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Post by jimmykip on Jul 17, 2021 17:14:09 GMT -5
So I picked up a barrel and plug from Hank the other day and I’m dropping it off to my gunsmith on Monday. I’m new to 40’s and I don’t use a brake. Some research seems to indicate that for 250-275 grain bullets, the 4895’s and 4166 in the 68 to 72 grain range might be a good place to start? Tks, Jimmy.
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Post by hillbill on Jul 17, 2021 18:50:37 GMT -5
without a brake I would stick to the 250s, likely H-4198 will work but the charge weight? I would start at 50 Grains and not go higher than 56 or so in a bolt gun, a little less in a 1" barrel.
Maybe someone else will chime in but I know some guys are using that powder with the 250, with a 275 I think you will get substantial recoil minus the brake, I have shot 275s in the .45 with no brake and it's no fun.
To get to the sweet spot in the burn rate on the two powders you mentioned speed will be up there and it will bite hard unless it's a pretty hefty gun.
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Post by jimmykip on Jul 17, 2021 19:18:21 GMT -5
Tks hillbill. I shoot my full shank 45’s with 65 grains of n120 and a 275 with no brake. That’s about my limit of recoil. With the 4198 charges you mentioned, do I need my builder to add any powder chamber? The barrel is hanks #6. Tks, Jimmy.
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Post by hillbill on Jul 17, 2021 19:26:42 GMT -5
As long as you stick to the light bullets and low charges you should be fine with a powder chamber.
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Post by buckeye68 on Jul 18, 2021 0:13:09 GMT -5
I use the Pittman 250’s with a wool wad and 74 grains of H4895 in my bolt gun with a 1.250” shank. It has a break and it’s a dream to shoot. Maybe I’ll man up and shoot it without one of these days.
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Post by jimmykip on Jul 18, 2021 6:19:21 GMT -5
As long as you stick to the light bullets and low charges you should be fine with a powder chamber. So, iMr and H 4198 would still be interchangeable with the 40? And did you mean to say I’d be ok without a chamber or do I need one? Tks. |
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Post by hillbill on Jul 18, 2021 8:13:19 GMT -5
They pretty much interchange
you will not need a chamber unless you want to shoot the heavier loads.
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Post by jimmykip on Jul 19, 2021 17:16:20 GMT -5
I use the Pittman 250’s with a wool wad and 74 grains of H4895 in my bolt gun with a 1.250” shank. It has a break and it’s a dream to shoot. Maybe I’ll man up and shoot it without one of these days. Do ya have a powder chamber? And your 1..250 shank is 5 inches? Sorry for all the questions. |
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Post by jimmykip on Jul 19, 2021 17:17:50 GMT -5
I told my builder to drill out .500 past the end of the plug. Figured it couldn't hurt.
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Post by jimmykip on Aug 31, 2021 20:09:31 GMT -5
Well, the gun’s just about ready to head to the range with. Scopes coming in Thursday and Should be shooting Sunday. The barreled action came out great but it looks like I’ve only got 3 inches of full shank past the lug, so I guess the #6’s come with a 4 inch shank to start with. I guess that’s sufficient. I’ve got a bag of 250’s to size and a jug of imr 4895 to measure up. Probably start at 70 grains and work my way up to the mid 70’s. My powder chamber won’t let me use 4198 so I’m thinking that I’m probably going to be wishing that I got a brake. If so, it’s not too much of a problem. Couple of weeks and a little more cash out. I definitely should have researched this build a bit more thoroughly. But, hey, I can do that on the next one. If I wanted to full form 40 cal., I’d want a .392/.400? Jimmy.
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Post by hillbill on Sept 1, 2021 6:45:57 GMT -5
I full form the 402 bullets now in my 1760 gun, not very deep grooves but it definately makes a difference in the way the powder burns vs smooth forming but I'm shooting very long heavy bullets (350s).
the lighter bullets may not benifit from full forming as they are easier to swell.
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Post by joelmoney on Sept 1, 2021 6:57:21 GMT -5
Bill are you using a wad with your 1760 gun?
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Post by sew on Sept 4, 2021 9:13:45 GMT -5
I have 3 40s: 10ML2/26”PN 401/408 no powder chamber; the ultra lite 24”, 1.15”for 5”, 60g chamber(based on 4166) 40 Brux14”T, and a 40 cal RC, 1.2” for 6”, 26” RC 14”T , 60g powder chamber (4166).
If I had it to do again, on the Ultralite, I’d have a 50g chamber vs the 60g. Why? So I could use faster powders, lighter bullets and keep pressures up to where the powders could be more efficient and cleaner burning. 4198 and 228g bullets would be great <60g. DI will help some in helping cleanliness. For lower velocity, lighter bullets in hunting loads, obtaining sufficient pressure for clean burning, using a fast enough powder is helpful.
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Post by hillbill on Sept 4, 2021 18:01:14 GMT -5
Yes I am using wads in my 1760 gun out of necessity, without them it won't swell the bullet very well.
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Post by Ninering62 on Sept 15, 2021 10:27:54 GMT -5
I have 3 40s: 10ML2/26”PN 401/408 no powder chamber; the ultra lite 24”, 1.15”for 5”, 60g chamber(based on 4166) 40 Brux14”T, and a 40 cal RC, 1.2” for 6”, 26” RC 14”T , 60g powder chamber (4166). If I had it to do again, on the Ultralite, I’d have a 50g chamber vs the 60g. Why? So I could use faster powders, lighter bullets and keep pressures up to where the powders could be more efficient and cleaner burning. 4198 and 228g bullets would be great <60g. DI will help some in helping cleanliness. For lower velocity, lighter bullets in hunting loads, obtaining sufficient pressure for clean burning, using a fast enough powder is helpful. Thanks for your post sew. This is some of the info I need too. I'm having an TC Omega custom .40 SML built right now. I got a Brux 1:14T 1.20"x5" str taper - .750" I plan on using this gun for deer, pigs, black bear from hand shaking range out to 500yds or so. I am going to use the Fury .400 240gr OT as the main bullet. It will have a powder chamber, but IDK what size it should be. I was considering using H4895 as my powder, but I've read & heard about H322 as well. I have zero exp here. I don't plan on shooting heavy bullets ( 250gr - 275gr would be max ) and I'm not chasing insane Mv's., that 240gr bullet at 2800fps will do everything I'll ever need & hunt. I did get a brake ( old & broken up body not entertained by heavy recoil & unable to manage it to shoot to my capabilities anymore ) I got an Area 419 HELLFIRE Direct Thread muzzlebrake. If theres a better suited powder for my intended use with what I listed, plz enlighten me & include specifics & technical stuff & why that is better suited. Thanks |
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Post by sew on Sept 17, 2021 12:28:47 GMT -5
I have a lot of H322, 4198, VV110 and H4895. Some Varget. I think that likely there are some VV powders that would be cleaner burning than what I’ll be using. As it is, I’ll likely run a brush through between each shot. Not ideal but will help have a consistently fouled barrel.
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