.300 WinMag, H-1000, & 220 SMK
- Thread starter Ishallbie O'Cullkillin
- Start date
Re: .300 WinMag, H-1000, & 220 SMK
That's a good combo. I would also look at Retumbo. Retumbo will get you a few more fps than H1000.
That's a good combo. I would also look at Retumbo. Retumbo will get you a few more fps than H1000.
Re: .300 WinMag, H-1000, & 220 SMK
+1 ^^. I used Retumbo for my 220 SMK's. 76 gr Retumbo for 220 SMK Moly. Got 2810fps. Could have gone faster, but didn't. Useing H-1000 for the 208 A-Max Moly @ 2950 fps.
+1 ^^. I used Retumbo for my 220 SMK's. 76 gr Retumbo for 220 SMK Moly. Got 2810fps. Could have gone faster, but didn't. Useing H-1000 for the 208 A-Max Moly @ 2950 fps.
Re: .300 WinMag, H-1000, & 220 SMK
Thanks guys..... The only reason i bring it up is because I am breaking 800 yds, and heard that the new Mk 248 Mod1 ammo is using these components, and I want an established round to use for development of my Accubond moa load. Rem 700 .300 Win mag, sporter wt. barrel
Thanks guys..... The only reason i bring it up is because I am breaking 800 yds, and heard that the new Mk 248 Mod1 ammo is using these components, and I want an established round to use for development of my Accubond moa load. Rem 700 .300 Win mag, sporter wt. barrel
Re: .300 WinMag, H-1000, & 220 SMK
If your going to reload, find the best load for your particular rifle as opposed to trying to make you own version of a military load. Some reloading manuals (like Sierra and Nosler) give 'accurate loads' for specific calibers. I would look there first. IMHO. YMMV.
Good luck
Jerry
If your going to reload, find the best load for your particular rifle as opposed to trying to make you own version of a military load. Some reloading manuals (like Sierra and Nosler) give 'accurate loads' for specific calibers. I would look there first. IMHO. YMMV.
Good luck
Jerry
Re: .300 WinMag, H-1000, & 220 SMK
I use 220g RN with H1000, and get well into the velocity your looking for. This out of a Stock Savage pencil barrel. I will look up the data on the loads when I get home tonight.
I use 220g RN with H1000, and get well into the velocity your looking for. This out of a Stock Savage pencil barrel. I will look up the data on the loads when I get home tonight.
Re: .300 WinMag, H-1000, & 220 SMK
Thanks, Handloader. How was the Accuracy? Do you remember the charge wt? Sierra manual is a great place to start, however, for the multiple rifles & pistols I have loaded for, their loads have consistently produced lower velocities for me than what they list. I am learning to live with it.
Thanks, Handloader. How was the Accuracy? Do you remember the charge wt? Sierra manual is a great place to start, however, for the multiple rifles & pistols I have loaded for, their loads have consistently produced lower velocities for me than what they list. I am learning to live with it.
Re: .300 WinMag, H-1000, & 220 SMK
I realize this is not the answer to your question, but one of the reasons the military chose the 220g SMK over other projectiles because it is tangent ogive and would be more forgiving in a variety of rifles. Since you're loading for one rifle, you'd be better served by the 208/210's. If you can get them to run in your platform, they'll deliver more energy downrange and be affected by wind less than the 220. I had thought the same thing about trying to duplicate MK248, but the Sierra guys convinced me to put my energies elsewhere. My 208g Amax's are loaded .010 off the lands over 76.4g of H1000 and clocking 2875fps (4000f ASL)out of a 22" barrel. (last time I chrono'd) This gives me 7.1 mils to 1000 yds.
