Gotcha. It's not a deal breaker. I went ahead and ordered the 1-15 twist 11.3" Barrel for my pistol build. I've got some Lake City brass coming to convert to Ham'r brass as it's pretty hard to get new Ham'r brass right now.

I've been playing with the Hornady 160gr FTX #30396 (Marlin Express variant) lately and have now shot about 20 hogs with it. It shoots pretty good and kills hogs good with the most penetration I've seen with any bullet I've tried so far.

At least all of these hogs were impressed with it ........

Looks like the new Sierra 125 gr TGK game changer is a bit ong for the 300 hamr 1.115

Dang. If that bearing surface were just a little further forward that might have been a nice bullet for the Ham'r. I hope you have another user for them and didn't get them just to try in the Ham'r. I had planned to but hadn't needed to place an order lately. Maybe they'll come out with a Model 7 in .300 Ham'r with a little longer throat that those could be loaded out further for!

On another note my 11.3" barrel came in today! I'll post some pictures once it's complete. It'll be my forth Ham'r build. And I'm working on getting everything together to make my own brass from LC brass. Jig should be in Friday.

That bullet takes up way too much powder space too.

I agree it would put it somewhere in the 24 to 25 charge weight . I also ordered some 123 grain gold dot To try in my 7.62x 39 the gold dot Seems optimal 300 hamr the only problem it's in 310 Cal if Spieer could produce a 308 virgin will be great for self-defense my opinion

I wonder if anyone reloading 300ham'r had the opportunity to measure the case volume of Starline, WC or converted LC?
My plan is to feed it to simulation software along SAAMI specs.

Thanks, Bill. I appreciate you helping to keep our Ham'r's running.

It's hot and windy outside so I'm inside cooling off and playing with my cutoff jig and measuring converted 5.56 cases. I measured a few .223 cases I had laying around just to see how close they were to the 5.56 brass. All numbers are from resized brass. Here's what I found:

Case volume(in gr):
WC 300 HAM'R 30.1
LC10 29.9
LC11 29.9
TAA09 29.5
TAA10 29.9
IMI1215 30.9
IMI0615 30.9
A .223 29.9
R-P 223 REM 30.5
HORNADY 233 REM 30.5

Neck OD:
WC 300 HAM'R .3245"
LC10 .323"
LC11 .3235"
TAA09 .330
TAA10 .3245"
IMI1215 .3235"
IMI0615 .3235"
A .223 .3285"
R-P 223 REM .3235"
HORNADY 233 REM .325"

Neck thickness:
WC 300 HAM'R .0083
LC10 .0085"
LC11 .009"
TAA09 .0123"
TAA10 .0095"
IMI1215 .0093"
IMI0615 .009"
A .223 .0115"
R-P 223 REM .009"
HORNADY 233 REM .0098"

The brass I made did have a slightly longer OAL than the WC brass I have, so there will likely be slightly less capacity if it were the same length. The TAA brass is Taiwanese in origin and I had heard that it was thicker than Lake City brass and that was the case with the 09 stamped brass but not with the 10 stamped. This was measured with a small sample size so don't take what I found to be all encompassing. The IMI was very interesting with the most internal volume but it didn't resize very smoothly and the necks weren't very concentric. I think I'll pick up a LEE collet die to run all of the cases into after sizing up. I did anneal the .223 cases before sizing as they didn't appear to have any sign of having been annealed. I'm unsure of who made the "A .223" brass but it did have a bit thicker neck, second only to the TAA09 brass. The R-P and Hornady .223 brass had similar neck thickness to the 5.56 brass but greater internal volume.

I won't be using the IMI, A, R-P, or Hornady brass as I don't have enough to make a batch of them. I'll convert more TAA brass and see if it's worth messing with or not.

My 11.3" pistol build is mostly assembled. Just waiting for a Larue MBT and an Accu-Tac flash hider. Time to get to work converting brass I guess! I hope this is helpful.

Lots of good info Shadow

You had better load some of the cases with the thick necks and ck to make sure they will chamber before you spend too much time on them. Some brands with thick necks like PPU won't chamber.

Also so you can advise if the WC case you measured volume on was mfg by Starline or Sig look at the photo below, the fired cases is Starline mfg and the UP case is Sig mfg.

It's Starline manufactured. I got that batch before you switched over to SIG. I want to fire form all of that brass and check the volume after running though a sizing die again. Have you any data for volume on SIG resized brass? The dimensions I've found show a maximum neck outer diameter as .332". Is that correct? I imagine I'll have a couple that will be out of spec after loading a bullet. If my calipers are correct I should have .002-.003" neck tension with every brand of brass.

Starline has brass available now.

The case drought it over