Downloading for some .223 advantages...

[PistolPete]

This came up in another thread, but wouldn't downloading a bigger cartridge confer many of the advantages of a 223, for a one-gun solution? Obviously, cheap loaded ammo and components cannot translate. But, if loading something like a 107 TMK or 100 ELDVT to ~2500 fps in a 6.5 CM - or something like the 87 in a 6 CM - with 25-30 grains of a faster powder, wouldn't a person see many of the 223 advantages (low recoil/spotting shots, less powder usage, even barrel life) along with retaining fully sufficient wounding (at least with the TMK)? Then still have the horsepower to load like normal when necessary...

It's not a perfect solution, but especially since the Tikka 223 doesn't offer any physical size advantages (neither does the Kimber), and some (misguided) states still preclude 22's for deer, and some guys can't spring for 2 rifles (especially 2 decent scopes), it seems like a discussion worth having at least.

 

[wyosam]

This came up in another thread, but wouldn't downloading a bigger cartridge confer many of the advantages of a 223, for a one-gun solution? Obviously, cheap loaded ammo and components cannot translate. But, if loading something like a 107 TMK or 100 ELDVT to ~2500 fps in a 6.5 CM - or something like the 87 in a 6 CM - with 25-30 grains of a faster powder, wouldn't a person see many of the 223 advantages (low recoil/spotting shots, less powder usage, even barrel life) along with retaining fully sufficient wounding (at least with the TMK)? Then still have the horsepower to load like normal when necessary...

It's not a perfect solution, but especially since the Tikka 223 doesn't offer any physical size advantages (neither does the Kimber), and some (misguided) states still preclude 22's for deer, and some guys can't spring for 2 rifles (especially 2 decent scopes), it seems like a discussion worth having at least.

I have a very low recoil load for my 257 Rob AI. The full load for it makes a 500 yard gun (I use monos), the light load make it capable to about 300. It doesn’t have a ton of recoil anyway, but it’s really mellow with reduced loads.


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[Runwilderness]

The mantra has been for heavy for caliber bullets to ensure adequate wound width and depth, not equal bullet weight and velocity regardless of caliber.

 

[PistolPete]

Good point - I forgot to add that the bullets I listed have similar/better BC/SD's than the 77 TMK.

The mantra has been for heavy for caliber bullets to ensure adequate wound width and depth, not equal bullet weight and velocity regardless of caliber.

 

[Runwilderness]

Good point - I forgot to add that the bullets I listed have similar/better BC/SD's than the 77 TMK.

I don’t have on game experience myself, so this is really a @Formidilosus or other data driven hunter here question.

I haven’t seen a formula offered up anywhere, but what I understood from recent podcasts (eg Form on Exo) was that bullet length (assuming equal construction) matters, which typically equates to heavy for caliber. SD is related but not the determine factor for bullet selection…although honestly I’d need to sit gown with a pad of paper to work out the differences in length vs front area for fixed SD across multiple calibers, so I may be missing something.

 

[TaperPin]

This came up in another thread, but wouldn't downloading a bigger cartridge confer many of the advantages of a 223, for a one-gun solution? Obviously, cheap loaded ammo and components cannot translate. But, if loading something like a 107 TMK or 100 ELDVT to ~2500 fps in a 6.5 CM - or something like the 87 in a 6 CM - with 25-30 grains of a faster powder, wouldn't a person see many of the 223 advantages (low recoil/spotting shots, less powder usage, even barrel life) along with retaining fully sufficient wounding (at least with the TMK)? Then still have the horsepower to load like normal when necessary...

It's not a perfect solution, but especially since the Tikka 223 doesn't offer any physical size advantages (neither does the Kimber), and some (misguided) states still preclude 22's for deer, and some guys can't spring for 2 rifles (especially 2 decent scopes), it seems like a discussion worth having at least.

At one extreme, I got really into this idea and found some really accurate reduced loads for a few rifles. All summer I shot a 7 mag with light bullets, pistol powder, and snail slow velocities - recoil was about like a 243. Man that was awesome to use my main rifle as a trainer/plinker. The problem is barrel life is no better than full power loads - 1,000 rounds and it was shocking to find the expensive custom barrel was toast. Without good barrel life, it’s quite easy to justify a smaller rifle to save money rather than reduced loads. With high volumes and our current high prices for reloading components, smaller trainer cartridges make even more sense.

Other than that, reduced loads are great ish. Velocity spreads will be higher, sometimes much higher. At close range, even to 300 yards, it’s barely noticed, but velocities all over the place are not going to do any favors at distance.