John
I realize this is not the answer to your question, but one of the reasons the military chose the 220g SMK over other projectiles because it is tangent ogive and would be more forgiving in a variety of rifles. Since you're loading for one rifle, you'd be better served by the 208/210's. If you can get them to run in your platform, they'll deliver more energy downrange and be affected by wind less than the 220. I had thought the same thing about trying to duplicate MK248, but the Sierra guys convinced me to put my energies elsewhere. My 208g Amax's are loaded .010 off the lands over 76.4g of H1000 and clocking 2875fps (4000f ASL)out of a 22" barrel. (last time I chrono'd) This gives me 7.1 mils to 1000 yds.
John
Re: .300 WinMag, H-1000, & 220 SMK
Sorry it took so long to post this for you, here are my data:
78 grains of H1000
tem 72 F
Barametric Presure= (did not log, but clouds and weather coming in so pressure was dropping)
Seated 0.0165 off the Lands (COL was 3.4400)
Hornady Interlock 220grain Round Nose (#3090)
CCI LR Mag 250 primer
Velocity (feet/sec)measured 10feet from muzzle= 2852, 2887,2875, 2877, Error
Group was 0.75inch at 100 yards
Sorry it took so long to post this for you, here are my data:
78 grains of H1000
tem 72 F
Barametric Presure= (did not log, but clouds and weather coming in so pressure was dropping)
Seated 0.0165 off the Lands (COL was 3.4400)
Hornady Interlock 220grain Round Nose (#3090)
CCI LR Mag 250 primer
Velocity (feet/sec)measured 10feet from muzzle= 2852, 2887,2875, 2877, Error
Group was 0.75inch at 100 yards
Re: .300 WinMag, H-1000, & 220 SMK
One more note: This is over the max load from Hornady, but is the MAX load from both Lyman 49th edition, and Richard Lee's second edition. I had ZERO pressure signs, and feel that the load could have been hotter, but this is a 200 yard hunting rifle for me. This load traveled through damn near three feet of a deer at 30 yards on a frontal and quartering shot, breaking the left scapula, two ribs, traveling through the left lung, heart, all the guts, through the right rear ham, broke the Femur bone, and finally lodged under the skin behind the right rear ham. Bullet preformed as advertised, and retained much of the original weight (I have yet to weigh it). I hope that helps, PM me if you have further questions.
One more note: This is over the max load from Hornady, but is the MAX load from both Lyman 49th edition, and Richard Lee's second edition. I had ZERO pressure signs, and feel that the load could have been hotter, but this is a 200 yard hunting rifle for me. This load traveled through damn near three feet of a deer at 30 yards on a frontal and quartering shot, breaking the left scapula, two ribs, traveling through the left lung, heart, all the guts, through the right rear ham, broke the Femur bone, and finally lodged under the skin behind the right rear ham. Bullet preformed as advertised, and retained much of the original weight (I have yet to weigh it). I hope that helps, PM me if you have further questions.
Re: .300 WinMag, H-1000, & 220 SMK
I use 80gr with 190 Berger vld's touching the lands. 3150fps out of 28"barrel 20.2 MOA at 1000
I use 80gr with 190 Berger vld's touching the lands. 3150fps out of 28"barrel 20.2 MOA at 1000
Re: .300 WinMag, H-1000, & 220 SMK
+1 on the Amax, don't have any Bergers though. The VLD probably beats the 220SMK B.C. wise, even though it's 10grs lighter. I will try the Hornady 208's, & the 220SMK's, which are left over from a .300 whisper projoect. Seemed like a waste to be plinking the 220SMK's at less than 100yds, so I went to the cheaper 220Pro Hunter. No More .5" groups, but they will do.
Thanks for the responses. Merry Christmas.
+1 on the Amax, don't have any Bergers though. The VLD probably beats the 220SMK B.C. wise, even though it's 10grs lighter. I will try the Hornady 208's, & the 220SMK's, which are left over from a .300 whisper projoect. Seemed like a waste to be plinking the 220SMK's at less than 100yds, so I went to the cheaper 220Pro Hunter. No More .5" groups, but they will do.
Thanks for the responses. Merry Christmas.
