Tikka 223 & 77TMK range results

[BLJ]

I’m loading pretty long, 2.475” OAL.

23.5 gr Benchmark.

Tikka Varmint, so longer barrel.

Work up to it.




P

Stock throat and aftermarket mags and you’re at 2.457” OAL? Thanks.

@Schmo. Info on the reamer would be appreciated. PM works if you prefer. Thanks.

 

[Schmo]

Happy to share info with anyone on the reamer. Just PM me and we’ll connect

 

[waspocrew]

Look into renting the Uni-Throater from 4D. Super affordable and you don’t need any special tools besides what you rent. The rental all in costs about $50

I may do this as well - my 223 CTR shoots great, but the throat is quite short, even with a 69 gr TMK. Tried to take care of it the old fashioned way by just shooting it a lot haha.

 

[Schmo]

If you like to DIY, it’s a fun little project. Very affordable and can offer a great advantage

 

[Schmo]

@flyinsquirel,
Avg velocity from 10 round group of 24.5 grs Tac was 2771. Does not group well above that charge.

 

[Schmo]

Range results from this morning.

 

[flyinsquirel]

Range results from this morning.

View attachment 783758

Interesting. Looks like the longer coal might be reducing velocity. Thanks for the reply.

Honestly I’d say that is a good group. I’d take that and go kill stuff out to the limits of that cartridge/bullet combo.

 

[Schmo]

I don’t think the long COAL is reducing velocity. It runs in safe pressure at 25.5, which gave average of 2931 fps. Maybe higher. But I need to run it with CCI 450s to test that.

 

[wind gypsy]

In regards to trying 80 ELDs, I kind of doubt they have a longer bearing surface than 77 TMKs.

Interesting. Looks like the longer coal might be reducing velocity. Thanks for the reply.

Honestly I’d say that is a good group. I’d take that and go kill stuff out to the limits of that cartridge/bullet combo.

I’d expect a longer throat to reduce velocity because it reduces pressure.

 

[Schmo]

I’d expect a longer throat to reduce velocity because it reduces pressure.

Correct, thus allowing more powder to get back up to pressure. More powder = more velocity. Gonna do some more testing after hunting season. This load will kill stuff, so that’s what I’m taking to Montana next week

 

[Pharmseller]

Don’t use too much TAC and shoot in the heat.




P

 

[Schmo]

Yeah, Tac isn’t real spikey tho. I’ve done a lot of load dev in the summer with it in a 708. But you do have to be careful for sure