cdnance]

Definitely worth giving it a try.

• Have you removed, degreased and re-torqued the action screws and checked for barrel free-float?
• What scope, what mounts, and what was the mounting process?

.300 Win Mag in a <6.5# rifle is going to be challenging to shoot well even if all of the above is good.

I’m gonna take it out soon to give it another go. When I say it’s a two shot rifle, I don’t mean that two are close and the other is off paper. The first two shots are 1/2-3/4” spread and the third is usually 1.5-2”.

I haven’t taken the action apart at all. The barrel is clear. I can get a couple pieces of paper through easily.

Scope is a VX5HD on UM rings. Very basic install. Everything torqued as instructed but no crazy process. It may be a week or two, but I’ll see if I can post up some pics.

 

[mxgsfmdpx]

I’m gonna take it out soon to give it another go. When I say it’s a two shot rifle, I don’t mean that two are close and the other is off paper. The first two shots are 1/2-3/4” spread and the third is usually 1.5-2”.

I haven’t taken the action apart at all. The barrel is clear. I can get a couple pieces of paper through easily.

Scope is a VX5HD on UM rings. Very basic install. Everything torqued as instructed but no crazy process. It may be a week or two, but I’ll see if I can post up some pics.

Can you please move this to your own thread and folks will help diagnose.

This thread needs to go into the abyss.

 

[Cdnance]

Can you please move this to your own thread and folks will help diagnose.

This thread needs to go into the abyss.

Yeah… that’s not gonna happen. I have no clue how to move anything on here.

I don’t even know what the letter under people’s names stand for.
Happy to do it if you tell me how.

 

[grfox92]

Yeah… that’s not gonna happen. I have no clue how to move anything on here.

I don’t even know what the letter under people’s names stand for.
Happy to do it if you tell me how.

Go to the firearms section and create a thread regarding your rifle thats been getting discussed.

Sent from my SM-G990U using Tapatalk

 

[wind gypsy]

Can you clarify what you mean when you say "truly hammer forged"? I know ruger american barrels are CHF but I'm curious what distinction you are making.

I'm curious a well.

The other thing is i've seen borescope pics of RAR bores where the rifling has a roughness that I have a hard time seeing happening if hammer forging process matched sako/tikka where they form the rifling by hammer forging over a "rifled" mandrel.

 

[grfox92]

I'm curious a well.

The other thing is i've seen borescope pics of RAR bores where the rifling has a roughness that I have a hard time seeing happening if hammer forging process matched sako/tikka where they form the rifling by hammer forging over a "rifled" mandrel.

Im not sure how to clarify. Ive heard it from people way more qualified than me. But one thing thats for sure is Tikka barrels dont open up group size with heat, and other rifles, like ruger who claim CHF barrels do. I think it has to do with them not properly stress relieveing but I dont know the exact process.

Sent from my SM-G990U using Tapatalk

 

[Cdnance]

Im not sure how to clarify. Ive heard it from people way more qualified than me. But one thing thats for sure is Tikka barrels dont open up group size with heat, and other rifles, like ruger who claim CHF barrels do. I think it has to do with them not properly stress relieveing but I dont know the exact process.

Sent from my SM-G990U using Tapatalk

This is specifically why I assumed my 300wm was opening due to heat and not myself.
I have two other rifles that are CHF thin barrel rifles and both of those begin to open up after the second shot.
You could be on to something with that.

 

[grfox92]

This is specifically why I assumed my 300wm was opening due to heat and not myself.
I have two other rifles that are CHF thin barrel rifles and both of those begin to open up after the second shot.
You could be on to something with that.

Its been demonstrated on here. Groups from the same rifle, one at a time or 3 at a time for 10 rounds and groups from the same rifle for 10 rounds as fast as they could be shot and the group size is exactly the same.

Sent from my SM-G990U using Tapatalk

 

[nm.otter]

It's usually "The nut behind the bolt" as we used to hear.

 

[Cdnance]

It's usually "The nut behind the bolt" as we used to hear.

Very good possibility!!!

 

[5811]

Its been demonstrated on here. Groups from the same rifle, one at a time or 3 at a time for 10 rounds and groups from the same rifle for 10 rounds as fast as they could be shot and the group size is exactly the same.

Sent from my SM-G990U using Tapatalk

The demonstration I believe you are referring to established that the zero didn't change. Most/some of the group sizes opened up, which was attributed to mirage.

 

[grfox92]

The demonstration I believe you are referring to established that the zero didn't change. Most/some of the group sizes opened up, which was attributed to mirage.

That's not how I remembered it. Was it a specific thread you are referring to? What im referencing it wasn't the specific topic of that thread, but pictures were posted.

Sent from my SM-G990U using Tapatalk

 

[5811]

That's not how I remembered it. Was it a specific thread you are referring to? What im referencing it wasn't the specific topic of that thread, but pictures were posted.

Sent from my SM-G990U using Tapatalk

Thread 'Cold bore zero versus (very) Hot bore zero “test”'

Sep 9, 2023

Discussions around “cold bore shifts” and “cold bore zeroes” versus “warm or hot barrel zeroes” are constant. So is the belief that barrels “walk” when they heat up or that groups open when they heat up.

After having multiple discussions, @Ryan Avery and Jake @Unknown Munitions and I set up a day to shoot and measure what happens. Quite a bit of discussion happened with getting everyone on the same page, and explaining the limitations and resolution that would be able to be measured. Basically- the more data, the mare accurate the results will be. However, there is a...

• Formidilosus
• Replies: 623
• Forum: Firearms

• 

Looking at it again, the groups didn't open up as much as I remember. Probably just sample size variation.

 

[bigunit]

I love one of his latest videos where he is handloading for his new do-all sweet heart bergara in 300 prc. He still cant break 1moa and has trouble feeding the whole time but he is still quite enamored with it. The tikka 7 prc shot and fed better with factory.