Re: .300 WinMag, H-1000, & 220 SMK
AlcoholicusRex,
I also load H-1000 for my son's 300 Win Mag:
Bullet: Nosler Partition 220 gr
Federal 215 Primer
Federal Cases
76 grains H-1000
Average velocity 2788 FPS
AlcoholicusRex,
I also load H-1000 for my son's 300 Win Mag:
Bullet: Nosler Partition 220 gr
Federal 215 Primer
Federal Cases
76 grains H-1000
Average velocity 2788 FPS
Re: .300 WinMag, H-1000, & 220 SMK
Just picked up a Savage 112BVSSf, a limited production .300WM varmint rifle, online for a grand total of $675.00 after fees. Worked up to 78gr H1000 with 220SMK and achieved 1/2moa performance at 2840fps. Primers looked good, still rounded, no cratering, but I noticed that the bolt took slightly more effort to open than usual. Is that a sign of excessive pressure? Does it fall into the category of sticky bolt lift?
Just picked up a Savage 112BVSSf, a limited production .300WM varmint rifle, online for a grand total of $675.00 after fees. Worked up to 78gr H1000 with 220SMK and achieved 1/2moa performance at 2840fps. Primers looked good, still rounded, no cratering, but I noticed that the bolt took slightly more effort to open than usual. Is that a sign of excessive pressure? Does it fall into the category of sticky bolt lift?
Re: .300 WinMag, H-1000, & 220 SMK
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: AlcoholicusRex</div><div class="ubbcode-body">Just picked up a Savage 112BVSSf, a limited production .300WM varmint rifle, online for a grand total of $675.00 after fees. Worked up to 78gr H1000 with 220SMK and achieved 1/2moa performance at 2840fps. Primers looked good, still rounded, no cratering, but I noticed that the bolt took slightly more effort to open than usual. Is that a sign of excessive pressure? Does it fall into the category of sticky bolt lift?</div></div>
Your chamber might be a little tight, but who knows. 78 grains might be a bit hot. Does this happen with a lighter charge?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: AlcoholicusRex</div><div class="ubbcode-body">Just picked up a Savage 112BVSSf, a limited production .300WM varmint rifle, online for a grand total of $675.00 after fees. Worked up to 78gr H1000 with 220SMK and achieved 1/2moa performance at 2840fps. Primers looked good, still rounded, no cratering, but I noticed that the bolt took slightly more effort to open than usual. Is that a sign of excessive pressure? Does it fall into the category of sticky bolt lift?</div></div>
Your chamber might be a little tight, but who knows. 78 grains might be a bit hot. Does this happen with a lighter charge?
Re: .300 WinMag, H-1000, & 220 SMK
Man, I sure think seating depth has a LOT to do with it. I'm at .010 off the lands with SMK 220, with win brass, rem 9 1/2m primers 73.5gr of H1000 and, I'm at about 2875 and, it's a HOT load. I'm up only about 26moa from a 100yd zero at 1000yds at 500ft above sea level and 90 degrees.
This load does wallow out your primer pockets ( and flatten them )
I'm going to find a lower accuracy node for my rifle.... I'm just not willing to continue shootin loads that hot in my rifle.
If I were to back off the lands, I've shot 76.5gr but, I was nowhere near the lands as I am currently.
FWIW, the 73.5gr .010 off the lands load with the SMK220 is printing some very nice groups. When I found the load I had two groups... one at 73.6gr that was a .261" 5 shot group and one that was at 73.3gr that was a .31 5 shot group so, I just started loading at 73.5 and called it a day.
I haven't been loading for or shooting mine very long so, I don't have a lot of experience with the a-max or the vld yet but, I'll load for it too and see what I can do with those.
Honestly though, groups as small as it's printing now are just fine with me... when you're shooting out at yardage, it's not going to be the rifle's fault if you miss.
