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300 win mag
Is it possible to reload 300 win mag light enough to compare to a 30-06 or a 308 (a deer round) without going as light as the managed recoil rounds?
What kind of powder would you use and how much? |
RE: 300 win mag
Look in your load manual and start with the lightest bullets and powder charge and work up till you get what you want. CJ
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RE: 300 win mag
Get published reloading data for 150-168gr bullets and start near minimum loads. This will get you what you want. Choose a tough or bonded bullet, impact velocity could be pretty high (no Ballistic Tips).
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RE: 300 win mag
This only works with the lighter bullets in that caliber. Hodgdon has youth loads, using H4895. You take any load where H4895 is listed, and multiply the max charge by 0.6. That is as low as you can go. This will be much lower than you want to go, but you can use any charge in between.
Checking their site, they have data for h4895 up to a 168 gr. bullet. For more info, see the youth loads on the Hodgdon site. http://www.hodgdon.com/PDF/Youth%20Loads.pdf |
RE: 300 win mag
My experience in loading for the 300win mag is that they like near to or max loads, Ive tried light loads and cant come up with anything that is near consistant or accurate. If recoil is the culprit, you canadd weight and a good recoil pad to minimize the felt recoil.
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RE: 300 win mag
Thank you everyone. I looked in an "old" reloading manual and found a load which may work. The load is as follows:
Bullet : .308" dia, .225 sec. den., .423 ballistic coef., and weighs 150 Gr. Powder : 760 powder 64.0 to 68.0 grains (bullet speed muzzle:2732-2973) Primer: CCI 250 I calculated the bullet muzzle energy for this load and it is around 2610 ft-lb. The 180 grain 30-06 had around 2500 ft-pound (both muzzle energy). Some 300 win mags show 3100-3300 ft lb with 180 grain bullets. Would comparable muzzle energys translate to comparable felt recoil? Would this be a good deer load? (It seems like it to me and it is not too fast so expansion should be ok) |
RE: 300 win mag
I can understand doing this for getting someone accustomed to the recoil, maybe a bit of practice or possibly to reduced damage to meat. But if you plan to do this often why not just buy a .308 and be done with it. Sell off the big gun.
Yes it can be loaded down, no you will have to get your loading info from a published source. ??? |
RE: 300 win mag
ORIGINAL: jkrajcovic Thank you everyone. I looked in an "old" reloading manual and found a load which may work. The load is as follows: Bullet : .308" dia, .225 sec. den., .423 ballistic coef., and weighs 150 Gr. Powder : 760 powder 64.0 to 68.0 grains (bullet speed muzzle:2732-2973) Primer: CCI 250 I calculated the bullet muzzle energy for this load and it is around 2610 ft-lb. The 180 grain 30-06 had around 2500 ft-pound (both muzzle energy). Some 300 win mags show 3100-3300 ft lb with 180 grain bullets. Would comparable muzzle energys translate to comparable felt recoil? Would this be a good deer load? (It seems like it to me and it is not too fast so expansion should be ok) I calculate a full house 300 win mag load at about 30 ft lbs recoil energy for a 8.5 pound gun using 180 grain bullets. Your load listed above is 17-21 ft/lbs which is comparable to a .30-06. This is sort of a guess, as the gas velocity is unknown. Hodgdon used 4700 fps, I use 1.5 times muzzle velocity. |
RE: 300 win mag
skb, thanks for the advice. The load is from a Speer reloading manual and is one of their standard loads the powder is 760 not H760 there is a difference. I do plan on using the rifle for Elk which is why I like the 300. When elk hunting I will use the typical elk loads. I just don't want to kill my shoulder if not necessary or ruin more meat than necessary. Does that sound like a bad load? 68 grains of the 760 powder is max load. Has anyone used the 760 powder with a 150 gr bullet?
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RE: 300 win mag
Would comparable muzzle energys translate to comparable felt recoil? DM |
RE: 300 win mag
ORIGINAL: jkrajcovic Is it possible to reload 300 win mag light enough to compare to a 30-06 or a 308 (a deer round) without going as light as the managed recoil rounds? What kind of powder would you use and how much? |
RE: 300 win mag
ORIGINAL: Ridge Runner ORIGINAL: Brush hunter ORIGINAL: jkrajcovic Is it possible to reload 300 win mag light enough to compare to a 30-06 or a 308 (a deer round) without going as light as the managed recoil rounds? What kind of powder would you use and how much? 1) about the same costs 2) it is irreversable 3) you lose barrel length, so in turn your velocity drops 4) much louder than a brake, maybe not so much as loudness as its the sharp ear piercing crack that is almost unbearable, I know wear hearing protection, but I just don't feel right wearing ear plugs in the field when I'm lookin and listening for telltale signs of game. RR |
RE: 300 win mag
I guess I'm old and hard headed, so You'll need to school me
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RE: 300 win mag
Here is a link to a recoil calculator. It works pretty well.
