308 re-chamber to 300wm

[SSW7]

Hello,

Is there any issues in having a 308win 1 in 10 twist 10FP barrel re-chambered to 300winmag.

Thanks for the great site.

[Blue Avenger]

cost

[darkker]

Action length, requiring single feeding

[SSW7]

The 308 barrel is currently a spare, I've dropped a 260rem on the 10FP and won't be going back.

I also have an un-used 110 that was a 233 and was going to re-barrel it to 300wm for a long range rig. I was looking at buying a new target barrel for it and I have the rest of the bits needed to convert it.

So it should be cheaper to re-chamber, but are there any issues that I'm not seeing? As a 308 I had no problems with accuracy.

[nsaqam]

Nope, a .300WM reamer will completely clean up a .308 chamber.

[Blue Avenger]

So it should be cheaper to re-chamber, but are there any issues that I'm not seeing? As a 308 I had no problems with accuracy.

RECOIL!

[Uncle Jack]

I gotta go along with Greg on this. I know of no one who shoots a 300 Win Mag for fun.

First caveat...what vintage is your 110? If it is older make sure that the magazine opening in the bottom of the bolt is long enough to accept a 300 Win Mag unless you want a single shot.

You'll need in, addition to the rechambering, a new bolt head, a new magazine box, spring and follower and a good recoil pad.

uj

[dcloco]

I gotta go along with Greg on this. I know of no one who shoots a 300 Win Mag for fun.

uj

I do. Depends on the powder that you use. Retumbo or H1000 cuts down on the harsh snap....and use heavy bullets of 180, 190, or 208. Recoil is more of a push than a snap, crack, and roll. :)

[geargrinder]

I gotta go along with Greg on this. I know of no one who shoots a 300 Win Mag for fun.

uj

I do. Depends on the powder that you use. Retumbo or H1000 cuts down on the harsh snap....and use heavy bullets of 180, 190, or 208. Recoil is more of a push than a snap, crack, and roll. :)

I do too. Heck, I even shoot my sporter weight 338RUM for fun. dcloco is correct, slow burning powders take harsh snap out of the recoil

I find the recoil from a 308 or 30-06 worse than my 338RUM and Edge.

[Uncle Jack]

Okay, I'll take your word for it. Never tried Retumbo. I always thought a suppressor was a better solution.

uj

[nsaqam]

Another reason the .300WM is practical is because the .300WM can be loaded down to .308W levels but the .308W cannot be loaded up to .300WM levels.

[SSW7]

Thanks for all the replies,

All good advice, I didn't really consider the recoil but I have shot a 50cal without too much pain...

The 110 is a 110FP in 223 that I bought back in 1997, I just measured the mag cutout length which is 3.1" which seems to be short. I may have to reconsider things a little. I was going to drop it into a PDC/Mcree stock and use AICS mags.

[Baryngyl]

I know of no one who shoots a 300 Win Mag for fun.

uj

I do.
But then its in a old 1914 or 1917 Enfield rifle that weighs around 10½ - 11 pounds.

Michael Grace

[Uncle Jack]

I do have to admit to some confusion.

I always though that recoil was a direct reaction to the launching of a projectile of a certain weight and at a certain velocity. I just never knew that these factors could be mitigated by the use of different powders.

uj

[hotbrass]

I am going to rock the boat a little.

If you are pushing two bullets out the same gun at the same muzzle velocity, with everything being equal except the powder burn rate, you wont know the difference. The difference is milliseconds, which you cannot resolve.

[geargrinder]

It may just be my imagination, but my perception is, faster burning powder has a much sharper recoil and slower powder feels like more of a shove.

I'm not saying that the recoil is less or even the same. For sure, the bigger guns kick more. I'm just saying it feels different enough to make it tolerable.

[Uncle Jack]

".....It may just be my imagination, but my perception is, faster burning powder has a much sharper recoil and slower powder feels like more of a shove."

Sounds good in theory, but, considering that the event takes place in milliseconds, or nanoseconds, can the human body really tell the difference? To me, X pounds of recoil feels like X pounds of recoil.

uj