In fact, I have a 12" plate that I shot at the 1000yd line last Monday.... wind was shifting so, it's pretty funny to see a stripe across the gong about 2.5" from top to bottom going from 9 o'clock to 3 o'clock. Looks kind of like a racing stripe LOL
Man, I sure think seating depth has a LOT to do with it. I'm at .010 off the lands with SMK 220, with win brass, rem 9 1/2m primers 73.5gr of H1000 and, I'm at about 2875 and, it's a HOT load. I'm up only about 26moa from a 100yd zero at 1000yds at 500ft above sea level and 90 degrees.
This load does wallow out your primer pockets ( and flatten them )
I'm going to find a lower accuracy node for my rifle.... I'm just not willing to continue shootin loads that hot in my rifle.
If I were to back off the lands, I've shot 76.5gr but, I was nowhere near the lands as I am currently.
FWIW, the 73.5gr .010 off the lands load with the SMK220 is printing some very nice groups. When I found the load I had two groups... one at 73.6gr that was a .261" 5 shot group and one that was at 73.3gr that was a .31 5 shot group so, I just started loading at 73.5 and called it a day.
I haven't been loading for or shooting mine very long so, I don't have a lot of experience with the a-max or the vld yet but, I'll load for it too and see what I can do with those.
Honestly though, groups as small as it's printing now are just fine with me... when you're shooting out at yardage, it's not going to be the rifle's fault if you miss.
In fact, I have a 12" plate that I shot at the 1000yd line last Monday.... wind was shifting so, it's pretty funny to see a stripe across the gong about 2.5" from top to bottom going from 9 o'clock to 3 o'clock. Looks kind of like a racing stripe LOL
Re: .300 WinMag, H-1000, & 220 SMK
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: AlcoholicusRex</div><div class="ubbcode-body">Just picked up a Savage 112BVSSf, a limited production .300WM varmint rifle, online for a grand total of $675.00 after fees. Worked up to 78gr H1000 with 220SMK and achieved 1/2moa performance at 2840fps. Primers looked good, still rounded, no cratering, but I noticed that the bolt took slightly more effort to open than usual. Is that a sign of excessive pressure? Does it fall into the category of sticky bolt lift? </div></div>
How many firings on your brass? I ran into this with some Federal brass after rebarreling. I full length sized the brass (IIRC, they had 7-8 firings already... a lot) to fit the new chamber but was getting sticky bolt lift during load development at loads that should have been nominal.
Long story, short... I was getting incipient head separation.
Some rounds were showing the faintest line above the web (a little above the belt).
Went to new brass and those loads work fine. Check your brass on the inside with a bent paper clip. If you feel a notch just above the web, toss 'em.
John
ETA: 78g *might* be a little stout, depending on what brass you use. I'm running 76.2g in Nosler/Federal and 77.2 in Winchester behind the 208's. This *is* a slightly conservative load, but a full grain behind a 10g heavier bullet makes me ask the question.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: AlcoholicusRex</div><div class="ubbcode-body">Just picked up a Savage 112BVSSf, a limited production .300WM varmint rifle, online for a grand total of $675.00 after fees. Worked up to 78gr H1000 with 220SMK and achieved 1/2moa performance at 2840fps. Primers looked good, still rounded, no cratering, but I noticed that the bolt took slightly more effort to open than usual. Is that a sign of excessive pressure? Does it fall into the category of sticky bolt lift? </div></div>
How many firings on your brass? I ran into this with some Federal brass after rebarreling. I full length sized the brass (IIRC, they had 7-8 firings already... a lot) to fit the new chamber but was getting sticky bolt lift during load development at loads that should have been nominal.
Long story, short... I was getting incipient head separation.
Some rounds were showing the faintest line above the web (a little above the belt).
Went to new brass and those loads work fine. Check your brass on the inside with a bent paper clip. If you feel a notch just above the web, toss 'em.
John
ETA: 78g *might* be a little stout, depending on what brass you use. I'm running 76.2g in Nosler/Federal and 77.2 in Winchester behind the 208's. This *is* a slightly conservative load, but a full grain behind a 10g heavier bullet makes me ask the question.
