Quick insight needed

[300WSM]

Hi folks...been so busy in the middle of a move and you all know how that sucks. Regardless I needed some opinions on this

I need a bullet that is nearly identical to the 120 gr 25 cal positive expanding point (PEP) that Winchester loads in some 25 cal offerings. This is for an experiment on going and it needs to be identical in dimension and performance.

Thanks in advance

 

[CMBTshooter]

Not sure how close, but maybe the Hornady 120 gr Interlock HP could serve as a stand in. The BC on the interlock is higher (.394) vs the PEP (.344). The 120 gr Sierra GK is even closer in BC.

Hope this helps,
Joe

 

[Oldtrader3]

The Speer Grand Slam 120 gr .257 bullet is .328 BC. That is pretty close to .344. Since published BC 's are measured at different velocities between different companies.

 

[FOTIS]

Similar in what?

construction, BC, ......

 

[onesonek]

Similar in what?

construction, BC, ......

I 2nd that, throw factory velocities in there as well. While factory loads can be quite accurate, I have seen velocity spreads as high a 100 fps. Hard to duplicate factory loads, unless you know what powder is used. Identicle? May I asked what the experiment goals are? Just real curious.

 

[Oldtrader3]

if you are tring to duplicate lead hardness or jacket tensile strength, thickness or design, I do not know how you would determine all of these variables with out a laboratory?

 

[300WSM]

It is for an experiment and it is for a caliber that isn't offered by Olin. They don't offer that bullet in component form.

The most important factor is dimension then followed by construction.

 

[SJB358]

I would check out the Hornady 120 HP then. I would bet it is fairly similar ballistically, although, that Winchester is fairly soft.

What kinda experiment are you doing?

 

[300WSM]

I would check out the Hornady 120 HP then. I would bet it is fairly similar ballistically, although, that Winchester is fairly soft.

What kinda experiment are you doing?

I'm trying to simulate some real world impacts with using wet carpet and such....at distances and certain angles to get some true performance.

You are right that PEP is rather soft. But that is ok for this as it needs to be able to terminate whitetail, black bear, mule deer. So in other words it cant be too hard, yet sturdy enough to handle game as such.

 

[300WSM]

I would check out the Hornady 120 HP then. I would bet it is fairly similar ballistically, although, that Winchester is fairly soft.

What kinda experiment are you doing?

I'm trying to simulate some real world impacts with using wet carpet and such....at distances and certain angles to get some true performance.

You are right that PEP is rather soft. But that is ok for this as it needs to be able to terminate whitetail, black bear, mule deer. So in other words it cant be too hard, yet sturdy enough to handle game as such.

Speaking of interlock 25 cal 120 gr, is that bullet soft enough for the above animals. Meaning is it unlike a fail safe type bullet which was way to tough for white tail deer. That fail safe even running at super high speed was still ridiculously too tough.

 

[DrMike]

Speaking of interlock 25 cal 120 gr, is that bullet soft enough for the above animals. Meaning is it unlike a fail safe type bullet which was way to tough for white tail deer. That fail safe even running at super high speed was still ridiculously too tough.

Two completely different bullets. The Hornady InterLock is a cup-and-core bullet. The Fail Safe was designed much like a Trophy Bonded Bear Claw. The structure of any C&C bullet will simulate what you are looking for, though dimensions will be unique for each bullet.

 

[onesonek]

"I'm trying to simulate some real world impacts with using wet carpet and such"


:?:


I can't see the consistency needed for that, with that test medium.

 

[Oldtrader3]

I am doubtful, as an engineer, that you will duplicate any factory ammunition adequately without actually shooting the precise bullet and ammo that you want to test from your barrel. Bullet jacket hardnesses, jacket bonding of cup and core, plus factory ammo ballistics and barrel variations which are as much as 250 fps from cataloged velocities. There is no way to simulate another manufacturer's bullet and ammunition adequately by any means, except by shooting that ammunition.

 

[ROVERT]

I don't really understand what you are trying to accomplish here, but if it is really that important to you to use something identical to the 25 cal PEP, why don't you buy a box of 25-06 ammo and pull the bullets?

You can then load them up and compare the test results to other similar bullets to find the one that performs most similarly.

 

[300WSM]

I don't really understand what you are trying to accomplish here, but if it is really that important to you to use something identical to the 25 cal PEP, why don't you buy a box of 25-06 ammo and pull the bullets?

You can then load them up and compare the test results to other similar bullets to find the one that performs most similarly.

That is an option...unless someone can sneak me some of those bullets out of Olin. They do make those in house but just don't sell enough of them to justify making a package/box to sell it as a component.

 

[JD338]

I do not fully understand what you are trying to accomplish but the best way is to use the same bullet.
I would pull some bullets and load them for your test. Different bullets will give different results.

JD338

 

[onesonek]

I don't really understand what you are trying to accomplish here, but if it is really that important to you to use something identical to the 25 cal PEP, why don't you buy a box of 25-06 ammo and pull the bullets?

You can then load them up and compare the test results to other similar bullets to find the one that performs most similarly.

That is an option...unless someone can sneak me some of those bullets out of Olin. They do make those in house but just don't sell enough of them to justify making a package/box to sell it as a component.

The easiest and best solution,,,buy Noslers :wink: