Load data for 10mm

I know people always find this hard to believe but even a bronze brush can scratch a stainless barrel. Note however, this was a custom, hand lapped barrel, not your average factory barrel. I also have a good quality Olympic scope that shows finer detail than most scopes in use today. Unfortunately I don't have a camera adaptor for it. So is a Lewis going to ruin your barrel? Nope. Is it the best thing to use? In a pistol barrel, probably, unless the Birchwood Casey lead remover cloth works as well as I've been told it does (plus I don't know how it works! If it's a heavy abrasive, then no!). Personally I stick with JB Bore cleaner but as long as there's no obvious damage to the bore, use whatever works because lead is hard to get out of a barrel. The absolute best? Outers Foul Out... but it can be messy and involved. But oh boy, does it ever get the lead out!

Neither Buffalo Bore nor Underwood uses gas checks on their heavy 10mm lead bullets. Underwood uses polymer coating and BB has a plain base. The poly bullets definitely will not lead while the plain base BB *might.* Then again, how many do you expect to shoot? I'm guessing not enough to lead your barrel very badly!

Hoppe"s has definitely changed their formula and the new one just doesn't have the same smell as the old one (I have the remains of a gallon I bought 30 years ago or more!). New stuff seems to work the same but I use #9 as a powder fouling remover only, then use other chemicals to remove copper or carbon. As far as I am aware, the only way to remove lead is to scrub the $&!]! out of your barrel! I have tried many products that say the remove lead but in the end, you always end up scrubbing the crap out! Hoppe's #9 will eventually get copper fouling out but never completely and most of the popular copper removers (Sweets 7.62, Wipe Out, Barnes CR-10, Montana Extreme Copper Killer and others) work much better. Even Hoppe's Elite, while it works well, is slow.

One warning about Hoppe's (and apparently any solvent with ammonia in it) is, *do not* use it in conjunction with any clorinated solvent, such as triclorithane 111. It can literally eat pits into a steel barrel. Don't ask me how I know, just take my word for it!

Leading in your barrel (mostly) comes from the powder charge melting the edges of the bullet base into a mist, that then settles in your barrel. The next round flattens it out and, if left alone, can literally build up into lumps! The softer the lead and the hotter the load, the faster and worse it gets. If you have a rough barrel, it can also literally scrape lead into the tiny voids in the metal. Leading can be such a devilish thing to deal with! Certainly no fun. I am a huge advocate of the polymer coatings now and avoid using bare, lubed lead bulllets as much as possible these days. I might even sell all my moulds and casting equipment! Shooting jacketed rounds after shooting does not, contrary to popular belief, "blow" the lead out of your barrel but flattens and smooths it out over a wider area, which probably makes it easier to remove. Use your head, don't shoot hot jacketed loads in your lumpy-with-lead barrel! It *will* cause a pressure spike that *could* damage your barrel or even destroy your gun! Shooting jacketed over minor leading will make it seem to disappear but it really doesn't. It just turns it into a gray streak next to your lands! Scrub it, Grasshopper, it's the only way I know. I'm soon to try the Lead Away cloth so my opinions may change!

Holosuns... my favorite Chinese company to rag on these days. Yet I still buy them because I think they are the best value for the money I can get. I have either 3 or 4 507T's and have had zero problems with them. One on a Glock 26, 21, 29 and 40, so 5 actually because I have one on my HD AR, too but it's a C. So far I haven't even lost zero when changing batteries (one still must confirm zero, however!). I like the shake awake thingy which really makes for long battery life (I still change them every year on my carry guns). I also like the circle-dot reticle, especially when transitioning from irons to the RDS. What's not to like? If they can survive Aaron Cowan's (Sage Dynamics on u tube) "testing" (torture is more like it!) they have to be good! It seems the Holosun's are right up there Delta Point and the RMS for about half the price! I really like that part! I also like stuff that works the way it's advertised to work!
Cheers,
crkckr
 
Got a reply from Underwood about their bullets.
They said their bullets are S.A.M.I spec bullets and as hard cast bullets with a polymer coating they will not cause leading.Soft cast bullets on the other hand will cause leading and should be avoided.
They further said S&W M&P 2.0 pistols have been heavily reported as having problems with fail to feed and soft primer strikes on earlier models and to shoot your Underwood ammo to see if your gun is affected with full power loaded ammo.

Edited:Most problems on Utube were related to a weak recoil spring or a weak magazine spring or both.
 
Bought a new 10mm and just received my Lehigh 140 gr bullets.
Anyone reload for them?
Trying to get a baseline to start from.

What is that new shootin iron that you just bought?? Just curious as I like to compare what others are experiencing with their guns. I'm shooting a G20, but thinking about a different platform because the eyes are not as good as I'd like!! Retrieving a downed bear in the dark, in dense woods would be a little more comfortable if I was looking for a red or green dot instead of a trintium front sight!!
 
@Alibiiv















Take a look at the Springfield XDm10 OSP. They are a great red dot platform and are good shooters with a funky supported, match barrel.







I have the now discontinued 4.5 OSP

and love it!



 

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Have a friend with an XD in 10mm and has zero problems.He shoots Underwood 220gr and 140 gr Lehigh Penetrators and never had a problem.
The only reason I went with the S&W 2.0 was the price and the salesman said the earlier models had problems but S&W fixed that and these new ones are good to go and they were much cheaper as S&W wants them out there to show folks they do work.They are working on getting folks to trust the S&W name again.
 
ARlife4me if you had to pick just 1 as your favorite which one would it be?
1 for all and all for 1!
The xdm is good, but I don't like grip safeties.
The 2.0 has only 3 mags worth and I do like my smiths.
My g40 is outstanding compared to the g20 and don't like the poly mags.
The xdm model I have isn't in production any more, but there're the elite's in production I think?
Depends on what barrel length you want? I'd go with 2.0 4.6" no manual safety for the win.
 
Thank you sir.
I have shot the new XDM 4.5 in barrel and like it but like you I am not super crazy about the grip safety.I have owned many Glocks and like them.
Still have not shot the new S&W 2.0 yet.Our snow is starting to melt and now we have ICE!
I play slip and slide every time I go outside.FEENIX has it worse than me as they got colder weather and more snow with more snow coming.Fresh snow on top of ice,I don't see a problem with that!I promise I will fall at least 5 times before it melts.
 
Look up 140 grain Lehigh Penetrators. A wholdifferent bullet. You don't need the weight but have the fps. I ordered some a couple months ago thinking about grizzly skulls .I haven't loaded any yet. Been using 200 gr. HSM and 220 gr. Grizzly hardcast . I can't find Underwood or even Buffalo Bore.

I've noticed "HSM" in a couple of replies in this thread, what does HSM stand for?? Not familiar with particular term
 
If You're shooting cast, why not use a gas check and have that wipe the lead out while you shoot? I shoot hard cast 200gr Beartooth WFNGC bullets over Longshot, and have had zero lead issues in an H&K USP .40 polygonal barrel. I get that as you increase speed, lead will invariably get heated or stripped off. With the GC, the last thing going down the barrel is copper…1000 fps with that 200 gr bullet will make two holes in a bull elk's chest.

I've never shot a gas check bullets in a 10mm, but have had a lot of experience with gas checked bullets with the .38 special and .357 magnum. Gas checks will help with preventing the leading, but will not totally prevent it from happening. If the load is too hot the barrel will still lead up.
 
I looked at website. Finally found under "meet the team". Still not sure on the "M" part. I just remembered Hunting Shack on some old 243 ammo I had.
HSMammunition.com
 

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