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Re: WILSON COMBAT 300 HAM'R [Re: Wilson Combat] #7689933 12/16/19 01:44 AM
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Originally Posted by Wilson Combat
Originally Posted by Rajuy
Ok, I went and bought some CFEBLK and 125gn Sierra Pro-Hunters. Friday, Started at 26gn and worked my way up to 27.5gn. I liked my results of 27.2, so I loaded up 20 @ 27.2 and went out this morning. I'm hearing the sweet spot is around 2600 FPS. I shot just 2 groups and both are "minute of deer", I was just hoping for a little better results. On Wilson Combats website, it states the the temperature was 90-100*. I'm in Nebraska and this morning when I chronographed my leads, it was 18* feel like 8*. My results: Ave 2331 FPS, ES 40, SD 17. I was .5 away from maximum
charge weight. So my questions are, could my low velocities be because of the temperatures here? How much velocity am I giving up because of said difference? If I did nothing more than wait for warmer temperatures, will my groups tighten up? Am I wasting resources by doing load development in such cold temperatures? Shat are your thoughts? [Linked Image]
[Linked Image]



What powder lot are you using?

What power scope are you using?

What's your barrel length?

I'm thinking your still below the "sweet" spot with this load. This cartridge shoots the best around 55K PSI. My personal loads with this bullet are 28.2gr of lot #2 or #3.

[Linked Image]
My scope power is 9 and my barrel length is 18". I will increase my loads and see what happens. But when I get into 2600 FPS with my temperatures?

Re: WILSON COMBAT 300 HAM'R [Re: Rajuy] #7690022 12/16/19 03:13 AM
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Rajuy, You have a PM. Look in the upper right corner of the page where your screen name is & a flashing envelope tells you have a private message. Daniel
BTW the CFEBLK is not supposed to temp sensitive.

Last edited by DLALLDER; 12/16/19 03:15 AM.




Re: WILSON COMBAT 300 HAM'R [Re: Rajuy] #7690123 12/16/19 12:04 PM
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Check this out: https://www.americanhunter.org/arti...e-temperature-affect-cartridge-velocity/
Essentially what it says though is that (depending on powder) the muzzle velocity can change by as much as 1.7 FPS per degree Fahrenheit. So the difference between Bill’s velocity at 90 in Texas will be substantially different than what you’re going to see at 10 degrees in Nebraska. :-)
If possible why not keep your gun and ammo warm until you’re all set up and ready to shoot and then chronograph that first shot and see if it makes a difference

Re: WILSON COMBAT 300 HAM'R [Re: Rajuy] #7690145 12/16/19 12:44 PM
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Originally Posted by Rajuy
Originally Posted by DLALLDER
Originally Posted by Wilson Combat
Originally Posted by Rajuy
Ok, I went and bought some CFEBLK and 125gn Sierra Pro-Hunters. Friday, Started at 26gn and worked my way up to 27.5gn. I liked my results of 27.2, so I loaded up 20 @ 27.2 and went out this morning. I'm hearing the sweet spot is around 2600 FPS. I shot just 2 groups and both are "minute of deer", I was just hoping for a little better results. On Wilson Combats website, it states the the temperature was 90-100*. I'm in Nebraska and this morning when I chronographed my leads, it was 18* feel like 8*. My results: Ave 2331 FPS, ES 40, SD 17. I was .5 away from maximum
charge weight. So my questions are, could my low velocities be because of the temperatures here? How much velocity am I giving up because of said difference? If I did nothing more than wait for warmer temperatures, will my groups tighten up? Am I wasting resources by doing load development in such cold temperatures? Shat are your thoughts? [Linked Image]
[Linked Image]



What powder lot are you using?

What power scope are you using?

What's your barrel length?

I'm thinking your still below the "sweet" spot with this load. This cartridge shoots the best around 55K PSI. My personal loads with this bullet are 28.2gr of lot #2 or #3.


