MichalS Posted February 18, 2019 Report Share Posted February 18, 2019 I succesfully (still have my eyes and hands :)) finished first ever round of load testing. I tried two options, 55gr Hornady for 100m trainig and 80gr SMK which is supposed to be my main bullet - both with RS52. With Hornady I managed to get 0.5MOA which I'm pretty pleased with, but had no luck with Sierra. At the moment I'm blaming T3x stock (it was much harder to control the recoil of heavier bullet) but maybe I seated them wrong? They are 2.46" COAL to the lands in my rifle and I went for 2.42" for a 0.020" jump... TIA, Michal Link to comment Share on other sites More sharing options...
Re-Pete Posted February 18, 2019 Report Share Posted February 18, 2019 I jump mine .020" with 80 grain SMK's, and can get 1 MOA at 600yds on a good calm day. Pete Link to comment Share on other sites More sharing options...
Andrew Posted February 18, 2019 Report Share Posted February 18, 2019 3 hours ago, MichalS said: I succesfully (still have my eyes and hands :)) finished first ever round of load testing. I tried two options, 55gr Hornady for 100m trainig and 80gr SMK which is supposed to be my main bullet - both with RS52. With Hornady I managed to get 0.5MOA which I'm pretty pleased with, but had no luck with Sierra. At the moment I'm blaming T3x stock (it was much harder to control the recoil of heavier bullet) but maybe I seated them wrong? They are 2.46" COAL to the lands in my rifle and I went for 2.42" for a 0.020" jump... TIA, Michal What rifle? My fastest twist Tikka is a 1-8" which might be marginal for that bullet.~Andrew Link to comment Share on other sites More sharing options...
MichalS Posted February 18, 2019 Author Report Share Posted February 18, 2019 Andrew, I calculated it and 1:8 should easily stabilise it. Others (including people on this forum) also used such barrels with good effect. It's something else. Link to comment Share on other sites More sharing options...
bradders Posted February 18, 2019 Report Share Posted February 18, 2019 2 minutes ago, MichalS said: Andrew, I calculated it and 1:8 should easily stabilise it. Others (including people on this forum) also used such barrels with good effect. It's something else. 1:8 will easily stabilise 80 SMKs...unless your barrel is marginal, but if would suggest that if you aren’t getting the accuracy you want then that’s down to something other than seating depth Another thing to consider, 80SMKs were designed for shooting at 600yds in US highpower competition, they were never intended for shooting at 100 Test at the distance you intend to shoot them at, if your going to shoot everything at 100 then just shoot 52SMKs Link to comment Share on other sites More sharing options...
MichalS Posted February 18, 2019 Author Report Share Posted February 18, 2019 I plan to do load development at 100m, and later shoot it @300/600/800m. Still, its not going to be 1 MOA at 100 and 0.5MOA at 300... I hope it's the rubbish stock, we will see. To be honest I'm surprised by the level of recoil in the light rifle (my Tikka only weights around 9lbs.). Similar to 155gr in my 18 lbs rig, which is logical if You think about it... Michal Link to comment Share on other sites More sharing options...
MrCetrizine Posted February 18, 2019 Report Share Posted February 18, 2019 My two T3s seem to like the 80gn SMK (and 77gn SMK and 80.5gn Berger) at 5 thou off the lands. Link to comment Share on other sites More sharing options...
VarmLR Posted February 19, 2019 Report Share Posted February 19, 2019 Michal, What load of RS52 are you using? I've had very good results with the 70gr TMKs in 1:8 .223 barrel using RS50 The smk is very jump tolerant so I suspect something else is amiss. Have you access to a chrony as this can help a lot with load dev? Link to comment Share on other sites More sharing options...
MichalS Posted February 20, 2019 Author Report Share Posted February 20, 2019 VarmLR, I tried 24.2 do 24.7 gn. I suspect its a problem with the rifle (stock) not the amunition. I have access to magnetospeed, but have not used it as I believe it will affect the groupping and POI. Michal Link to comment Share on other sites More sharing options...
Re-Pete Posted February 20, 2019 Report Share Posted February 20, 2019 You really need to check the speed........just fire 2 or 3 rounds with the Magnetospeed on to see what they're doing. You can take it off to shoot for groups once you have an MV for each load Pete Link to comment Share on other sites More sharing options...
bradders Posted February 20, 2019 Report Share Posted February 20, 2019 26 minutes ago, Re-Pete said: You really need to check the speed..... No you don’t Speed is irrelevant, accuracy is important Link to comment Share on other sites More sharing options...
Andy RV Posted February 20, 2019 Report Share Posted February 20, 2019 Don’t expect a new stock to make up for poor technique or inaccurate ammunition! You shouldn’t be struggling with recoil with that rifle. Link to comment Share on other sites More sharing options...
MichalS Posted February 20, 2019 Author Report Share Posted February 20, 2019 Andy RV, I'm used to anatomic/ergonomic stocks, having to bend and push to fit the head behind the scope had to have an effect. I was somehow able to make the rifle stable with 55's, but not with 80's... We will see. Link to comment Share on other sites More sharing options...
gunner Posted February 20, 2019 Report Share Posted February 20, 2019 2 hours ago, bradders said: No you don’t Speed is irrelevant, accuracy is important Yup kinda agree iv never owned one and dont need one , i test real bullet drop out to the distance and every 100 yards & adjust accordingly . Sometimes out to 6-700 yards . Link to comment Share on other sites More sharing options...
bradders Posted February 20, 2019 Report Share Posted February 20, 2019 3 minutes ago, gunner said: Yup kinda agree iv never owned one and dont need one , i test real bullet drop out to the distance and every 100 yards & adjust accordingly . Sometimes out to 6-700 yards . There is an unhealthy opinion on this forum to suggest that everything load wise is done with a chrono and a copy of Quickload, basically it’s a word that rhymes with rollocks Link to comment Share on other sites More sharing options...
Re-Pete Posted February 20, 2019 Report Share Posted February 20, 2019 Well you might have missed my drift.......................for a given calibre and bullet weight, the higher the speed, the greater the pressure, up to the point where the speed stops increasing and it all goes bang. Obviously, the whole point of the game is consistency and accuracy. Pete Link to comment Share on other sites More sharing options...
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