The 6.8 spc is a .277 caliber bullet. Why cant I use a 135gr SMK that says 270 winchester on it? The "heaviest" bullet for the 6.8 spc offered is the 115gr SMK. So my question is, can I use any .277 cailber bullet?
Questions for people loading the 6.8 spc
- Thread starter Ouch!!
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Re: Questions for people loading the 6.8 spc
The 6.8 SPC is best suited for the small "6.8" bullets...the .270 Winchester bullets range from 130-160gr are too long to seat to mag length in the AR platform, if you had a bolt gun you could probably get away with it but then I'd have to ask why on earth did u get a bolt chambered in 6.8 when the .270win gets a 150gr at 3000fps no sweat..
The other thing is that the 6.8 bullets are much shorter than the .270win class stuff, the 1/10" twist was meant for those longer 130-150gr bullets; its faster than whats recommended for the 6.8, ideally a 1/12" twist..
In a nutshell those long ass .30-06 class bullets just aren't suited for the short SPC case. You give up powder capacity to accomodate that length..
The 6.8 SPC is best suited for the small "6.8" bullets...the .270 Winchester bullets range from 130-160gr are too long to seat to mag length in the AR platform, if you had a bolt gun you could probably get away with it but then I'd have to ask why on earth did u get a bolt chambered in 6.8 when the .270win gets a 150gr at 3000fps no sweat..
The other thing is that the 6.8 bullets are much shorter than the .270win class stuff, the 1/10" twist was meant for those longer 130-150gr bullets; its faster than whats recommended for the 6.8, ideally a 1/12" twist..
In a nutshell those long ass .30-06 class bullets just aren't suited for the short SPC case. You give up powder capacity to accomodate that length..
Re: Questions for people loading the 6.8 spc
What PB said. You could load the 135 SMK, but the ogive of the bullet would be well below the case neck, since you have to seat the bullet to a certain COAL.
What PB said. You could load the 135 SMK, but the ogive of the bullet would be well below the case neck, since you have to seat the bullet to a certain COAL.
Re: Questions for people loading the 6.8 spc
And that 135gr probably wouldnt gain any more performance than just sticking with the 115gr's. Thanks for the responses guys.
And that 135gr probably wouldnt gain any more performance than just sticking with the 115gr's. Thanks for the responses guys.