Rajuy, Believe the man! He knows the 300 Ham'r inside & out. My 300 Ham'r with 18" barrel & Bills recommendations on the loads with the 130 gr bullet will make less than 1 inch consistently if I do my part, I am in East Texas and don't have to deal with your temps (Thank God) so I don't know what those same loads would do there. Daniel

Daniel,
I have no doubt about Bill and the Wilson team know there stuff. I know that I will get this down to under 1". I was just wondering if the temperature really has that much affect on velocities. Which 130 gr bullets are you referring to? Yes, the temperatures here in Nebraska sucks, well at least in the winter. This is when I miss Central Florida 😁!


Actually we did a low temp test at a SAAMI spec lab and CFEBLK is very temp stable, I doubt you will see more than 20fps from 20F to 100F. I can tell you that the following load is completely safe with powder lots #2 or #3.

Sierra 125gr SPT PH, 2.250" OAL
28.2gr CFEBLK
CCI 450
Starline or Sig case
Light taper crimp

I get around 2525fps from my 18" bbls (should be +/- 2500fps from a 16")

Re: WILSON COMBAT 300 HAM'R [Re: Wilson Combat] #7690562 12/16/19 10:42 PM
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Thanks Bill. I ordered the FCD from Lee. I will continue to load up to max and see what happens. Also, I'm using LC brass but every thing else is the same. Going to have some time Wednesday and Thursday to see what I can come up with.

Re: WILSON COMBAT 300 HAM'R [Re: Rajuy] #7691001 12/17/19 12:31 PM
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Originally Posted by Rajuy
Thanks Bill. I ordered the FCD from Lee. I will continue to load up to max and see what happens. Also, I'm using LC brass but every thing else is the same. Going to have some time Wednesday and Thursday to see what I can come up with.


I have not been able to get good results with the Lee FCD, I use a Redding .300 Blackout taper crimp die.

Re: WILSON COMBAT 300 HAM'R [Re: Wilson Combat] #7692443 12/18/19 08:56 PM
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Bill, Happy customer here!!!!! Do you have load data for the 150 Speer Blk bullets?
Thanks!!!

Re: WILSON COMBAT 300 HAM'R [Re: Wilson Combat] #7692459 12/18/19 09:19 PM
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Originally Posted by Wilson Combat
Originally Posted by SwatDude1
Originally Posted by Wilson Combat
Originally Posted by SwatDude1
Hello Gentlemen,

First post here. I feel extremely lucky to have come across your forum and this thread. I would consider myself an early adopter of the 300 HAM'R and have already assembled a few builds. The 1st was an 8" Pistol with SLR Rifleworks linear compensator. I have used four different factory loads and have settled in on the 130 FNHC per Bill's recommendations. I was surprised the find that all four rounds had points of aim within an inch of each other at 50 yards. Also, I should have just stuck a coffee can where the brass was ejecting due to its amazing consistency, a testament to Wilson Combat's quality control. Bill or anyone assembling HAM'R AR's my question for you is this... can you please tell me if you are using standard buffers and springs with the the 300 HAM'R? I have to say the 8-inch barrel with pistol gas was hitting me pretty hard compared to standard 5.56 ammo. I was running a flat wire spring and H2 buffer. All brass was ejecting at 4 o'clock, with 125 TNT, 130 HP, 130 FNHC and 150 SST, so I felt like I didn't want to go to a higher power spring or H3 and chance the bolt not locking on an empty mag. Due to my previous law enforcement experience I have never been a big fan of adjustable gas blocks for a "duty" gun.

I am going to try the upper this weekend on my SBR lower with Maxim Defense stock and JP captured spring with (2) tungsten weights to see how it performs. That is if I can get the lower completed today. I also have a 16-inch lightweight 300 HAM'R build that I can't get to run due to what seems like being undergassed, but I was running a titanium bolt carrier group and ran out of time to drop a standard one to try and eliminate the carrier. I used a bunch of VSeven parts and got the rifle without optic in at 5 lbs even.

