Underwood .40 ammo

[Carter]

I've been looking around at a lot of various places for ammo and ran across Underwood ammo. Their .40 is all labeled "+p", which I know is a marketing plow, but they have some crazy numbers.

135 grain 1500 fps
155 grain 1300 fps
165 grain 1200 fps
180 grain 1100 fps

Are these rounds safe to shoot in glocks and m&ps? Or are they far over reaching safe pressures and speeds?

 

[plouffedaddy]

Well I haven't tested their 40S&W loads yet but I have tested some of their 10mm, 357SIG, and 9x18 loads and they seem to get very close to, or exceed their claims.

Here's one for example:

 

[hardluk1]

I have a tp40 kahr . 4" barrel and I can tell you there 155gr xtp will at least meet there 1300fps advertising. Some of that could be pistol but it good quality ammo with a 10 shot group that did not vari more than 16fps and averaged the 1300fps. A am wanting to try some 45 loads of there.

 

[Torian]

I've purchased .357, 10mm, and 9mm loads for underwood for some time. They have always performed to standard. Can't say enough good stuff about Kevin and his company.

 

[Carter]

Good to hear about their quality. So how do they safely get to those speeds in .40? I would think that would lead to a kaboom.

 

[Torian]

I know that Kevin loads within specs, at the upper end (they are hot). Beyond that, I don't know what methodology he employs to get those speeds. I have also used doubletap and buffalobore, and I prefer underwoods prices.

 

[Oceanbob]

I know that Kevin loads within specs, at the upper end (they are hot). Beyond that, I don't know what methodology he employs to get those speeds. I have also used doubletap and buffalobore, and I prefer underwoods prices.

This^^^^

I've also been buying from Kevin (met him over at GlockTalk) for a few years now. He is a quality control, honest number business man and his pricing is exceptional. (in my opinion).

Good to see Plouffedaddy; has a great group of videos.!

I would say to buy Underwood Ammo with confidence.

Be well....
Bob

 

[Carter]

Good to know.

I may be a future customer of theirs.

 

[skt239]

I've used their .38 special, .357 mag and 9mm. and while I've tested them, they certainly felt like they exceeded the velocity claims. Underwoods .38 special +p gets near .357 mag velocities so it makes my snub nose a little less useless out on a trail. If you were spooked by double tap and their false velocity claims, have no fear with Underwood, they are the real deal.

 

[KYamateur]

I've never used any of their semi-auto ammo, but their big bore (38 -44) revolver ammo is some high quality stuff. It is accurate, clean, and reliable.

 

[TarDevil]

I've shot their 10mm... buddy of mine orders quite a lot of their ammo and swears by them.

 

[nathan]

Those are great velocities especially the 9 mm mak

http://www.underwoodammo.com/9x18mm9mmMakarov95GrainXTPJacketedHollowPointBoxof50.aspx

 

[Carter]

Well my glock ended up being a 9mm instead of a .40 (asked for either), so looks like I'll being testing their 9mm rounds instead. Very interested in those numbers as well.

 

[ku4hx]

The only one I have direct experience with was five 180 grain rounds I clocked for a friend. Across my PACT2 they ran 1,040 -1,050 fps in my Glock 27. No case bulges and extraction was completely unremarkable. I have no doubt in a longer barrel gun (Glock 22 for example) the published velocities are obtainable.

There's no secret to getting higher velocities; most commercial ammunition is not loaded at maximum pressure levels for various reasons. If you properly max out your load with the appropriate powder, or blend of powders, you can get similar results. The problem for non commercial loaders is lack of equipment to monitor pressures and other parameters.

I can exceed their volicities in my 10mm guns without the need for specialized equipment and without being hard on a smaller platform gun. I just run my 40s lower and if I need a screaming 180 grain load I bump my 10mm up to about 1,300 fps. For the 150/155 grain loads I can easily reach 1,450 fps and do so in a heavy gun designed to handle that level of power.