Reloading .270 WIN (.277) with .280 Cast Boolits ?

[DODGEM250]

Reloading .270 WIN (.277) with .280 Cast Boolits ?
I'm just curious if one would run into problems with reloading .270 Winchester brass with a .280 cast bullet that is already lubed and GC'd ? I simply have to ask because everything I reload for .270 WIN is sized to .277 spot on. I'm not comfortable with the idea of putting a golfball through a garden hose. If I'm wrong tell me.

What say ye ? Reasoning ?

[nanuk]

0.003 over groove doesn't seem to be that much, as long as it will chamber...

have you tried to insert one into a fired case?

which boolit?

[DODGEM250]

0.003 over groove doesn't seem to be that much, as long as it will chamber...

have you tried to insert one into a fired case?

which boolit?

The poly-tip is one of my usual hunting reloads in .277

The other two are examples of some cast that I have that are .280 to be used for paper-punching.

.

[I'll Make Mine]

Generally, .003 over groove size with cast boolits isn't a problem as long as you don't substitute them into an existing load made for a smaller diameter the same weight; there's a small pressure increase as you go above groove size, but it's not huge until the boolit starts to get substantially oversize. Start with correct loading techniques (reduce published loads 10% and work up to best accuracy while watching for pressure signs) and there should be no problem.

[williamwaco]

I have used .311 bullets in every .30 caliber rifle I have ever owned.

The few I have slugged slugged .308 to .3085

.311 has worked so well for me that I never bother to slug them anymore.


.

[Larry Gibson]

Assuming the .280 bullets will chamber then they should be just right.

Larry Gibson

[DODGEM250]

Good enough. Questions and concerns answered. I'll just walk away with my answers. Thanks everyone.

[shotman]

Well IF they chamber. They wont in a mod 70 win that I have and wont in an extra barrel. But if it does in your gun go for it . .278 in mine is snug but not hard to close bolt

[DODGEM250]

Well IF they chamber. They wont in a mod 70 win that I have and wont in an extra barrel. But if it does in your gun go for it . .278 in mine is snug but not hard to close bolt

Well, there in lies my concern. I size "my" casts to .277 I got these casts from a member here. I expected .277 / .278 but they arrived as .280 lubed & GC'd. I'm not familiar with, nor am I comfortable with, like I said "trying to shove a golf through a garden hose". These cast bullets, in the photo are for punching paper, so, I have more interest in just resizing them and going GCless and being done.

I did post my ad looking for a.270 bullet in 130 grain, but, I expected to get a .277 / .278 bullet and not some "what I prefer" recommendation from the seller. I feel as though resizing them to the proper size is safer than accepting a guess from someone else.

No harm, no foul on this end. I've learned to be overly specific and detailed from this point on...

[I'll Make Mine]

Well, there in lies my concern. I size "my" casts to .277 I got these casts from a member here. I expected .277 / .278 but they arrived as .280 lubed & GC'd.

Nothing says you can't size them again, if you're used to using .278 and (apparently) have the necessary equipment. I wouldn't expect .280 to shoot any better than .278 (once your boolit is big enough, bigger usually doesn't help) if .278 is right for your rifle, but I wouldn't expect it to work noticeably worse, either.

[Moonie]

I size my 6.8 projectiles to .279 for my AR, haven't had a problem yet.