I also just got a WC 11.3 inch HAM'R barrel for my truck gun but I just have to find time to assemble it.


We run chrome silicon flatwire buffer springs that are somewhat heavier than a std AR15 buffer spring, more like a Wolff HD spring with a standard buffer.

I've seen guns not run and by changing a bolt, carrier or complete BCG they run perfect. I'm not sure if it's component friction, gas ring fit or a gas key leak???

I don't have any experience with Ti carriers since I don't want any part in my guns that reduce the reliability or durability so I just run full weight M16 carriers. We haven't really had any issues with the 16" bbls so unless somehow one got out without our std spec port size I doubt it's a bbl issue.


Thanks for the quick response Bill. Is the spring you speak of available on your website? Also looking forward to the Round nose HC ammo hoping it will have a higher BC than the FN version. I don't reload (yet) so I am at your mercy for 300 HAM'R ammo choices. Finally, I am fairly confident the issue with the 16-inch is due to the titanium carrier. Thought I would take a chance with it but I have a standard milspec carrier I'll try and see if that corrects the problem.


The part # for the buffer spring is TR-FWBS40

I'm not sure when the 130gr HHC loads will be on the web site, I know we received 100k of the bullets, just not sure where they are on the schedule for loading. We'll soon have 4 new loads 95gr Lehigh CC at 2825fps, 110gr Hornady SP at 2700fps, 110gr Hornady V-MAX at 2700fps and 150gr Bonded at 2300fps

150gr Bonded



What length buffer tube is the buffer spring you have listed here for? (TR-FWBS40) I ordered one several months back and it will not run at all in my .300 Ham'r also tested in a .458 socom with the same buffer tube setup and both refuse to cycle far enough back to pick up the next round or lock back on the bolt face, will hang on the carrier face only. the gunsmith I use says it may be for an A2 buffer tube.

Also I did receive one of the older barrels with too small of a gas port size, the issue has been corrected and will run reliably with 125-150 gr. bullets, however I still have the occasional hiccup with the 110 gr. v-max not cycling reliably.

barrel is an 18" Wilson ranch profile with SLR gas block opened up 90% of the way running standard spring and buffer weight at this time

Re: WILSON COMBAT 300 HAM'R [Re: GSI] #7692902 12/19/19 12:22 PM
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Originally Posted by GSI
Bill, Happy customer here!!!!! Do you have load data for the 150 Speer Blk bullets?
Thanks!!!


I'm loading 25.5gr of lot #3 with a 2.255" OAL right now which is giving me 2300fps from my "control" 18" and shoots right at 1" out for multiple bbls. I'd suggest you start with 25.3gr and work up to 2290-2300fps. If your running a 16" target velocity will be around 2275fps

Re: WILSON COMBAT 300 HAM'R [Re: dlrz71] #7692907 12/19/19 12:25 PM
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What length buffer tube is the buffer spring you have listed here for? (TR-FWBS40) I ordered one several months back and it will not run at all in my .300 Ham'r also tested in a .458 socom with the same buffer tube setup and both refuse to cycle far enough back to pick up the next round or lock back on the bolt face, will hang on the carrier face only. the gunsmith I use says it may be for an A2 buffer tube.

Also I did receive one of the older barrels with too small of a gas port size, the issue has been corrected and will run reliably with 125-150 gr. bullets, however I still have the occasional hiccup with the 110 gr. v-max not cycling reliably.

barrel is an 18" Wilson ranch profile with SLR gas block opened up 90% of the way running standard spring and buffer weight at this time
[/quote]

Can you count the coils on your spring for me so we can confirm that it's the correct one? All our buffer tubes are mil-spec carbine, we don't use any A2 length tubes.

Also are you running a standard buffer?

