Tikka 7 SAUM project

[ChewMT]

I put together a Tikka with a 24" Proof Research prefit in 7 SAUM. I did a few ladder tests and got less than desirable results, I think I need to bed my action. I loaded everything ~.020 off the lands and did a workup. I also allowed my barrel to cool off between strings, my first round cold bore is crazy high for some reason. I also tried Reloader 26 but I got some inconsistencies, I was using pulled bullets and brass that I had partially resized after pulls so that may of been the issue.

2.990 COAL
Norma twice fired brass
205m
175 Berger Elites

106 yards

 

[ChewMT]

H1000 loaded to ~2.990
1. 61.5gr 2794fps
2. 62gr 2805fps
3. 62.5gr 2824fps
4. 63gr 2852fps
5. 63.5gr 2874fps
6. 64gr 2883fps
*Still had more to go, probably 1 more grain before pressure.

 

[ChewMT]

H4831sc loaded to ~2.990
1. 58gr 2753fps
2. 58.5gr 2786fps
3. 59gr 2805fps
4. 59.5gr 2837fps
5. 60gr 2867fps
6. 60.5gr 2891fps
7. 61gr 2904fps
8. 61.5gr 2928fps
9. 62gr 2977fps *max load*

 

[RockyMtnUT]

62.5 h1000 seems just fine
What trigger is in it.
How many rounds, I am assuming new?, it will speed up with more rounds down it.
Whats not to like about 2,3,4?

 

[j-shooter]

Nice looking rifle. May I ask what the original Tikka action was chambered in and if you had to do work to fit the 7 SAUM in.

I am thinking about going the same path and maybe start off with a 7RemMag Tikka.

 

[ChewMT]

H4350 loaded to ~2.990
1. 53gr 2750fps
2. 53.5gr 2761fps
3. 54gr 2798fps
4. 54.5gr 2815fps
5. 55gr 2834fps
6. 55.5gr 2865fps
7. 56gr 2875fps
*still had more to go before I reached the limit, maybe 2 more grains

 

[dnb86]

Try bedding the action and/or different seating depths but not to scare you I had a proof barrel shoot like s*** on my rifle And we literally did everything under the sun to get it to settle and never did ONLY thing we did different after all the experimenting was put a bartlein barrel on it and problem solved

 

[ChewMT]

Nice looking rifle. May I ask what the original Tikka action was chambered in and if you had to do work to fit the 7 SAUM in.

I am thinking about going the same path and maybe start off with a 7RemMag Tikka.

It was a 7remMag, the factory magazine is what I'm using and it feeds flawlessly.

 

[ChewMT]

Try bedding the action and/or different seating depths but not to scare you I had a proof barrel shoot like s*** on my rifle And we literally did everything under the sun to get it to settle and never did ONLY thing we did different after all the experimenting was put a bartlein barrel on it and problem solved

I'm hoping that it tightens up after bedding.

 

[dnb86]

And FWIW my smith thinks proof carbons are luck of the draw and has had barrel come in with enough runout he was worried about sticking the reamer in it

 

[ChewMT]

62.5 h1000 seems just fine
What trigger is in it.
How many rounds, I am assuming new?, it will speed up with more rounds down it.

175 berger elite,
Factory trigger with a yo Dave trigger spring,
Exactly 100 rounds down the barrel as of now, I only have 50 pieces of brass

 

[RockyMtnUT]

175 berger elite,
Factory trigger with a yo Dave trigger spring,
Exactly 100 rounds down the barrel as of now, I only have 50 pieces of brass

If it was me I'd do a good clean then shoot 7-10
Foulers and load 62.5 h1000 and see if it groups right there.

 

[ChewMT]

If it was me I'd do a good clean then shoot 7-10
Foulers and load 62.5 h1000 and see if it groups right there.

I'm inclined to agree with you but I was really hoping for at least 2900 from whatever load I use.

 

[RockyMtnUT]

I'm inclined to agree with you but I was really hoping for at least 2900 from whatever load I use.

Never know it took 150 rounds for my barrel to speed up and settle into a consistent speed.