Undersized boolits test?

[mistermog]

Hey just a thought, has anyone done a test with well undersized and PCd boolits to check how well it protects against leading in extreme cases?

[DougGuy]

That would likely be a waste of time since information you learned would be less valuable than what you learned from having a *proper* fitment, since the bottom line is this: Fitment is KING.

Undersized boolits are the chief cause of leading since they provide a poor seal in the bore against gases escaping along the sides of the boolit. If you had an undersized boolit that was PC'd to form a tight seal in the bore, this would be a different animal altogether, and is what I would call proper fitment, but the question you are asking sounds like you are asking about boolits so undersized that even the PC doesn't form a tight seal in the bore.

[rancher1913]

you go right ahead and try then report how it worked, I really don't care to spend the time deleading my gun from a bad fit.

[mistermog]

Ok then you guys didnt need to respond. I'm trying to find out how tough the pc is, if that would stop leading if the size was horrible. Exactly.

I intend to if no one has done it before. I'm sure I'm not the only one that's thought of it.

[blikseme300]

Might not lead but accuracy will be poor, guaranteed.

[popper]

Leading isn't too bad but no accuracy. Oh, alloy was > 35 BHN.

[mistermog]

Ah... yeah I don't care about accuracy I just want to make sure leading is minimal. Just want to see how it holds up 'worst case' kinda thing. Thanks guys. (And it would be soft alloy, 18-19 BHN COWW)

[blikseme300]

I'll expand on my earlier post: I inadvertently used the wrong sizing die for some PC'd 311041PB CB's and sized them to .308" and loaded them for my Marlin 336's in 30-30. No leading but key-holing and scatter-gun groups at 100 yards. I did the same SNAFU earlier with PC'd CB's for my 40S&W loads. Same thing, no leading but key-holing at 10 yards with groups the size of a barn door. Pay attention and measure before sizing a large batch.

[mistermog]

Hahahah yes, that's for sure. So do you know how fast they were being pushed? gas check? what brand powder? that's exactly the info I was looking for.

[bigolsmokebomb]

ive shot some bullets that were a few thou too small and I got a minute amount of leading and the group opened up about an inch at 10 yds. the accuracy is horrible considering that with my j bullet reloads I can put 10 rounds in one jagged hole at 10 yds offhand.

[reddog81]

Assuming the powder coat is applied correctly the leading should be non-existent. I'm not sure what the he text would prove.

If if you do the test and get leading my first assumption would be that the powder coat was not properly done.

[mistermog]

Thats the whole idea was to see if the coat was good if it would be strong enough to protect from leading in a worst case.

[popper]

Friction wears the PC off, I assume there will be some gas cutting as well - it's not a Cu jacket. HiTek is the same. Size properly or clean the barrel, your choice.

[Freightman]

ive shot some bullets that were a few thou too small and I got a minute amount of leading and the group opened up about an inch at 10 yds. the accuracy is horrible considering that with my j bullet reloads I can put 10 rounds in one jagged hole at 10 yds offhand.

I to can put lead boolit in one hole it is the second shot that messes me up every time.

[reddog81]

If friction wears the PC off then you'd be better off with undersized bullets...