Re: WILSON COMBAT 300 HAM'R [Re: Wilson Combat] #7692943 12/19/19 01:37 PM
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The buffer spring does indeed have 40 coils and i am running a CMC standard weight buffer

Re: WILSON COMBAT 300 HAM'R [Re: OddJob94] #7693369 12/19/19 09:07 PM
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Originally Posted by OddJob94
The buffer spring does indeed have 40 coils and i am running a CMC standard weight buffer


That's the spring I run in all of my guns? I'd try clipping 3 coils off, which will still be a heavier spring than a mil-spec 5.56 spring.

Re: WILSON COMBAT 300 HAM'R [Re: Wilson Combat] #7693383 12/19/19 09:23 PM
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It runs fine with the standard spring and buffer for the 125-150 gr bullet loads but not reliably with the 110 gr. v-max at 2595 FPS it short strokes still

Re: WILSON COMBAT 300 HAM'R [Re: OddJob94] #7693789 12/20/19 12:38 PM
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Originally Posted by OddJob94
It runs fine with the standard spring and buffer for the 125-150 gr bullet loads but not reliably with the 110 gr. v-max at 2595 FPS it short strokes still


What powder are you using?

Re: WILSON COMBAT 300 HAM'R [Re: djones] #7693896 12/20/19 03:17 PM
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Originally Posted by djones
pork puffer... it's strickly run and gun for the team. they won't even stop long enuf to let me in the pic. but i have some pix of the rifle. and i can say... hopefully without offending anyone (hehehe)... this upper runs and functions flawlessly.

[Linked Image]
[Linked Image]

I'm actually equally impressed with the set up of your drag chain. I make a cut through the rear tendon and a snap link, looks like you have a piece of pipe, that slides down and cinches tight? Post a close up, please.


An unethical shot is one you take, that you know you shouldn't.
Re: WILSON COMBAT 300 HAM'R [Re: Wilson Combat] #7693898 12/20/19 03:22 PM
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Originally Posted by Wilson Combat
Originally Posted by OddJob94
It runs fine with the standard spring and buffer for the 125-150 gr bullet loads but not reliably with the 110 gr. v-max at 2595 FPS it short strokes still


What powder are you using?


28.2 gr CFE BLK @ 2571 fps
27.7 gr A1680 @2595 fps

WC Brass, CCI 450, 110 gr Hornady V-max, 2.255" OAL

Re: WILSON COMBAT 300 HAM'R [Re: onlysmith&wesson] #7694334 12/20/19 09:11 PM
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OinK made these from a design he saw from DoubleNuttSpy. square tubing with chain and carabiner. one end link is welded to the tube and bent up so the rest of the chain can slide through easily. prolly about 4' of chain? they work very well.

[Linked Image]

here's a vid from last night. had a jam on the last pig, but got it cleared and was able to get 'em all. forgot to open the bag on the brass catcher and the brass piled up in the ejection port.


Re: WILSON COMBAT 300 HAM'R [Re: djones] #7694375 12/20/19 09:53 PM
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Originally Posted by djones
OinK made these from a design he saw from DoubleNuttSpy. square tubing with chain and carabiner. one end link is welded to the tube and bent up so the rest of the chain can slide through easily. prolly about 4' of chain? they work very well.

[Linked Image]

here's a vid from last night. had a jam on the last pig, but got it cleared and was able to get 'em all. forgot to open the bag on the brass catcher and the brass piled up in the ejection port.





Thanks, I been shooting my share. I like this.


An unethical shot is one you take, that you know you shouldn't.
Re: WILSON COMBAT 300 HAM'R [Re: OddJob94] #7694836 12/21/19 01:30 PM
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Originally Posted by OddJob94
Originally Posted by Wilson Combat
Originally Posted by OddJob94
It runs fine with the standard spring and buffer for the 125-150 gr bullet loads but not reliably with the 110 gr. v-max at 2595 FPS it short strokes still


What powder are you using?


