Underwood 220gr Hard Cast Flat Nose

[MrRedbull616]

http://www.underwoodammo.com/10mmAuto220GrainHardCastFlatNoseBoxof50.aspx


SWEEEET!!!! 

[sqlbullet]

220 grain making 1200 fps.  That is a pretty stout load.

Wish they had a picture so we had a better idea of the metplat size.

[Yondering]

Yes, a stout load for sure, but can be done; bullet length is critical in a load like this. I want to see a picture of it.

[Ramjet]

I wonder when I see velocities that may be on the high side is the tester quoting velocities from a pressure barrel that is longer than what we normally use on our guns thus same velocity is not realistic?

[harrygunner]

Underwood is matching Buffalo Bore's performance with the same weight bullet.

I have some older Double Tap WFNGC 10mm rounds with 200gr and 215gr bullets. 'Intercooler' shot some of my 215gr DT and got 1201 ft/s from his EAA Witness Elite Match with a 4.75" barrel.  So, I can see Underwood reaching advertised numbers.

I'm not going to buy the Underwood 220gr WFN. I recalled why I was concerned about heavier bullets - hickok45's video shows how a standard Glock barrel can't stabilize heavier bullets:

http://www.youtube.com/watch?v=-m0satEkGjw&feature=related

The 220gr bullets would work with my 1911, but I carry my Glock 29 in the woods. So, I'll wait for similar ammo with 200gr bullets.

[sqlbullet]

Underwood also has an excellent reputation for exceeding the advertised velocities.  That alone makes them quite unique in ammunition mfg's.

[Yondering]

I wonder when I see velocities that may be on the high side is the tester quoting velocities from a pressure barrel that is longer than what we normally use on our guns thus same velocity is not realistic?

Underwood has a good reputation for matching their published velocities in user's pistols. I haven't bought any of their 10mm, cause I load my own, but bought some of their 9mm 124gr +P+, advertised at 1300 fps; that stuff does 1320 fps out of my Glock 19.

[Ramjet]

Good too know thanks for the feedback

[highxj]

I'll order up a box and test them in my KKM 4.6 bbl and post the results if someone doesn't beat me to it.

[MrRedbull616]

shot some!

UW 220gr hard cast
G29 3.8 SLB - 1133 1161 1173 1151 - avg 1155
G20 4.6LWD - 1206 1232 1217 1189 1184  - avg 1206
G20LS 6.6LWD - 1271 1266 1278 1235  avg 1263
G20 4.6barsto - 1202 1195 - avg 1199

shot some Buffalo Bore as well...

Buffalo bore 220HC -
4.6LWD - 1128 1137 1140  avg-1135
4.6barsto -  1132 1142 1148 - avg 1141

[Yondering]

Well done! That looks like good stuff.

Can you post a picture of the ammo? Probably too much to ask, but I'd sure like to see a picture of one of the bullets, pulled from the case.

[Ramjet]

Wow I like the velocity from the LWD barrel. Stem to stern load for deer.

How about accuracy from the different barrels?

[REDLINE]

Pictures would be great, but I think I more curious as to the powder being used.  Any chance you could disect one and see what the powder looks like, and how much of it?

[Yondering]

Pictures would be great, but I think I more curious as to the powder being used. 

AA9 and Blue Dot will both work for this load. Maybe Longshot too, I haven't used it though. I'm safely pushing a 220gr of my own a little faster than this with AA9, but I'm sure my bullet is shorter than this one, providing more case capacity.

[MrRedbull616]

going to do a comparison in accuracy between   factory, storm lake, bar sto, lone wolf and kkm if I can find one.