If you are trying to prevent to much meat damage I would suggest using a premimum bonded bullet in a heavier weight. It is less likely to violently expand on a thinner skinned animal such as a deer. The expansion will be more controled and you will see less damage even if bone is hit. Large for caliber bullets also work well at moderate velocities and don't require being bonded. The Sierra Game King for example. |
RE: 300 win mag
ORIGINAL: Ridge Runner ok, when they cut the magnaport slots in a say 26" barrel, the ports take up approx. 2" of barrel, the barrel length stays the same but the gasses exit at 24" so your actualy only shooting 24" barrel velocities. when you put a brake on it you add the brake to the existing barrel length, so you don't lose velocity is this not correct? I've shot magnaporting, boss, vais, and QD Holland brakes, they're all loud, but the magnaporting hurts my ears worst of all, followed by the boss, the vais and the holland brakes in that order. I shoot alot of long range targets, and shoot deer at extreme range where seeing the bullet impact through the scope is imperative, I'll take the holland brake every time, more and bigger holes for the gas to escape more of a big boom than the sharp ear piercing crack of the magnaporting and the brakes with various small round holes in them. RR We checked noise levels with a decible meter, the question came up about noise. fact is they all make the firearm louder. All we had at the time were 3 Winchester model 70's. The first one with no brake...161 DB, the second with mag-na-port...163 DB, the third was a boss 167 DB. We did not have a vais or a QD Holland. |
RE: 300 win mag
ORIGINAL: Brush hunter ORIGINAL: Ridge Runner ok, when they cut the magnaport slots in a say 26" barrel, the ports take up approx. 2" of barrel, the barrel length stays the same but the gasses exit at 24" so your actualy only shooting 24" barrel velocities. when you put a brake on it you add the brake to the existing barrel length, so you don't lose velocity is this not correct? I've shot magnaporting, boss, vais, and QD Holland brakes, they're all loud, but the magnaporting hurts my ears worst of all, followed by the boss, the vais and the holland brakes in that order. I shoot alot of long range targets, and shoot deer at extreme range where seeing the bullet impact through the scope is imperative, I'll take the holland brake every time, more and bigger holes for the gas to escape more of a big boom than the sharp ear piercing crack of the magnaporting and the brakes with various small round holes in them. RR We checked noise levels with a decible meter, the question came up about noise. fact is they all make the firearm louder. All we had at the time were 3 Winchester model 70's. The first one with no brake...161 DB, the second with mag-na-port...163 DB, the third was a boss 167 DB. We did not have a vais or a QD Holland. Take a barrel and shoot it over a chrono, then manga port it and shoot it over the chrono again. I'd bet my house on the results. |
RE: 300 win mag
ORIGINAL: spaniel ORIGINAL: Brush hunter ORIGINAL: Ridge Runner ok, when they cut the magnaport slots in a say 26" barrel, the ports take up approx. 2" of barrel, the barrel length stays the same but the gasses exit at 24" so your actualy only shooting 24" barrel velocities. when you put a brake on it you add the brake to the existing barrel length, so you don't lose velocity is this not correct? I've shot magnaporting, boss, vais, and QD Holland brakes, they're all loud, but the magnaporting hurts my ears worst of all, followed by the boss, the vais and the holland brakes in that order. I shoot alot of long range targets, and shoot deer at extreme range where seeing the bullet impact through the scope is imperative, I'll take the holland brake every time, more and bigger holes for the gas to escape more of a big boom than the sharp ear piercing crack of the magnaporting and the brakes with various small round holes in them. RR We checked noise levels with a decible meter, the question came up about noise. fact is they all make the firearm louder. All we had at the time were 3 Winchester model 70's. The first one with no brake...161 DB, the second with mag-na-port...163 DB, the third was a boss 167 DB. We did not have a vais or a QD Holland. Take a barrel and shoot it over a chrono, then manga port it and shoot it over the chrono again. I'd bet my house on the results. |
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