Rokslide Special 223 recipe

[B_Reynolds_AK]

I am not sure if other chambers differ, but in my tikka it seemed to shoot just as good at mag length as it did seated out further. I would just load to book OAL and go, unless you are using varget and need the extra room for powder. Believe the TMK profile is designed well for jumping plenty.

Copy that. I suppose with the factory Tikka barrel that is throated fairly short, 2.26 oal is probably fine with the TMK’s.
I was going to try N150, as recommended by @Marbles.

 

[Lawnboi]

I’m just about to start reloading 77 TMK’s for my new Tikka.

I’ve been using SAC comparators for both headspace and to find ogive length for my 6 CM.

I will for sure pick up the headspace comparator for the 223.

Question: Should I worry about CBTO on the 77 TMK’s or just load to OAL and not worry about ogive?

It’s not a terrible idea to have a cbto comparator for 22 cal on hand. There’s more uses to it than just measuring cbto of loaded rounds.

Also depends on your chamber. I’d never assume your freebore is what it is, I like to measure.

Nice tool to have for not much money. Honestly the sac cbto measurements are almost equal to my rifling in that I can guesstimate now where to put the bullet.

 

[Juan_ID]

Copy that. I suppose with the factory Tikka barrel that is throated fairly short, 2.26 oal is probably fine with the TMK’s.
I was going to try N150, as recommended by @Marbles.

I did measure my chamber but it did me no good as I was restricted by the factory mag. For both tmk’s and 73 eld’s I load to ~2.26” coal with xbr and they both shoot very well with no tinkering necessary.

 

[Unckebob]

I don’t think 3 round groups show much of anything. There are numerous threads about it, but getting up to a 10 round group starts to be statistically relevant.

Three round groups are good for testing how a hunting situation might turn out if a follow up shot (or two) is needed. Since I cannot cool my barrel i the field, this test shows how barrel heating will affect my shots. My new Tikka has a light profile barrel so long strings of fire are out.

When I do 10 shot groups, I make sure to keep my barrel temps down by letting the barrel cool. This gives me a better idea of the accuracy of the rifle b/c I don't will never shoot 10 shots at a game animal.

I am going to try some 20 shot groups (see Hornady podcast) at some point with the 223.

 

[B_Reynolds_AK]

My new Tikka has a light profile barrel so long strings of fire are out.

My 25 round group over the course of 60-90 seconds from a factory Tikka would say otherwise.

Edit: It would actually “say” nothing. It doesn’t have to, as it shows it.