Imr 4198 vs h4198

I'm new to this game, but a couple years ago when I put my rifle together I tried I4198 and could not get it to light off. I have a .50 and had to use harvester red crush ribs to tight enough fit to light em. I will continue to use 5744 until I run out. I did try a duplex load with 4198 that worked and gave about 400fps increase over 5744.

If you want, duplex with your 5744, close to 1:1. You’ll get ignition and a slight increase in velocity over straight IMR 4198, especially if the IMR 4198 doesn’t ignite.

I have shot them both with the same charge weight at 200 yards and they were all in the same group. No difference in the point of impact at that distance. Longer range, Maybe?

No! My post must have been made when I had read deeply into what wasn’t asked. I frequently am asked about using the 3 primary duplex primer powders and how much to vary if they had been using one, such as 4759 and now can’t get it, and will be using one of the other two. But, that wasn’t your question. 
So, the correct answer is - 10g 5744 under 34.5g of IMR 4198. That may give you up to 100’/sec velocity increase, somewhat less temp sensitivity, a lot surer ignition and likely, slightly better accuracy. 

Your load seems to be on the low side to begin with, and though unconventional that true 1:1 ratio you mentioned would likely be even better yet. A better load yet may be 10/45 5744/4198? 
I did not use 4198 in my stock 10ML2s. Hopefully, you’ll get better answers, or at least, more answers from others. 

“Have since went to 45 cal barrels and different animals now.”

From ‘99-‘01, I shot many 1,000s of 50 cal shots, testing accuracy, temp sensitivity, etc with loads that Savage wanted and loads Savage wanted tested - 1 was disasterous.

However, In ‘01 and then in ‘02 got a 40 PN followed by 4 45 PNs respectively, and never shot a 50 cal again. Actually, if a person experienced a 45 and especially a 40, why would they ever go back? So, for many of us, the extra recoil, the larger projectile, the poorer trajectory, etc just makes the 50 cal comparatively obsolete. However, as an adjunct to a v/c bow and centerfire seasons, a 50 cal is highly adequate. For where some of us live where there is no centerfire and for those of us who our smokeless MLer IS our rifle, short, med, & long range, the 45 and for some of us , the 40 has reduced recoil and improved trajectory advantages.

All that to say, many of us likely have to go way back to remember a # of our 50 cal loads.

I’m glad that we can’t use CFs in this area of Arkansas. Too populated and you should jusr see some of the “hunters”. Yes, CFs can be used for varmints; but the # of varmint hunters using higher than 22 cal is very low as are varmint hunters in general.

Arkansas MLing rules. 40 cal and above for deer/bear, 40 cal and below for all other hunting except water fowl, game birds and coon hunting at night.

Now, is that not 40 cal friendly?!!😊

The clays, like other very fast powders, will erode the vent liner or bushing. Suggestion: consider one of the book loads or VV120 60g or less.

It wasn’t a savage but I’ve shot my cast 405gr .458 bullet in a harvester and mmp orange sabot with 50gr of imr4198 and it shot really well.