Underwood 220gr Hardcast (New Load)

[mt10mm]

I am going to send my barrel into lone wolf as well and see what they have to say.

[Intercooler]

   You may want to talk with Mr.Redbull about the Lone Wolf barrels. I think at one point he had a slew of them and sold all! I'm pretty sure he went to KKM barrels.

[mt10mm]

I looked things over ( stock barrel vs LWB) and lone wolf while it looks to have little more support there is still room for improvement. I think KKM full support barrel should rid me of brass smiles.

[Geeman]

I think KKM full support barrel should rid me of brass smiles.

I think the load has too much pressure and no matter what you do, some problems will remain.

Greg

[4949shooter]

I think KKM full support barrel should rid me of brass smiles.

I think the load has too much pressure and no matter what you do, some problems will remain.

Greg

That's what I think.

MT, you said you had smiles with Buffalo Bore and your stock barrel, but not with your Lonewolf barrel. This tells me the barrel should be okay. Me thinks the ammo is a tad too hot. Even Intercooler acknowledges this, and he is a big Underwood fan. If you do send it back to Lonewolf though I would be curious to know what they have to say.

As far as RSA weights go, some say the heavy weight springs keep the gun locked up longer. I don't now if there is any truth to this or not. I just know that my G20 runs best with the 22 pound RSA when full power ammo is used. The heavier spring keeps the slide from slamming against the polymer frame as hard. I was getting FTE malfunctions with the stock spring. The 22 pound RSA solved the problem.

[mt10mm]

I think KKM full support barrel should rid me of brass smiles.

I think the load has too much pressure and no matter what you do, some problems will remain.

Greg

That's what I think.

MT, you said you had smiles with Buffalo Bore and your stock barrel, but not with your Lonewolf barrel. This tells me the barrel should be okay. Me thinks the ammo is a tad too hot. Even Intercooler acknowledges this, and he is a big Underwood fan. If you do send it back to Lonewolf though I would be curious to know what they have to say.

As far as RSA weights go, some say the heavy weight springs keep the gun locked up longer. I don't now if there is any truth to this or not. I just know that my G20 runs best with the 22 pound RSA when full power ammo is used. The heavier spring keeps the slide from slamming against the polymer frame as hard. I was getting FTE malfunctions with the stock spring. The 22 pound RSA solved the problem.

You are right about the ammo, I was just hoping it wasn't the ammo. As I reflect on the last 3 outings with UW 220gr I feel it's loaded too hot and load is not consistent.

[Intercooler]

I wonder what the max performance #9 could give with this bullet? It seems to work pretty well with the heavy weights and supposedly can't be loaded too hot due to case capacity.

[Geeman]

I chose a 220g grain bullet and a 5% compressed load got just past 1000 fps.

Greg

[mt10mm]

I chose a 220g grain bullet and a 5% compressed load got just past 1000 fps.

Greg

I should start reloading, that sounds like a perfect load for me.

[Yondering]

You are right about the ammo, I was just hoping it wasn't the ammo. As I reflect on the last 3 outings with UW 220gr I feel it's loaded too hot and load is not consistent.

I think you'd be foolish to shoot any more of that load, sooner or later one will let go. I like hot loads, but I'd have stopped after the first one, with a huge bulge like that.

Look guys, Underwood made a poor choice in bullets on this one, and is trying to load it to the same velocity that some of us hot handloaders have achieved with more appropriate bullets. It's been obvious to some of us from the start that this would be too hot.

I've used AA9 to push a 220gr cast to 1300+ fps from my longslide (1175-1200 from a stock length), and it's a relatively safe powder choice, but won't work well with Underwood's bullet because it takes up too much powder capacity.

[4949shooter]

You are right about the ammo, I was just hoping it wasn't the ammo. As I reflect on the last 3 outings with UW 220gr I feel it's loaded too hot and load is not consistent.

I think you'd be foolish to shoot any more of that load, sooner or later one will let go. I like hot loads, but I'd have stopped after the first one, with a huge bulge like that.

Look guys, Underwood made a poor choice in bullets on this one, and is trying to load it to the same velocity that some of us hot handloaders have achieved with more appropriate bullets. It's been obvious to some of us from the start that this would be too hot.

I've used AA9 to push a 220gr cast to 1300+ fps from my longslide (1175-1200 from a stock length), and it's a relatively safe powder choice, but won't work well with Underwood's bullet because it takes up too much powder capacity.

And there you have it.

We should petition Kevin to back his 220 loading down to 1150. Still a full power 10mm, but at a safe pressure level.

[mt10mm]

I talked with Kevin, nice guy. He and I talked for 30min or so. With the chamber of the lone wolf barrel I have being little tight I advised I thought this ammo I have was loaded little hot. I told him I was sending in the barrel to LW open chamber. If then ammo shows OP signs Kevin would replace the ammo for me,
I am ok with this.

[Intercooler]

   I will swap you out if you choose not to shoot it. Just let me know what you would want in exchange.

[Yondering]

We should petition Kevin to back his 220 loading down to 1150. Still a full power 10mm, but at a safe pressure level.

Probably not with the bullet he's using, IMO. It takes up too much powder space. You couldn't get enough AA9 in there for 1150 fps. You can certainly do it with other powders (obviously) but the pressure will still be up there.

[Intercooler]

Buffalo Bore uses the same 220gr.  It's been a while and I don't have powder specs. Does it show pressure?