28.2 gr CFE BLK @ 2571 fps
27.7 gr A1680 @2595 fps

WC Brass, CCI 450, 110 gr Hornady V-max, 2.255" OAL


Send me a PM and we'll make a plan to ck the port size

Re: WILSON COMBAT 300 HAM'R [Re: dlrz71] #7695893 12/22/19 05:47 PM
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I'm getting closer to having my 300 Ham'r dialed in. I still have a few variables like having my brass all trimmed square and to the same length (still waiting for pilot for trimmer), and my taper crimp. I had the chance to go out this morning and shoot a couple 3 round groups at 100 yards and Chrono my 28.2gr CFEBLK load. I'm happy with the results. [Linked Image]
[Linked Image]

Re: WILSON COMBAT 300 HAM'R [Re: Wilson Combat] #7697270 12/24/19 03:23 AM
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Lot#3? I missed what that is. I use either CFE BLK or 1680.

Re: WILSON COMBAT 300 HAM'R [Re: Thornroht] #7697344 12/24/19 05:41 AM
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Originally Posted by Thornroht
I just joined the forum for the purpose of posting in this thread. I've enjoyed the comments here immensely. I own an 11.3 inch Wilson Combat 300 HAM'R and I absolutely love it. It has become my do-everything gun. The combination of increased bullet weight and still high velocities makes it more useful to me than a 5.56/.223, but I still get it in a light weight AR and with a relatively light recoil. Incredible!

Bill, I have a request. I don't reload, but I would love to buy a 300 HAM'R cartridge designed for AR pistol lengths. One that maximizes velocities for the short barrel. You've already posted on this thread several thoughts about alternative powders that might help this. I would just like to encourage you to bring a product like this to market, folks like me will buy it. I'm already planning to buy more 150 gr ammo based on the data you showed about less velocity loss in short barrels. You wouldn't need to offer all the bullet weights, even just one round optimized for the 11.3 in barrel (maximizing accuracy with weight and velocity) would be very much appreciated.

And I would love to test it and give my feedback!


I'm going to go ahead and second this. I have two 8-inch 300 HAM'R build and one 11.3". Would totally buy the 130 Hot Core or the higher BC150 gr bullet mentioned earlier in this thread with short barrel optimized powders.

Re: WILSON COMBAT 300 HAM'R [Re: GSI] #7697476 12/24/19 02:31 PM
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Originally Posted by GSI
Lot#3? I missed what that is. I use either CFE BLK or 1680.


Lot #3 is the lot number for the CFE-BLK used in developing the loads. This by no means limits you to this lot, it just means that we did find slight lot to lot variations in this powder. About the only difference will be slightly different velocities and explains way you may see different velocities posted from person to person.

Lot variations occur in most powders, but Bill wanted to be as up-front as he could when relating load data. In my testing I found a plus/minus of 20-25 fps to be normal from lot to lot.

Re: WILSON COMBAT 300 HAM'R [Re: Graycard] #7697693 12/24/19 06:46 PM
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Originally Posted by Graycard
Originally Posted by GSI
Lot#3? I missed what that is. I use either CFE BLK or 1680.


Lot #3 is the lot number for the CFE-BLK used in developing the loads. This by no means limits you to this lot, it just means that we did find slight lot to lot variations in this powder. About the only difference will be slightly different velocities and explains way you may see different velocities posted from person to person.

Lot variations occur in most powders, but Bill wanted to be as up-front as he could when relating load data. In my testing I found a plus/minus of 20-25 fps to be normal from lot to lot.


Yes Greycard, but production lots #2 and #3 seem to be almost identical. I've already used up all of my lot #2 and almost all of lot #3, so I'll be switching to #4 soon. Ammo up at the company is already being loaded with lot #4, but I haven't asked how it compares to #2 and #3.

Re: WILSON COMBAT 300 HAM'R [Re: dlrz71] #7697838 12/24/19 10:58 PM
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Speaking of load data. I've gotten my hands on some Sierra 150gr FN #2000 bullets (designed for 30-30). Is there any load data for this round out there? My concerns are powder charge (don't want to over-do it) and OAL (don't want to get into the lands) as the bullet seems to have the o-give a bit further forward than most.

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